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<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2022"><meta name="DC.rights.owner" content="(C) Copyright 2022"><meta name="DC.type" content="topic"><meta name="prodname" content="All units"><meta name="version" content="DGW 4849.50.27182809"><meta name="platform" content=""><meta name="DC.date.modified" content="2022-0511-0410"><meta name="DC.date.issued" content="2022-0511-0410"><meta name="DC.date.available" content="2022-0511-0410"><meta name="ChapterNumbering" content="no"><meta name="DC.format" content="HTML5"><meta name="DC.identifier" content="topic_title_Basic_Fax_Concepts_d1e14"><link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet"><link rel="stylesheet" type="text/css" href="https://documentation.media5corp.com/download/attachments/62825785/commonltr.css"><link rel="stylesheet" type="text/css" href="https://documentation.media5corp.com/download/attachments/62825785/custom.css"><title>Codec Configuration</title></head><body class="nobody"><header role="banner"><div class="topicmeta title">Codec Configuration</div><div class="topicmeta date">2022-0511-04<10</div><div class="topicmeta product">All units</div><div class="topicmeta version">DGW 4849.50.2718<2809</div><div class="topicmeta pdf"><a href="https://documentation.media5corp.com/download/attachments/62825785/Codec%20Configuration.pdf" rel="nofollow">Download PDF Document</a></div><hr><span style="float: inline-end;"></span></header><nav role="toc"><ul><li><a href="#topic_title_Basic_Fax_Concepts_d1e14">Basic Fax Concepts</a><ul><li><a href="#c_codecconfiguration">T.38 Fax</a></li><li><a href="#unique_788006364150143975">Fax Parameters</a></li><li><a href="#reference_mcd_ysk_zt">Fax Information Required for Troubleshooting</a></li><li><a href="#reference_hdg_kfk_zt">T.38 Fax Transmission</a></li><li><a href="#reference_nxc_hkk_zt">Fax Transmission through a Firewall</a></li><li><a href="#reference_ewm_ygk_zt">Clear Channel Fax Transmission</a></li><li><a href="#reference_fsr_zy5_sbb">Clear Channel Fax Flow</a></li><li><a href="#reference_gh3_pcm_zt">FAX Detection Flow</a></li><li><a href="#task_kmc_3pb_nt">Configuring the Behavior of the T.38 INVITE Not Accepted</a></li><li><a href="#task_g5h_zmt_lt">Allowing Unsecure T.38 with Secure RTP</a></li></ul></li><li><a href="#topic_title_Basic_Fax_Tasks_d1e25">Basic Fax Tasks</a><ul><li><a href="#task_w2w_wfm_zt">Enabling T.38 Fax Transmission</a></li><li><a href="#task_yss_jnk_zt">Setting the Redundancy Level</a></li><li><a href="#task_ehr_tkt_lt">Configuring the T.38 No Signal</a></li><li><a href="#unique_1734048244821061362">Configuring the T.38 No Signal Timeout</a></li><li><a href="#task_zsp_1rk_zt">Configuring the Clear Channel Fax Transmission</a></li><li><a href="#task_wr1_pvb_nt">Selecting the Base Port for T.38 Fax Calls</a></li></ul></li><li><a href="#topic_title_Basic_Codec_Concepts_d1e32">Basic Codec Concepts</a><ul><li><a href="#concept_r5n_1cn_qbb">Default vs Specific Endpoint Configuration</a></li><li><a href="#unique_1659401702231923589">Codec Configuration</a></li><li><a href="#c_codecvsbearercapabilities">Codec Vs Bearer Capabilities</a></li><li><a href="#unique_1536185111540568701">Generic Voice Activity Detection (VAD)</a></li><li><a href="#reference_hmg_11v_sbb">Data Codec Selection Procedure Flow</a></li></ul></li><li><a href="#topic_title_Basic_Codec_Tasks_d1e38">Basic Codec Tasks</a><ul><li><a href="#task_s1h_jzf_4s">Enabling Default Codecs</a></li><li><a href="#unique_1085731397310015140">Enabling Codecs For Specific Endpoints</a></li><li><a href="#t_configurebearercapabilities">Configuring Codec Vs. Bearer Capabilities Mapping</a></li><li><a href="#unique_103130020159695235">Configuring Generic Voice Activity Detection (VAD)</a></li><li><a href="#unique_20272292261136201445">Configuring Generic Voice Activity Detection (VAD) For Specific Endpoint</a></li></ul></li><li><a href="#topic_title_Advanced_Parameters_d1e44">Advanced Parameters</a><ul><li><a href="#unique_10161037021977626787">Configuring Codec Advanced Parameters</a></li></ul></li><li><a href="#reference_zx2_yck_wbb">Mipt Default vs Specific Endpoint Configuration Examples</a></li><li><a href="#reference_j4g_nbv_gfb">Online Help</a></li><li><a href="#concept_v4k_q3h_1r">DGW Documentation</a></li><li><a href="#concept_fqm_rv4_k4">Copyright Notice</a></li></ul></nav><main role="main"><article role="article" aria-labelledby="ariaid-title1"><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="nested0" aria-labelledby="ariaid-title1" id="topic_title_Basic_Fax_Concepts_d1e14">
<h1 class="title topictitle1" id="ariaid-title1">Basic Fax Concepts</h1>
<article class="topic concept nested1" aria-labelledby="ariaid-title2" id="c_codecconfiguration">
<h2 class="title topictitle2" id="ariaid-title2">T.38 Fax</h2>
<div class="body conbody"><p class="shortdesc">The Mediatrix unit can send faxes in T.38 mode over UDP. T.38 is used for fax if both
units are T.38 capable; otherwise, transmission in clear channel over G.711 as defined is used
(if G.711 μ-law and/or G.711 A-law are enabled). If no clear channel codecs are enabled and the
other endpoint is not T.38 capable, the fax transmission fails.</p>
<br><img class="image" id="c_codecconfiguration__image_ggc_2lt_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/T38FaxFlow.PNG" width="600"><br>
<div class="note note note_note"><span class="note__title">Note:</span> The Mediatrix unit opens the T.38 channel only after receiving the “200 OK” message from
the peer.</div>
<div class="note note note_note"><span class="note__title">Note:</span> Media5 recommends not to use a fax that does not send a CNG tone. If using such a fax to
send a fax communication to the public network, this might result in a communication
failure.</div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested1" aria-labelledby="ariaid-title3" id="unique_788006364150143975">
<h2 class="title topictitle2" id="ariaid-title3">Fax Parameters</h2>
<div class="body conbody"><p class="shortdesc">The Mediatrix unit handles G3 fax transmissions at speeds up to 14.4 kbps. Automatic fax
mode detection is standard on all endpoints. Real-Time Fax Over UDP with the T.38 protocol stack
