AudioCodes Mediant 4000 SBC User Manual page 869

User's Manual
Parameter
SDP Session Owner
configure voip > sip-
definition settings >
sdp-session-owner
[SIPSDPSessionOwner
]
configure voip > sip-
definition settings >
sdp-ver-nego
[EnableSDPVersionNeg
otiation]
Subject
configure voip > sip-
definition settings > usr-
def-subject
[SIPSubject]
Version 7.2
version' is used, for example:
User-Agent: Audiocodes-Sip-Gateway-Mediant 4000
SBC/v.7.20A.000.038
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 is
"AudiocodesGW".
For example:
o=AudiocodesGW 1145023829 1145023705 IN IP4
10.33.4.126
Note: The parameter is applicable only when the device creates a new
SIP message (and SDP) such as when the device plays a ringback tone.
The parameter is not applicable to SIP messages that the device receives
from one end and sends to another (i.e., does not modify the SDP's 'o'
field).
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
increment the origin value even in scenarios where they want to re-
negotiate, the device can assume that the remote party operates
according to RFC 3264, and in cases where the origin field is not
incremented, the device does not re-negotiate SDP capabilities.

[0] Disable = (Default) The device negotiates any new SDP re-offer,
regardless of the origin field.

[1] Enable = The device negotiates only an SDP re-offer with an
incremented origin field.
Defines the Subject header value in outgoing INVITE messages. If not
specified, the Subject header isn't included (default).
The maximum length is up to 50 characters.
869
60. Configuration Parameters Reference
Description
Mediant 4000 SBC