- Sentinel 100
- Sentinel 400
- Mediatrix S7 and S7 LP Series
- Mediatrix G7 Series
- Mediatrix C7 Series
- Mediatrix 4100 Series
- Mediatrix 3000 Series
- Mediatrix 4400 Series
- Mediatrix LP Series
|Fax Transmission Protocol||Clear Mode||T.38|
|Fax Transmission Speed||High speed||Low speed|
|Fax mode||ECM||non- ECM|
T.38 is an ITU recommendation for allowing transmission of fax over IP networks in real time.
Using redundancy increases transmission reliability, however the number of redundancy packets will also increase the bandwidth being used.
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.
This procedure is required only if SRTP is used.
If you do not know which port to use, refer to the Ports and Protocol Settings document.
This task allows you to set the unit’s behaviour after receiving an error to a SIP INVITE for T.38 fax.
Using T.38 with a Firewall
If you are not familiar with the meaning of the fields and buttons, click Show Help, 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 be displayed.
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.
Modulated Fax information from the PSTN is passed in-band end-to-end over a voice speech path in a IP network.
|If T.38 is enabled||
||Then the Mediatrix switches to T.38|
||Then the Mediatrix unit switches to Clear mode.|
|If a CED is detected before a CNG||The Mediatrix unit will first switch to Clear Channel and if T.38 is enabled, it will then switch to T.38.|
This procedure is only required if your fax machine is directly connected to a specific FXS port and if this port is not used for modem transmission.
Although the services can be configured in great part in the web browser, some aspects of the configuration can only be completed with the MIB parameters by:
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