Manually Configuring The Sip Contact Ip Address; Initiating A New Sip Session For Redirected Sip Calls; Enabling The Sip Penalty-Box Feature; Disabling Sip Transport Protocols - Patton electronics SmartNode Series Software Configuration Manual

SmartWare Software Configuration Guide
Manually configuring the SIP contact IP address
Normally SIP cannot pass a router, which does NAPT. However, if the router only replaces the IP addresses but
not the port numbers, it is possible to get SIP working through the NAT, by configuring the global IP address
of the NAT router as the contact-address in the SIP gateway. The following procedure shows how the contact
address can be configured.
Mode: gateway sip <gw-name>/service
Step
1 [ name ] (svc-sip)[service]# contact-address
<ip-address>

Initiating a new SIP session for redirected SIP calls

Normally, if a SIP call is redirected to a different location by receiving a SIP 3xx response, only the request
header is replaced in the original INVITE message and the INVITE is sent to the new destination. Using the
following procedure, the SIP gateway can be forced to create a completely new session for forwarded calls.
Mode: gateway sip <gw-name>/service
Step
1
[ name ] (svc-sip)[service]# [no] new-
session-after-redirect

Enabling the SIP penalty-box feature

The following command enables the SIP penalty-box feature, which causes a non-responsive server not to be
contacted again for the specified duration. A server will be in the penalty box for the specified time as soon as a
single transaction with that server fails.
Mode: gateway sip <sip>
Step
1
[ name ] (gw-sip)[ gw-name ]# penalty-box-
time <seconds>

Disabling SIP transport protocols

The following command disables one of the SIP gateways transport protocols. Some SIP servers do not sup-
port TCP, only UDP. In this instance you would disable the TCP transport protocol.
Mode: gateway sip <sip>
Step
1
[ name ] (gw-sip)[ gw-name ]# no transport
{tcp|udp}
Gateway configuration task list
Command
Command
Command
Command
40 • SIP gateway configuration
Purpose
Configure the global IP address used by the
NAT router
Purpose
Enables/disables creation of a new session
after a redirect response. The default
is disabled.
Purpose
Enables the SIP penalty-box feature.
Purpose
Disables the SIP TCP or UDP
transport protocol.
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