is also available.</p>
<div class="p">A fax call works much like a regular voice call, with the following differences:<ul class="ul" id="unique_788006364150143975__ul_qry_ny5_sbb">
<li class="li">The fax codec may be re-negotiated by using a reINVITE.</li>
<li class="li">The goal of the reINVITE is to allow both user agents to agree on a fax codec, which is
either:<ul class="ul" id="unique_788006364150143975__ul_m35_5y5_sbb">
<li class="li">Clear channel (G.711 or G.726) without Echo Cancellation nor Silence Suppression
(automatically disabled).</li>
<li class="li">T.38.</li>
</ul></li>
<li class="li">Upon fax termination, if the call is not BYE, the previous voice codec is recovered with
another reINVITE.</li>
</ul><ul class="ul" id="unique_788006364150143975__ul_ypd_nlh_vbb">
<li class="li">For fax speeds higher than 14.4 kbps, the Clear channel codec is recommended.</li>
</ul></div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title4" id="reference_mcd_ysk_zt">
<h2 class="title topictitle2" id="ariaid-title4">Fax Information Required for Troubleshooting</h2>
<div class="body refbody">
<table class="table frame-all" id="reference_mcd_ysk_zt__table_s3k_zsk_zt"><caption></caption><colgroup><col style="width:33.33333333333333%"><col style="width:33.33333333333333%"><col style="width:33.33333333333333%"></colgroup><thead class="thead">
<tr class="row">
<th class="entry colsep-1 rowsep-1" id="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Information</th>
<th class="entry colsep-1 rowsep-1" id="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="2">Type</th>
</tr>
</thead><tbody class="tbody">
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Fax Transmission Protocol </td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Clear Mode</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">T.38</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Fax Transmission Speed </td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">High speed</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Low speed</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Fax mode</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Automatic</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Manual</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Receiving fax </td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Model</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Make </td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Sending fax </td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Model</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Make</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Fax mode </td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">ECM</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">non- ECM</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1">Firewall</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">Yes</td>
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2">No</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__1 reference_mcd_ysk_zt__table_s3k_zsk_zt__entry__2" colspan="3"></td>
</tr>
</tbody></table>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title5" id="reference_hdg_kfk_zt">
<h2 class="title topictitle2" id="ariaid-title5">T.38 Fax Transmission</h2>
<div class="body refbody"><p class="shortdesc">T.38 is an ITU recommendation for allowing transmission of fax over IP networks in real
time. </p>
<section class="section"><h3 class="title sectiontitle">PROs</h3>
</section>
<section class="section">
<ul class="ul" id="reference_hdg_kfk_zt__ul_kpc_tgk_zt">
<li class="li">Allows for redundancy, therefore increases the reliability of the transmissions.</li>
<li class="li">Faxes in T.38 are not as sensitive to network imperfection like packet loss or jitter as
faxes in Clear Channel. </li>
</ul>
</section>
<section class="section"><h3 class="title sectiontitle">CONs</h3>
</section>
<section class="section">
<ul class="ul" id="reference_hdg_kfk_zt__ul_gk5_5gk_zt">
<li class="li">The number of redundancy packets will increase the bandwidth used</li>
<li class="li">The higher the speed, the more bandwidth is used.</li>
<li class="li">May take more bandwidth than a fax in Clear channel. </li>
</ul>
</section>
<section class="section"><h3 class="title sectiontitle">Requirements </h3>
</section>
<section class="section">
<ul class="ul" id="reference_hdg_kfk_zt__ul_zm1_pvl_zt">
<li class="li">The Mediatrix must be able to detect a CNG , v21 preamble or T.38 packet to switch to
T.38 </li>
<li class="li">Reasonable delay, 1 second round trip is acceptable however 2 seconds could cause
timeout or collision </li>
</ul>
</section>
<section class="section"><h3 class="title sectiontitle">Configuration </h3>
</section>
<section class="section">
<ul class="ul" id="reference_hdg_kfk_zt__ul_l3c_3nk_zt">
<li class="li"><a class="xref" href="#task_w2w_wfm_zt">Enabling T.38 Fax Transmission</a></li>
<li class="li"><a class="xref" href="#task_yss_jnk_zt">Setting the Redundancy Level</a>
</li>
<li class="li"><a class="xref" href="#task_g5h_zmt_lt">Allowing Unsecure T.38 with Secure RTP</a></li>
<li class="li"><a class="xref" href="#task_wr1_pvb_nt">Selecting the Base Port for T.38 Fax Calls</a></li>
<li class="li"><a class="xref" href="Source/Sip/t_ConfiguringtheBehavioroftheT38InviteNotaccpeted.html#task_kmc_3pb_nt" title="This task allows you to set the unit’s behaviour after receiving an error to a SIP INVITE for T.38 fax.">Configuring the Behavior of the T.38 INVITE Not Accepted</a></li>
</ul>
</section>
<section class="section">Call Flow <br><img class="image" id="reference_hdg_kfk_zt__image_r2v_2kk_zt" src="https://documentation.media5corp.com/download/attachments/62825785/T38FaxCallFlow.png" width="500"><br></section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title6" id="reference_nxc_hkk_zt">
<h2 class="title topictitle2" id="ariaid-title6">Fax Transmission through a Firewall</h2>
<div class="body refbody"><p class="shortdesc">Using T.38 with a Firewall</p>
<section class="section"><h3 class="title sectiontitle">Requirements</h3>
</section>
<section class="section">
