Configuring a SIP to SIP Gateway

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May 7th, 2007
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I am trying to configure a SIP to SIP gateway so I can get a SIP trunk through the firewall. Do I use Dial Peers to direct the traffic? The document gives me basics but not specifics.

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paolo bevilacqua Mon, 05/07/2007 - 09:15
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Yes you use dial-peers voip for both inbound and outbound. Generally speaking, you will have "codec transparent" set on these.

You will need and IP-to-IP image to do that, filename ends in _isv, but you probably knew that already.


Does it helps? please rate post if it does!

jbroderick Mon, 05/07/2007 - 09:33
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No, I didn't know this. I am using a 2821 router running this image: c2800nm-advipservicesk9-mz.124-11.T1.bin. Will this work?

paolo bevilacqua Mon, 05/07/2007 - 11:58
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No I don't think it will work. Anyway, another needed piece of configuration is:


voice service voip

allow-connections sip to sip


Then, to see how things are going, "term mon" and "debug ccsip message" when placing a call.


Thank you for the nice rating and good luck!

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