AudioCodes Mediant 1000 User Manual page 232

Table 6-7: SIP Configuration Parameters (continues on pages 230 to 236)
ini File Field Name
Web Parameter Name
CoderName
VBRCoderHeaderFormat
TransparentCoderOnDataCa
ll
IsFaxUsed
T38UseRTPPort
CngDetectorMode
DefaultReleaseCause
IPAlertTimeout
SIP User's Manual
Valid Range and Description
Defines the gateway's coder list (Coders table). Up to five coders can be
configured.
Enter coders in the following format:
CoderName=<Coder Name>,<Ptime>,<Rate>,<Payload Type>,<Silence
Suppression Mode>.
Note 1: The coder name is case-sensitive.
Note 2: If silence suppression is not defined (for a specific coder), the value
defined by the parameter EnableSilenceCompression is used.
Note 3: The value of several fields is hard-coded according to well-known
standards (e.g., the payload type of G.711 U-law is always 0). Other values
can be set dynamically. If no value is specified for a dynamic field, a default
value is assigned. If a value is specified for a hard-coded field, the value is
ignored.
Note 4: Only the ptime of the first coder in the defined coder list is declared in
INVITE / 200 OK SDP, even if multiple coders are defined.
Note 5: If the coder G.729 is selected and silence suppression is disabled (for
this coder), the gateway includes the string 'annexb=no' in the SDP of the
relevant SIP messages. If silence suppression is enabled or set to 'Enable w/o
Adaptations', 'annexb=yes' is included. An exception to this logic is when the
remote gateway is a Cisco device (IsCiscoSCEMode).
Note 6: For a list of supported coders, refer to
For example:
CoderName = g711Alaw64k,20,,,0
CoderName = g711Ulaw64k,40
CoderName = g7231,90,1,,1
CoderName = g726,$$,$$,,0.
Defines the format of the RTP header for VBR coders.
0 = Payload only (no header, no TOC, no m-factor) (default).
1 = Supports RFC 2658 - 1 byte for interleaving header (always 0), TOC, no
m-factor.
2 = Payload including TOC only, allow m-factor.
3 = RFC 3558.
0 = Only use coders from the coder list (default).
1 = Use transparent coder for data calls (according to RFC 4040).
The 'Transparent' coder can be used on data calls. When the gateway
receives a Setup message from the ISDN with 'TransferCapabilities = data', it
can initiate a call using the coder 'Transparent' (even if the coder is not
included in the coder list).
The initiated INVITE includes the following SDP attribute:
a=rtpmap:97 CLEARMODE/8000
The default Payload Type is set according to the CoderName table. If the
Transparent coder is not set in the Coders table, the default value is set to 56.
The Payload Type is negotiated with the remote side, i.e., the selected
Payload Type is according to the remote side selection.
The receiving gateway must include the 'Transparent' coder in its coder list.
For a description of this parameter, refer to
Defines that the T.38 packets are sent / received using the same port as RTP
packets.
0 = Use the RTP port +2 to send / receive T.38 packets (default).
1 = Use the same port as the RTP port to send / receive T.38 packets.
For a description of this parameter, refer to
For a description of this parameter, refer to
For a description of this parameter, refer to
232
Mediant 1000
Table 5-5 on page 79.
Table 5-3 on page 64.
Table 5-29 on page 152.
Table 5-7 on page 85.
Table 5-3 on page 64.
Document #: LTRT-83301