<ul class="ul" id="reference_nxc_hkk_zt__ul_hv4_4kk_zt">
<li class="li">The communication channel must remain open for a fax to go through a firewall i.e. the
unit sends "no signal" packets to fill the dead air intervals that could occur during a
fax transmission and cause the closure of the firewall. </li>
</ul>
</section>
<section class="section"><h3 class="title sectiontitle">Configuration </h3>
</section>
<section class="section">
<ul class="ul" id="reference_nxc_hkk_zt__ul_ozk_bpk_zt">
<li class="li"><a class="xref" href="#task_ehr_tkt_lt">Configuring the T.38 No Signal</a></li>
</ul>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title7" id="reference_ewm_ygk_zt">
<h2 class="title topictitle2" id="ariaid-title7">Clear Channel Fax Transmission</h2>
<div class="body refbody"><p class="shortdesc">Modulated Fax information from the PSTN is passed in-band end-to-end over a voice
speech path in a IP network. </p>
<section class="section">There are 2 pass-through techniques.<ul class="ul" id="reference_ewm_ygk_zt__ul_rl1_v3k_zt">
<li class="li">The configured voice codec is used for fax transmission. This technique works only when
the configured codec is G711 with no VAD and no echo cancellation (EC) or when the
configured codec is a clear channel codec or G.726/32. Low bit-rate codecs cannot be used
for fax transmission.</li>
<li class="li">Gateway dynamically changes the codec from the codec configured for voice to G.711 with
no VAD and no EC for the duration of the fax session. This method is referred to as "codec
up speed" or "fax pass-through with up speed".</li>
</ul></section>
<section class="section"><h3 class="title sectiontitle">PROs</h3>
</section>
<section class="section">
<ul class="ul" id="reference_ewm_ygk_zt__ul_kpc_tgk_zt">
<li class="li">Less intrusive, does not modify the packets</li>
<li class="li">Does not allows for redundancy</li>
<li class="li">Takes less bandwidth than a T.38 fax transmission</li>
<li class="li">The bandwidth usage is practically constant. </li>
<li class="li">Bandwidth only affected by the P-Time. </li>
</ul>
</section>
<section class="section"><h3 class="title sectiontitle">CONs</h3>
</section>
<section class="section">
<ul class="ul" id="reference_ewm_ygk_zt__ul_gk5_5gk_zt">
<li class="li">Sensitive to network imperfection like packet loss or jitter</li>
</ul>
</section>
<section class="section"><h3 class="title sectiontitle">Configuration</h3>
</section>
<section class="section"><a class="xref" href="#task_zsp_1rk_zt">Configuring the Clear Channel Fax Transmission</a></section>
<section class="section">Call Flow <br><img class="image" id="reference_ewm_ygk_zt__image_sp5_fkk_zt" src="https://documentation.media5corp.com/download/attachments/62825785/ClearModeFaxCallFlow.png" width="800"><br></section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title8" id="reference_fsr_zy5_sbb">
<h2 class="title topictitle2" id="ariaid-title8">Clear Channel Fax Flow</h2>
<div class="body refbody">
<section class="section">For more details on Clear Channel Fax limitations, please refer to the <a class="xref" href="https://documentation.media5corp.com/display/DGWLATEST/DGW+Platform-Specific+Characteristics" target="_blank"> DGW Configuration Guide - Limitations of DGW
Platforms</a> published on the <a class="xref" href="https://documentation.media5corp.com/" target="_blank">Media5 Documentation Portal</a>.</section>
<section class="section"> <br><img class="image" id="reference_fsr_zy5_sbb__image_wjm_cjt_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/ClearChannelFaxFlow.PNG" width="600"><br></section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title9" id="reference_gh3_pcm_zt">
<h2 class="title topictitle2" id="ariaid-title9">FAX Detection Flow</h2>
<div class="body refbody">
<table class="table frame-all" id="reference_gh3_pcm_zt__table_t3c_qcm_zt"><caption></caption><colgroup><col style="width:33.33333333333333%"><col style="width:33.33333333333333%"><col style="width:33.33333333333333%"></colgroup><thead class="thead">
<tr class="row">
<th class="entry colsep-1 rowsep-1" id="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__1">IF </th>
<th class="entry colsep-1 rowsep-1" id="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__2">AND</th>
<th class="entry colsep-1 rowsep-1" id="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__3">THEN </th>
</tr>
</thead><tbody class="tbody">
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__1">If T.38 is enabled </td>
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__2">
<ul class="ul" id="reference_gh3_pcm_zt__ul_skv_tcm_zt">
<li class="li">A CNG tone is detected, or</li>
<li class="li">A V.21 preamble is detected, or</li>
<li class="li"> T.38 packets are received on the IP side</li>
</ul>
</td>
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__3">Then the Mediatrix switches to T.38</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__1">
<ul class="ul" id="reference_gh3_pcm_zt__ul_bsb_xcm_zt">
<li class="li">If a CED tone is detected (Answer Tone or ANS) and no other conditions indicates
that a fax is present, or </li>
<li class="li">If a fax is detected but T.38 is deactivated </li>
</ul>
</td>
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__2"></td>
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__3">Then the Mediatrix unit switches to Clear mode.</td>
</tr>
<tr class="row">
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__1">If a CED <div class="note note note_note"><span class="note__title">Note:</span> Note that the CED tone can be detected on both the IP side (egress
side) or on the analog side (ingress side). is detected before a CNG</div></td>
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__2"></td>
<td class="entry colsep-1 rowsep-1" headers="reference_gh3_pcm_zt__table_t3c_qcm_zt__entry__3">The Mediatrix unit will first switch to Clear Channel and if T.38 is enabled, it
will then switch to T.38. </td>
</tr>
</tbody></table>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title10" id="task_kmc_3pb_nt">
<h2 class="title topictitle2" id="ariaid-title10">Configuring the Behavior of the T.38 INVITE Not Accepted</h2>
