Would like to know how can I convert and use CISCO 3620 router which has a voip module to use for SIP by connecting FWD . Would like to know that does new versions of IOS for 3600 series support SIP and if they do than can I connect the router over ADSL ( ethernet from DLINK adsl router ) to connect FDW SIP proxy to recieve VOIP calls ?
Are you trying to convert SIP to PSTN? All I see are references to SIP traffic. Where is the PSTN? Is the 'voip module' a voice module? The connection to the ADSL should work, it is just IP to IP. But the difference between the upstream and downstream may cause you some headaches if you have too much traffic.
I have a PRI for PSTN, 10/100 for SIP, and am running IOS 12.3(13a). If you would like to see my confg, let me know.
poing
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