Posted: Sun Nov 15, 2009 5:39 pm Post subject: Problem passing SIP traffic through Cisco 2821 Router
We need help resolving a SIP Trunk Problem. We have a data T1 with Ethernet handoff. Our SIP trunks work fine when our Asterisk PBX is attached to the Ethernet handoff. We can pass internet traffic through our Cisco 2821 Router. We have the handoff coming in on port 0/0 of our our Cisco 2821 Router and can pass Internet traffic to port 0/1. We cannot pass SIP traffic to port 0/1 even when the access lists inbound and outbound on both ports permit any.
Our router is Cisco 2821 Integrated Services Router.2821 SEC BUNDLE AIM-VPN-EPII-PLUS ADV IP SERV. Security bundle with Cisco IOS advanced IP services
Is there something special that needs to be done to make this work? Any advice would be much appreciated.
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