<div class="body taskbody"><p class="shortdesc">This task allows you to set the unit’s behaviour after receiving an error to a SIP
INVITE for T.38 fax. </p>
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step">
<span class="ph cmd">Go to <span class="keyword wintitle">SIP</span>/<span class="keyword wintitle">Interop</span>. </span>
</li><li class="li step">
<span class="ph cmd">In the <span class="keyword wintitle">Behavior on T.38 INVITE Not
Accepted</span> table, from the <span class="keyword wintitle">Behavior</span> selection list, set
the required behavior for each <span class="keyword wintitle">SIP Error Code</span>.</span>
</li><li class="li step">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_kmc_3pb_nt__image_jkg_qqp_hz" src="https://documentation.media5corp.com/download/attachments/62825785/BehavioronT38InviteNotAccepted.png" width="800"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title11" id="task_g5h_zmt_lt">
<h2 class="title topictitle2" id="ariaid-title11">Allowing Unsecure T.38 with Secure RTP</h2>
<div class="body taskbody">
<section class="section context"><div class="tasklabel"><strong class="sectiontitle tasklabel">Context</strong></div><p class="p">The T.38 protocol must be enabled under <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codec</span>.</p>This procedure is
required only if SRTP is used and is available provided the <span class="keyword wintitle">Select Endpoint</span> selection list is set
to <span class="keyword wintitle">Default</span>.</section>
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Security</span>.</span>
</li><li class="li step">
<span class="ph cmd">In the <span class="keyword wintitle">Security</span>
table, under the <span class="keyword wintitle">RTP</span>
section, set the <span class="keyword wintitle">Mode</span>
selection list to <span class="keyword wintitle">Secure with fallback</span>.</span>
</li><li class="li step">
<span class="ph cmd"> Under the <span class="ph uicontrol">T.38</span>
section, set the <span class="keyword wintitle">Allow Unsecure T.38 with Secure RTP</span> selection list to <span class="keyword wintitle">Yes</span>. </span>
</li><li class="li step">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_g5h_zmt_lt__image_egd_pmy_lt" src="https://documentation.media5corp.com/download/attachments/62825785/UnsecuredT38.png"><br>
</section>
</div>
</article></article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic nested0 nobody" aria-labelledby="ariaid-title12" id="topic_title_Basic_Fax_Tasks_d1e25">
<h1 class="title topictitle1" id="ariaid-title12">Basic Fax Tasks</h1>
<article class="topic task nested1" aria-labelledby="ariaid-title13" id="task_w2w_wfm_zt">
<h2 class="title topictitle2" id="ariaid-title13">Enabling T.38 Fax Transmission</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step">
<span class="ph cmd"> Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>. </span>
</li><li class="li step">
<span class="ph cmd">In the <span class="keyword wintitle">Codec</span> section,
click <img class="image" id="task_w2w_wfm_zt__image_avg_m4k_zt" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="14"> located on the same line as <span class="ph uicontrol">T.38</span>.</span>
</li><li class="li step">
<span class="ph cmd">Set the <span class="keyword wintitle">Enable</span> filed
to <span class="keyword wintitle">Enable</span>. </span>
</li><li class="li step">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_w2w_wfm_zt__image_djv_kgm_zt" src="https://documentation.media5corp.com/download/attachments/62825785/T38.png" width="800"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title14" id="task_yss_jnk_zt">
<h2 class="title topictitle2" id="ariaid-title14">Setting the Redundancy Level</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd"> Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>. </span>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="keyword wintitle">Codec</span> section,
click <img class="image" id="task_yss_jnk_zt__image_avg_m4k_zt" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="14"> located on the same line as <span class="ph uicontrol">T.38</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="ph uicontrol">T.38</span> table,
set the <span class="ph uicontrol">Redundancy Level </span>.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> Using redundancy increases transmission reliability, however the number of
redundancy packets will also increase the bandwidth being used.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Set the <span class="keyword wintitle">Frame Redundancy Level</span>. </span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> The repetition of the final frame will help prevent losing the end of a
message, v.21 or end of page message. Losing the end of packet message can
create a major problem in the transmission since the Redundancy is not use
in this situation.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_yss_jnk_zt__image_itp_mxl_zt" src="https://documentation.media5corp.com/download/attachments/62825785/T38.png" width="800"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title15" id="task_ehr_tkt_lt">
<h2 class="title topictitle2" id="ariaid-title15">Configuring the T.38 No Signal</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <img class="image" id="task_ehr_tkt_lt__image_nkd_klt_lt" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="14"> located on the same row as <span class="ph uicontrol">T.38</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Set the <span class="keyword wintitle">No Signal</span>
selection list to <span class="keyword wintitle">Enable</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Set the <span class="keyword wintitle">No Signal Timeout</span> selection list to <span class="keyword wintitle">Enable</span>.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> In order to keep RTP ports opened for T.38 packets, the unit will send 'no
signal' packets to fill the dead air intervals that could occur during a fax
transmission and cause the closure of the firewall.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_ehr_tkt_lt__image_fwk_1ny_lt" src="https://documentation.media5corp.com/download/attachments/62825785/T38.png" width="600"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title16" id="unique_1734048244821061362">
