AudioCodes Mediant 4000 SBC User Manual page 436

Parameter
Mode
sbc-rmt-rprsntation
[IpProfile_SBCRemoteRepre
sentationMode]
Keep Incoming Via Headers
sbc-keep-via-headers
[IpProfile_SBCKeepVIAHea
ders]
Keep Incoming Routing
Headers
sbc-keep-routing-headers
[IpProfile_SBCKeepRouting
Headers]
User's Manual
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 = The URI host part in the Contact header of
the received message (from the other side) is replaced with the
device's address or with the value of the 'SIP Group Name'
parameter (configured in the IP Groups table) 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
for request/response messages sent to the the SIP entity associated
with the IP Profile.

[-1] According to Operation Mode = (Default) Depends on the
setting of the 'Operation Mode' in the IP Group 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 the Record-Route headers received
in requests and responses from the other side, in the outgoing SIP
message sent to the SIP entity. The device creates a route set for
436
Mediant 4000 SBC
Description
Document #: LTRT-40203