AudioCodes Mediant 800B User Manual page 422

Parameter
Remote Delayed Offer
Support
sbc-rmt-delayed-offer
[IpProfile_SBCRemoteDelay
edOfferSupport]
Remote Representation
Mode
sbc-rmt-rprsntation
[IpProfile_SBCRemoteRepre
sentationMode]
Keep Incoming Via Headers
sbc-keep-via-headers
[IpProfile_SBCKeepVIAHead
ers]
Keep Incoming Routing
User's Manual
SDP.
Defines whether the remote endpoint supports delayed offer (i.e.,
initial INVITEs without an SDP offer).

[0] Not Supported = Initial INVITE requests without SDP are not
supported.

[1] Supported = (Default) Initial INVITE requests without SDP are
supported.
Note: For the parameter to function, you need to assign extension
coders to the IP Profile of the SIP entity that does not support delayed
offer (using the IpProfile_SBCExtensionCodersGroupName
parameter).
Enables interworking SIP in-dialog, Contact and Record-Route
headers between SIP entities. The parameter defines the device's
handling of in-dialog, Contact and Record-Route headers for
messages sent to the SIP entity associated with the IP Profile.

[-1] According to Operation Mode = (Default) Depends on the
setting of the 'Operation Mode' parameter in the IP Group or SRDs
table:

B2BUA: Device operates as if the parameter is set to Replace
Contact [0].

Call State-full Proxy: Device operates as if the parameter is set
to Add Routing Headers [1].

[0] Replace Contact = Device replaces the address in the Contact
header, received in incoming messages from the other side, with
its own address in the outgoing message sent to the SIP entity.

[1] Add Routing Headers = Device adds a Record-Route header for
itself to outgoing messages (requests\responses) sent to the SIP
entity in dialog-setup transactions. The Contact header remains
unchanged.

[2] Transparent = Device doesn't change the Contact header and
doesn't add a Record-Route header for itself. Instead, it relies on
its' own inherent mechanism to remain in the route of future
requests in the dialog (for example, relying on the way the
endpoints are set up or on TLS as the transport type).
Enables interworking SIP Via headers between SIP entities. The
parameter defines the device's handling of Via headers for messages
sent to the SIP entity associated with the IP Profile.

[-1] According to Operation Mode = Depends on the setting of the
'Operation Mode' parameter in the IP Groups table or SRDs table:

B2BUA: Device operates as if the parameter is set to Disable
[0].

Call State-full Proxy: Device operates as if the parameter is set
to Enable [1].

[0] Disable = Device removes all Via headers received in the
incoming SIP request from the other leg and adds a Via header
identifying only itself, in the outgoing message sent to the SIP
entity.

[1] Enable = Device retains the Via headers received in the
incoming SIP request and adds itself as the top-most listed Via
header in the outgoing message sent to the SIP entity.
Enables interworking SIP Record-Route headers between SIP entities.
The parameter defines the device's handling of Record-Route headers
422
Mediant 800B Gateway & E-SBC
Description
Document #: LTRT-10298