<h2 class="title topictitle2" id="ariaid-title16">Configuring the T.38 No Signal Timeout</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <img class="image" id="unique_1734048244821061362__image_nkd_klt_lt" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="14"> located on the same row as <span class="ph uicontrol">T.38</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Set the <span class="keyword wintitle">No Signal Timeout</span> selection list to <span class="keyword wintitle">Enable</span>.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> In order to keep RTP ports opened for T.38 packets, the unit will send 'no
signal' packets to fill the dead air intervals that could occur during a fax
transmission and cause the closure of the firewall.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="unique_1734048244821061362__image_fwk_1ny_lt" src="https://documentation.media5corp.com/download/attachments/62825785/T38.png" width="800"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title17" id="task_zsp_1rk_zt">
<h2 class="title topictitle2" id="ariaid-title17">Configuring the Clear Channel Fax Transmission</h2>
<div class="body taskbody">
<section id="task_zsp_1rk_zt__steps_ag5_drk_zt"><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps" id="task_zsp_1rk_zt__steps_ag5_drk_zt"><li class="li step">
<span class="ph cmd"> Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>. </span>
</li><li class="li step">
<span class="ph cmd">In the <span class="keyword wintitle">Codec</span> section,
click <img class="image" id="task_zsp_1rk_zt__image_wkp_hrk_zt" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg"> located
on the same line as the Codec you wish to use for Fax Transmission.</span>
</li><li class="li step">
<span class="ph cmd">In the selected Codec table, set the fields as required.</span>
</li><li class="li step">
<span class="ph cmd">Make sure to enable the <span class="keyword wintitle">Data Transmission</span>.</span>
</li><li class="li step">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>For example:<br><img class="image" id="task_zsp_1rk_zt__image_xvt_d1m_zt" src="https://documentation.media5corp.com/download/attachments/62825785/ClearMode.png" width="800"><br></section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title18" id="task_wr1_pvb_nt">
<h2 class="title topictitle2" id="ariaid-title18">Selecting the Base Port for T.38 Fax Calls</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Misc</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="keyword wintitle">Base Port</span>
table, enter the first port to be used for T.38 Fax calls in the <span class="ph uicontrol">T.38</span> field.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> If you do not know which port to use, refer to the <a class="xref" href="https://documentation.media5corp.com/display/DGWLATEST/Ports+and+Protocol+Settings" target="_blank">Technical Bulletin - Ports and Protocol
Settings</a> published on the <a class="xref" href="https://documentation.media5corp.com/" target="_blank">Media5 Documentation Portal</a>.
</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_wr1_pvb_nt__image_p2l_1bc_nt" src="https://documentation.media5corp.com/download/attachments/62825785/BasePorts.png" width="800"><br>
</section>
</div>
</article></article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic nested0 nobody" aria-labelledby="ariaid-title19" id="topic_title_Basic_Codec_Concepts_d1e32">
<h1 class="title topictitle1" id="ariaid-title19">Basic Codec Concepts</h1>
<article class="topic concept nested1" aria-labelledby="ariaid-title20" id="concept_r5n_1cn_qbb">
<h2 class="title topictitle2" id="ariaid-title20">Default vs Specific Endpoint Configuration</h2>
<div class="body conbody"><p class="shortdesc">It is possible to configure all endpoints to the default value, or an endpoint to a
specific value, or a mix of both.</p>
<div class="p">When you do not change your configuration, the values keep the default configuration. In order
to modify the codec settings for a specific endpoint, the endpoint must first be
selected from the drop-down list. It is also possible to have a default configuration
followed by one or more specific endpoint configurations.<ul class="ul" id="concept_r5n_1cn_qbb__ul_kjn_h2n_qbb">
<li class="li">Default configuration</li>
<li class="li">Mix of default and specific endpoint configurations</li>
<li class="li">All endpoints enabled with specific configurations</li>
</ul></div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested1" aria-labelledby="ariaid-title21" id="unique_1659401702231923589">
<h2 class="title topictitle2" id="ariaid-title21">Codec Configuration</h2>
<div class="body conbody"><p class="shortdesc">This document describes the steps required to enable or disable the codecs of the
Mediatrix unit, as well as access the codec-specific parameters.</p>
<div class="p">The Codec section allows setting two types of configurations:<ul class="ul" id="unique_1659401702231923589__ul_pxh_rx4_qbb">
<li class="li">Default configurations that apply to all endpoints of the Mediatrix unit.</li>
<li class="li">Specific configurations that override the default configurations. Specific
configurations can be set for each endpoint in the Mediatrix unit.</li>
</ul></div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested1" aria-labelledby="ariaid-title22" id="c_codecvsbearercapabilities">
<h2 class="title topictitle2" id="ariaid-title22">Codec Vs Bearer Capabilities</h2>
<div class="body conbody"><p class="shortdesc">The Codec Vs. Bearer Capabilities Mapping section allows you to select the codec to
prioritise or select in the outgoing INVITE when the incoming SETUP ITC (Information Transfer
Capability) matches the configured one. It is also possible to select the ITC value to set in the
outgoing SETUP bearer capabilities when the incoming INVITE codec matches the configured
one.</p>
<div class="p">
<div class="note note note_note"><span class="note__title">Note:</span> This section in only available for units with ISDN interfaces.</div>
