AudioCodes Mediant 2000 User Manual page 471

SIP User's Manual
Parameter
EMS: Is CISCO Sce Mode
[IsCiscoSCEMode]
Web: User-Agent Information
EMS: User Agent Display
Info
[UserAgentDisplayInfo]
Web/EMS: SDP Session
Owner
[SIPSDPSessionOwner]
[EnableSDPVersionNegotia
tion]
Version 6.4
REGISTER responses contain the "gruu" parameter in each Contact
header. This parameter contains a SIP or SIPS URI that represents a
GRUU corresponding to the UA instance that registered the contact.
The server provides the same GRUU for the same AOR and
instance-id when sending REGISTER again after registration
expiration. RFC 5627 specifies that the remote target is a GRUU
target if its' Contact URL has the "gr" parameter with or without a
value.

Using GRUU: The UA can place the GRUU in any header field that
can contain a URI. It must use the GRUU in the following
messages: INVITE request, its 2xx response, SUBSCRIBE
request, its 2xx response, NOTIFY request, REFER request and
its 2xx response.
Determines whether a Cisco gateway exists at the remote side.

[0] = No Cisco gateway exists at the remote side (default).

[1] = A Cisco gateway exists at the remote side.
When a Cisco gateway exists at the remote side, the device must set
the value of the 'annexb' parameter of the fmtp attribute in the SDP to
'no'. This logic is used if the parameter EnableSilenceCompression is
set to 2 (enable without adaptation). In this case, Silence Suppression
is used on the channel but not declared in the SDP.
Note: The IsCiscoSCEMode parameter is applicable only when the
selected coder is G.729.
Defines the string that is used in the SIP User-Agent and Server
response headers. When configured, the string
<UserAgentDisplayInfo value>/software version' is used, for example:
User-Agent: myproduct/v.6.40.010.006
If not configured, the default string, <AudioCodes product-
name>/software version' is used, for example:
User-Agent: Audiocodes-Sip-Gateway-Mediant
2000/v.6.40.010.006
The maximum string length is 50 characters.
Note: The software version number and preceding forward slash (/)
cannot be modified. Therefore, it is recommended not to include a
forward slash in the parameter's value (to avoid two forward slashes
in the SIP header, which may cause problems).
Defines the value of the Owner line ('o' field) in outgoing SDP
messages.
The valid range is a string of up to 39 characters. The default value is
'AudiocodesGW'.
For example:
o=AudiocodesGW 1145023829 1145023705 IN IP4
10.33.4.126
Enables the device to ignore new SDP re-offers (from the media
negotiation perspective) in certain scenarios (such as session
expires). According to RFC 3264, once an SDP session is
established, a new SDP offer is considered a new offer only when the
SDP origin value is incremented. In scenarios such as session
expires, SDP negotiation is irrelevant and thus, the origin field is not
changed.
Even though some SIP devices don't follow this behavior and don't
471
A. Configuration Parameters Reference
Description
November 2011