AudioCodes Mediant 500L - Page 1112

User's Manual 1112 Document #: LTRT-10532
Mediant 500L Gateway & E-SBC
Parameter Description
fax-detect-timeout-since-connect
[FaxDetectTimeoutSinceConnect]
the Tel side during an established voice call. The
interval starts from when the voice call is
established. If the device detects a fax tone within
the interval, it ends the voice session and sends
a T.38 or VBD re-INVITE message to the IP side
and processes the fax. If the interval expires
without any received fax event, the device
ignores all subsequent fax events during the
voice session.
The valid value is 0 to 120000. The default is 0. If
set to 0, the device can detect fax during the
entire voice call.
SIP T.38 Version
configure voip > sip-definition settings > sip-t38-
ver
[SIPT38Version]
Determines the T.38 fax relay version.
 [-1] Not Configured = (Default) No T.38
 [0] Version 0
 [3] Version 3 = T.38 Version 3 (V.34 over
T.38)
Note:
 Interworking of T.38 Version 3 is supported
only for Gateway calls. For SBC calls, the
device forwards T.38 Version 3 transparently
(as is) to the other leg (i.e., no transcoding).
 For a description on V.34 over T.38 fax relay,
see V.34 Fax Support on page 194.
Fax Relay Enhanced Redundancy Depth
configure voip > media fax-modem > enhanced-
redundancy-depth
[FaxRelayEnhancedRedundancyDepth]
Defines the number of times that control packets
are retransmitted when using the T.38 standard.
The valid range is 0 to 4. The default is .
Fax Relay Redundancy Depth
configure voip > media fax-modem > redundancy-
depth
[FaxRelayRedundancyDepth]
Defines the number of times that each fax relay
payload is retransmitted to the network.
 [0] = (Default) No redundancy
 [1] = One packet redundancy
 [2] = Two packet redundancy
Note: The parameter is applicable only to non-
V.21 packets.
Fax Relay Max Rate (bps)
configure voip > media fax-modem > max-rate
[FaxRelayMaxRate]
Defines the maximum rate (in bps) at which fax
relay messages are transmitted (outgoing calls).
 [0] 2400 = 2.4 kbps
 [1] 4800 = 4.8 kbps
 [2] 7200 = 7.2 kbps
 [3] 9600 = 9.6 kbps
 [4] 12000 = 12.0 kbps
 [5] 14400 = 14.4 kbps (default)
 [6] 16800bps = 16.8 kbps
 [7] 19200bps = 19.2 kbps
 [8] 21600bps = 21.6 kbps
 [9] 24000bps = 24 kbps
 [10] 26400bps = 26.4 kbps
 [11] 28800bps = 28.8 kbps