</div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested1" aria-labelledby="ariaid-title23" id="unique_1536185111540568701">
<h2 class="title topictitle2" id="ariaid-title23">Generic Voice Activity Detection (VAD)</h2>
<div class="body conbody"><p class="shortdesc">VAD defines how the Mediatrix sends information pertaining to silence. This allows the
unit to detect when the user talks, thus avoiding to send silent RTP packets.</p>
<div class="p">The Generic Voice Activity Detection (VAD) section allows selecting two types of
configurations:<ul class="ul" id="unique_1536185111540568701__ul_pxh_rx4_qbb">
<li class="li">Default configurations that apply to all endpoints of the Mediatrix unit.</li>
<li class="li">Specific configurations that override the default configurations. Specific
configurations can be set for each endpoint in the Mediatrix unit.</li>
</ul></div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested1" aria-labelledby="ariaid-title24" id="reference_hmg_11v_sbb">
<h2 class="title topictitle2" id="ariaid-title24">Data Codec Selection Procedure Flow</h2>
<div class="body refbody"><p class="shortdesc">The Mediatrix unit follows a procedure when selecting data codec. This procedure is the
Mediatrix unit default behaviour. Some interop parameter may modify this procedure. Tones are
detected on the analog ports only.</p>
<section class="section"><br><img class="image" id="reference_hmg_11v_sbb__image_zcf_mkm_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/CodecSelectionProcedure.png" width="600"><br></section>
</div>
</article></article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic nested0 nobody" aria-labelledby="ariaid-title25" id="topic_title_Basic_Codec_Tasks_d1e38">
<h1 class="title topictitle1" id="ariaid-title25">Basic Codec Tasks</h1>
<article class="topic task nested1" aria-labelledby="ariaid-title26" id="task_s1h_jzf_4s">
<h2 class="title topictitle2" id="ariaid-title26">Enabling Default Codecs</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">From the <span class="keyword wintitle">Select Codec Bank</span>, choose if
you want the G.722 , the G.723.1, G.726 or G.729 codec.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> All Codec Banks include the T.38, the Clear Mode, the Clear Channel, and
the X-CCD codecs.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="keyword wintitle">Codec</span> table,
select the desired codecs and <span class="keyword wintitle">Enable</span> / <span class="keyword wintitle">Disable</span> them.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> Codecs that appear in Red are not part of the selected codec Bank, thus
they can be disabled without a problem.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <img class="image" id="task_s1h_jzf_4s__image_zxv_f4d_rbb" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="15"> for Advanced codec settings.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> When enabling two codecs or more, the priority order can be modified by
selecting the advanced options.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="task_s1h_jzf_4s__image_yf2_k1g_4s" src="https://documentation.media5corp.com/download/attachments/62825785/Codec_MediatrixGatewayLync2010.png" width="600"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title27" id="unique_1085731397310015140">
<h2 class="title topictitle2" id="ariaid-title27">Enabling Codecs For Specific Endpoints</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">From the <span class="keyword wintitle">Select Codec Bank</span>, choose if
you want the G.722 , the G.723.1, G.726 or G.729 codec.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> All Codec Banks include the T.38, the Clear Mode, the Clear Channel, and
the X-CCD codecs.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">From the <span class="keyword wintitle">Select Endpoint</span> drop-down list select the port you want to configure.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="keyword wintitle">Codec</span> table,
from the <span class="keyword wintitle">Endpoint Specific</span> drop-down
list, select <span class="keyword wintitle">Yes</span> for
the desired codecs and <span class="keyword wintitle">Enable</span>/<span class="keyword wintitle">Disable</span> them.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> When enabling two codecs or more, the priority order can be modified by
selecting the advanced options.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <img class="image" id="unique_1085731397310015140__image_zxv_f4d_rbb" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="15"> for Advanced codec options.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="unique_1085731397310015140__image_mhh_n53_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/CodecSpecificEndpoint.png" width="600"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title28" id="t_configurebearercapabilities">
<h2 class="title topictitle2" id="ariaid-title28">Configuring Codec Vs. Bearer Capabilities Mapping</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step">
<span class="ph cmd">In the <span class="keyword wintitle">Codecs vs. Bearer Capabilities
Mapping</span> table, select <span class="keyword wintitle">Enable</span> from the <span class="keyword wintitle">Enable</span>
drop-down list.</span>
</li><li class="li step">
<span class="ph cmd">For each enabled codec, complete the fields are required.</span>
</li><li class="li step">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="t_configurebearercapabilities__image_dmk_jtg_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/CodecvsBearerCapabilitiesmapping.png" width="800"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title29" id="unique_103130020159695235">
<h2 class="title topictitle2" id="ariaid-title29">Configuring Generic Voice Activity Detection (VAD)</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">From the <span class="keyword wintitle">Select Codec Bank</span>, choose if
you want the G.722 , the G.723.1, G.726 or G.729 codec.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> All Codec Banks include the T.38, the Clear Mode, the Clear Channel, and
