Medias Mediatrix 1204, Справочное руководство

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Chapter 17 - Fax Transmission T.38 Fax
218 Mediatrix 1204
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To set T.38 fax transmission:
1. Enable T.38 by setting the dataIfCodecT38Enable variable to enable .
2. Set the number of redundancy packets sent with the current packet in the
dataIfCodecT38ProtectionLevel variable.
This is the standard redundancy offered by T.38. Please see step 3 for additional reliability options
for T.38.
Available values range from 1 to 5, 3 being the default value.
3. For additional reliability, define the number of times T.38 packets are retransmitted in the
dataIfT38FinalFramesRedundancy variable.
This only applies to the T.38 packets where the PrimaryUDPTL contains the following T.38 data
type:
• HDLC_SIG_END,
• HDLC_FCS_OK_SIG_END,
• HDLC_FCS_BAD_SIG_END and
• T4_NON_ECM_SIG_END
4. Restart the Mediatrix 1204 so that the changes may take effect.
T.38 No-Signal
You can set the Mediatrix 1204 to send no-signal packets during a T.38 fax transmission. The Mediatrix 1204
sends no-signal packets if no meaningful data have been sent for a user-specified period of time.
X
To send T.38 no-signal:
1. Set the period, in seconds, at which no-signal packets are sent during a T.38 transmission in the
dataIfT38NoSignalTimeout variable.
No-signal packets are sent out if there are no valid data to send.
2. Enable the sending of T.38 no-signal packets by setting the dataIfT38NoSignalEnable variable to
enable .