AudioCodes Mediant 600 - Page 640

SIP User's Manual 640 Document #: LTRT-83310
Mediant 600 & Mediant 1000
Parameter Description
Web: V.34 Modem Transport
Type
EMS: V34 Transport
[V34ModemTransportType
]
Determines the V.90/V.34 modem transport type.
 [0] Disable = Disable (Transparent)
 [1] Enable Relay = N/A
 [2] Enable Bypass = (default)
 [3] Events Only = Transparent with Events
Note: This parameter can also be configured per IP Profile, using the
IPProfile parameter (see 'Configuring IP Profiles' on page 219).
EMS: Bell Transport Type
[BellModemTransportType
]
Determines the Bell modem transport method.
 [0] = Transparent (default)
 [2] = Bypass
 [3] = Transparent with events
Web/EMS: Fax CNG Mode
[FaxCNGMode]
Determines the device's behavior upon detection of a CNG tone.
 [0] = Does not send a SIP Re-INVITE upon detection of a fax CNG
tone when the parameter CNGDetectorMode is set to 1 (default).
 [1] = Sends a SIP Re-INVITE upon detection of a fax CNG tone
when the parameter CNGDetectorMode is set to 1.
Web/EMS: CNG Detector
Mode
[CNGDetectorMode]
Determines whether the device detects the fax Calling tone (CNG).
 [0] Disable = The originating device doesn’t detect CNG; the CNG
signal passes transparently to the remote side (default).
 [1] Relay = CNG is detected on the originating side. CNG packets
are sent to the remote side according to T.38 (if IsFaxUsed = 1)
and the fax session is started. A SIP Re-INVITE message isn’t sent
and the fax session starts by the terminating device. This option is
useful, for example, when the originating device is located behind a
firewall that blocks incoming T.38 packets on ports that have not
yet received T.38 packets from the internal network (i.e., originating
device). To also send a Re-INVITE message upon detection of a
fax CNG tone in this mode, set the parameter FaxCNGMode to 1.
 [2]
Events Only = CNG is detected on the originating side and a fax
session is started by the originating side using the Re-INVITE
message. Usually, T.38 fax session starts when the ‘preamble’
signal is detected by the answering side. Some SIP devices don’t
support the detection of this fax signal on the answering side and
thus, in these cases it is possible to configure the device to start
the T.38 fax session when the CNG tone is detected by the
originating side. However, this mode is not recommended.
Note: This parameter can also be configured per IP Profile, using the
IPProfile parameter (see 'Configuring IP Profiles' on page 219).
Web: Fax Relay Enhanced
Redundancy Depth
EMS: Enhanced Relay
Redundancy Depth
[FaxRelayEnhancedRedun
dancyDepth]
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 value is 2.
Web: Fax Relay
Redundancy Depth
EMS: Relay Redundancy
Depth
[FaxRelayRedundancyDep
th]
Defines the number of times that each fax relay payload is
retransmitted to the network.
 [0] = No redundancy (default).
 [1] = One packet redundancy.
 [2] = Two packet redundancy.
Note: This parameter is applicable only to non-V.21 packets.