the X-CCD codecs.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="keyword wintitle">Generic Voice Activity Detection (VAD)</span> table, </span>
</li><li class="li step stepexpand">
<span class="ph cmd">set <span class="keyword wintitle">Enable (G.711, G.722 and
G.726)</span> to the proper setting from the drop-down list.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="unique_103130020159695235__image_tns_553_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/GenericVoiceActivityDetection_Disable.png" width="800"><br>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title30" id="unique_20272292261136201445">
<h2 class="title topictitle2" id="ariaid-title30">Configuring Generic Voice Activity Detection (VAD) For Specific Endpoint</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step">
<span class="ph cmd">From the <span class="keyword wintitle">Select Endpoint</span> drop-down list select the port to configure.</span>
</li><li class="li step">
<span class="ph cmd">In the <span class="keyword wintitle">Generic Voice Activity Detection (VAD)</span> table, from the <span class="keyword wintitle">Endpoint Specific</span> drop-down
list, select <span class="keyword wintitle">Yes</span>.</span>
</li><li class="li step">
<span class="ph cmd">Enable the G.711 and G.726 Voice Activity Detection (VAD) by selecting the
proper setting in the drop-down list.</span>
</li><li class="li step">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>
<br><img class="image" id="unique_20272292261136201445__image_l3p_z53_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/GenericVoiceActivityDetectionSpecificEndpoint.png" width="800"><br>
</section>
</div>
</article></article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic nested0 nobody" aria-labelledby="ariaid-title31" id="topic_title_Advanced_Parameters_d1e44">
<h1 class="title topictitle1" id="ariaid-title31">Advanced Parameters</h1>
<article class="topic task nested1" aria-labelledby="ariaid-title32" id="unique_10161037021977626787">
<h2 class="title topictitle2" id="ariaid-title32">Configuring Codec Advanced Parameters</h2>
<div class="body taskbody">
<section><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps"><li class="li step stepexpand">
<span class="ph cmd">Go to <span class="keyword wintitle">Media</span>/<span class="keyword wintitle">Codecs</span>.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">From the <span class="keyword wintitle">Select Codec Bank</span>, choose if
you want the G.722, the G.723.1, G.726 or G.729 codec.</span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> All Codec Banks include the T.38, the Clear Mode, the Clear Channel, and
the X-CCD codecs.</div>
</div>
</li><li class="li step stepexpand">
<span class="ph cmd">In the <span class="keyword wintitle">Codec</span> table,
click <img class="image" id="unique_10161037021977626787__image_zxv_f4d_rbb" src="https://documentation.media5corp.com/download/attachments/62825785/pencilbleu.jpg" width="15"> next to the codec you wish to configure.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">From the <span class="keyword wintitle">Select Endpoint</span> drop-down list, select <span class="keyword wintitle">Default</span> to apply changes to
all endpoints or select the specific <span class="keyword wintitle">Endpoint</span> to apply changes to
the selected endpoint.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Complete the fields as required. </span>
</li><li class="li step stepexpand">
<span class="ph cmd">Click <span class="keyword wintitle">Apply</span>.</span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>This is an example for the G.729 Codec.<br><img class="image" id="unique_10161037021977626787__image_nhg_tfq_sbb" src="https://documentation.media5corp.com/download/attachments/62825785/G729.PNG" width="800"><br></section>
</div>
</article></article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested0" aria-labelledby="ariaid-title33" id="reference_zx2_yck_wbb">
<h1 class="title topictitle1" id="ariaid-title33">Mipt Default vs Specific Endpoint Configuration Examples</h1>
<div class="body refbody">
<section class="section">
<pre class="pre codeblock"><code>Global>Mipt.EpSpecificCodec
_____________________________________________________________
| EpId | EnableConfig | GenericVoiceActivityDetection |
|__________|_______________|__________________________________|
| FXO1 | Disable | Conservative |
| FXO2 | Disable | Conservative |
| FXO3 | Disable | Conservative |
| FXO4 | Disable | Conservative |
| FXS1 | Disable | Conservative |
| FXS2 | Disable | Conservative |
| FXS3 | Disable | Conservative |
| FXS4 | Disable | Conservative |
|__________|_______________|__________________________________|</code></pre>
<pre class="pre codeblock"><code>Global>Mipt.epSpecificCodecG711Mulaw
___________________________________________________________________
| EpId | EnableConfig | VoiceEnable | VoicePriority | DataEnable |
|________|_______________|_____________|_______________|____________|
| FXO1 | Disable | Enable | 0 | Enable |
| FXO2 | Disable | Enable | 0 | Enable |
| FXO3 | Disable | Enable | 0 | Enable |
| FXO4 | Disable | Enable | 0 | Enable |
| FXS1 | Disable | Enable | 0 | Enable |
| FXS2 | Disable | Enable | 0 | Enable |
| FXS3 | Disable | Enable | 0 | Enable |
| FXS4 | Disable | Enable | 0 | Enable |
|________|_______________|_____________|_______________|____________|
_______________________________________________
| EpId | DataPriority | MinPtime | MaxPtime |
|________|______________|__________|____________|
| FXO1 | 0 | 30 | 30 |
| FXO2 | 0 | 30 | 30 |
| FXO3 | 0 | 30 | 30 |
| FXO4 | 0 | 30 | 30 |
| FXS1 | 0 | 30 | 30 |
| FXS2 | 0 | 30 | 30 |
| FXS3 | 0 | 30 | 30 |
| FXS4 | 0 | 30 | 30 |
|________|______________|__________|____________|</code></pre>
<p class="p"></p>
<pre class="pre codeblock"><code>Global>Mipt.epSpecificCodecG711Mulaw[EpId=FXS1].DataPriority=10
Global>mipt.Restart
Global>Mipt.epSpecificCodecG711Mulaw
____________________________________________________________________
| EpId | EnableConfig | VoiceEnable | VoicePriority | DataEnable |
|________|_______________|_____________|_______________|____________|
