Can I bind multiple SIP Gateways to the same IP Interface?
In some cases you may want to create multiple SIP gateways to subscribe to multiple SIP Telephony Services at the same time, or to seperate LAN SIP calls from Global/Internet SIP calls. In order to bind multiple SIP gateways to the same IP interface the signaling port of the different gateways has to be different. Use the “call-signaling-port” command for this purpose 172.16.40.125(cfg)#gateway sip SIP1 172.16.40.125(gw-sip)[SIP1]#bind interface eth0 172.16.40.125(gw-sip)[SIP1]#no shutdown 172.16.40.125(cfg)#gateway sip SIP2 172.16.40.125(gw-sip)[SIP2]#bind interface eth0 172.16.40.125(gw-sip)[SIP2]#call-signaling-port 5062 172.16.40.125(gw-sip)[SIP2]#no shutdown If you do not change the signalling port you will get the following error message when you try to bind or activate the second gateway: % ANOTHER GATEWAY IS ALREADY BOUND TO THE SAME PORT Note: The ports are allocated even if a gateway is in shutdown. You must still use different signalling ports on each gateway! Note: The sign
