AudioCodes Mediant 4000 SBC User Manual page 873

User's Manual
Parameter
configure voip >
sip-definition
settings > rport-
support
[EnableRport]
configure voip > sip-
definition settings > x-
channel-header
[XChannelHeader]
[EnableRekeyAfter181]
configure voip >
sip-definition
settings >
number-of-active-
dialogs
[NumberOfActiveDialog
s]
Network Node ID
configure voip > sip-
definition settings > net-
node-id
Version 7.2
Enables the usage of the 'rport' parameter in the Via header.

[0] = Disabled (default)

[1] = Enabled
The device adds an 'rport' parameter to the Via header of each outgoing
SIP message. The first Proxy that receives this message sets the 'rport'
value of the response to the actual port from where the request was
received. This method is used, for example, to enable the device to
identify its port mapping outside a NAT.
If the Via header doesn't include the 'rport' parameter, the destination port
of the response is obtained from the host part of the Via header.
If the Via header includes the 'rport' parameter without a port value, the
destination port of the response is the source port of the incoming
request.
If the Via header includes 'rport' with a port value (e.g., rport=1001), the
destination port of the response is the port indicated in the 'rport'
parmeter.
Enables the device to add the SIP X-Channel header to outgoing SIP
messages. The header provides information on the physical channel on
which the call is received or sent.

[0] Disable = (Default) X-Channel header is not used.

[1] Enable = X-Channel header is generated by the device and sent in
SIP INVITE requests and 180, 183, and 200 OK responses. The
header includes the -channel and the device's IP address, using the
following syntax:
x-channel: ds/ds1-/<channel>;IP=<device's IP
address>
For example, the below shows a call on channel 4 of the device with IP
address 192.168.13.1:
x-channel: ds/ds1-1/4;IP=192.168.13.1
Enables the device to send a re-INVITE with a new (different) SRTP key
(in the SDP) if a SIP 181 response is received ("call is being forwarded").
The re-INVITE is sent immediately upon receipt of the 200 OK (when the
call is answered).

[0] = Disable (default)

[1] = Enable
Note: The parameter is applicable only if SRTP is used.
Defines the maximum number of concurrent, outgoing SIP REGISTER
dialogs. The parameter is used to control the registration rate.
The valid range is 1 to 20. The default is 20.
Note:

Once a 200 OK is received in response to a REGISTER message, the
REGISTER message is not considered in this maximum count limit.

The parameter applies only to outgoing REGISTER messages (i.e.,
incoming is unlimited).
Defines the Network Node Identifier of the device for Avaya UCID.
The valid value range is1 to 0x7FFF. The default is 0.
Note:

To use this feature, you must set the parameter to any value other
873
60. Configuration Parameters Reference
Description
Mediant 4000 SBC