| FXO1 | Disable | Enable | 0 | Enable |
| FXO2 | Disable | Enable | 0 | Enable |
| FXO3 | Disable | Enable | 0 | Enable |
| FXO4 | Disable | Enable | 0 | Enable |
| FXS1 | Disable | Enable | 0 | Enable |
| FXS2 | Disable | Enable | 0 | Enable |
| FXS3 | Disable | Enable | 0 | Enable |
| FXS4 | Disable | Enable | 0 | Enable |
|________|_______________|_____________|_______________|____________|</code></pre>
<p class="p"></p>
<pre class="pre codeblock"><code>________________________________________________
| EpId | DataPriority | MinPtime | MaxPtime |
|________|_______________|___________|__________|
| FXO1 | 0 | 30 | 30 |
| FXO2 | 0 | 30 | 30 |
| FXO3 | 0 | 30 | 30 |
| FXO4 | 0 | 30 | 30 |
| FXS1 | 10 | 30 | 30 |
| FXS2 | 0 | 30 | 30 |
| FXS3 | 0 | 30 | 30 |
| FXS4 | 0 | 30 | 30 |
|________|_______________|___________|__________|</code></pre>
<p class="p"></p>
<pre class="pre codeblock"><code>Global>Mipt.EpSpecificCodec[EpId=FXS1].EnableConfig=Enable
Global>Mipt.EpSpecificCodec[EpId=FXS1].GenericVoiceActivityDetection=Transparent
Global>Mipt.EpSpecificCodec
____________________________________________________________
| EpId | EnableConfig | GenericVoiceActivityDetection |
|________|________________|__________________________________|
| FXO1 | Disable | Conservative |
| FXO2 | Disable | Conservative |
| FXO3 | Disable | Conservative |
| FXO4 | Disable | Conservative |
| FXS1 | Enable | Transparent |
| FXS2 | Disable | Conservative |
| FXS3 | Disable | Conservative |
| FXS4 | Disable | Conservative |
|________|________________|__________________________________|</code></pre>
</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic reference nested0" aria-labelledby="ariaid-title34" id="reference_j4g_nbv_gfb">
<h1 class="title topictitle1" id="ariaid-title34">Online Help</h1>
<p class="shortdesc"><span class="ph">If you are not familiar with the meaning of the fields and
buttons, click <span class="keyword wintitle">Show Help</span>, located at the upper right corner of
the Web page. When activated, the fields and buttons that offer online help will
change to green and if you hover over them, the description will bedisplayed.</span></p>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested0" aria-labelledby="ariaid-title35" id="concept_v4k_q3h_1r">
<h1 class="title topictitle1" id="ariaid-title35">DGW Documentation</h1>
<div class="body conbody"><p class="shortdesc">Mediatrix devices are supplied with an exhaustive set of documentation. </p>
<p class="p">Mediatrix user documentation is available on the <a class="xref" href="http://documentation.media5corp.com" target="_blank">Media5 Documentation
Portal</a>.</p>
<div class="p">Several types of documents were created to clearly present the information you are looking for.
Our documentation includes:<ul class="ul" id="concept_v4k_q3h_1r__ul_bqy_cjh_1r">
<li class="li"><strong class="ph b">Release notes</strong>: Generated at each GA release, this document includes the known and
solved issues of the software. It also outlines the changes and the new features the release
includes.</li>
<li class="li"><strong class="ph b">Configuration notes</strong>: These documents are created to facilitate the configuration of a
specific use case. They address a configuration aspect we consider that most users will need to
perform. However, in some cases, a configuration note is created after receiving a question
from a customer. They provide standard step-by-step procedures detailing the values of the
parameters to use. They provide a means of validation and present some conceptual information.
The configuration notes are specifically created to guide the user through an aspect of the
configuration. </li>
<li class="li"><strong class="ph b">Technical bulletins</strong>: These documents are created to facilitate the configuration of a
specific technical action, such as performing a firmware upgrade.</li>
<li class="li"><strong class="ph b">Hardware installation guide</strong>: They provide the detailed procedure on how to safely and
adequately install the unit. It provides information on card installation, cable connections,
and how to access for the first time the Management interface.</li>
<li class="li"><strong class="ph b">User guide</strong>: The user guide explains how to customise to your needs the configuration
of the unit. Although this document is task oriented, it provides conceptual information to
help the user understand the purpose and impact of each task. The User Guide will provide
information such as where and how TR-069 can be configured in the Management Interface, how to
set firewalls, or how to use the CLI to configure parameters that are not available in the
Management Interface.</li>
<li class="li"><strong class="ph b">Reference guide</strong>: This exhaustive document has been created for advanced users. It
includes a description of all the parameters used by all the services of the Mediatrix units.
You will find, for example, scripts to configure a specific parameter, notification messages
sent by a service, or an action description used to create Rulesets. This document includes
reference information such as a dictionary, and it does not include any step-by-step
procedures. </li>
</ul></div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested0" aria-labelledby="ariaid-title36" id="concept_fqm_rv4_k4">
<h1 class="title topictitle1" id="ariaid-title36">Copyright Notice</h1>
<div class="body conbody"><p class="shortdesc">Copyright © 2022 Media5 Corporation.</p>
<p class="p">This document contains information that is proprietary to Media5 Corporation.</p>
<p class="p">Media5 Corporation reserves all rights to this document as well as to the Intellectual Property
of the document and the technology and know-how that it includes and represents.</p>
<p class="p">This publication cannot be reproduced, neither in whole nor in part, in any form whatsoever,
without written prior approval by Media5 Corporation.</p>
<p class="p">Media5 Corporation reserves the right to revise this publication and make changes at any time
and without the obligation to notify any person and/or entity of such revisions and/or
changes.</p>
</div>
</article></article></main></body></html> |
