AudioCodes Mediant 500 E-SBC, User Manual

Page: 793 / 920

User's Manual 54. Configuration Parameters Reference
Version 6.8 793 Mediant 500 E-SBC
Parameter Description
Web: Fax Detect Timeout Since
Connect (msec)
CLI: configure voip > sip-definition
general-settings > fax-detect-
timeout-since-connect
[FaxDetectTimeoutSinceConnect
]
Defines a timeout (in msec) for detecting fax from 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.
Web: SIP T.38 Version
CLI: 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: For a description on V.34 over T.38 fax relay, see V.34
Fax Support on page 166 .
Web: Fax Relay Enhanced
Redundancy Depth
EMS: Enhanced Relay
Redundancy Depth
CLI: enhanced-redundancy-depth
[FaxRelayEnhancedRedundancy
Depth]
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 2.
Web: Fax Relay Redundancy
Depth
EMS: Relay Redundancy Depth
CLI: 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: This parameter is applicable only to non-V.21 packets.
Web: Fax Relay Max Rate (bps)
EMS: Relay Max Rate
CLI: 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

[12] 31200bps = 31.2 kbps

[13] 33600bps = 33.6 kbps
Notes:

The rate is negotiated between both sides (i.e., the device
adapts to the capabilities of the remote side). Negotiation of
the T.38 maximum supported fax data rate is provided in
SIP’s SDP T38MaxBitRate parameter. The negotiated
T38MaxBitRate is the minimum rate supported between the