VoIP Pen test

Hi Guys,

As mentioned earlier I have come across couple of Cisco routers having only ports 1720 and 5060 OPEN for VoIP service. I have attempted Sivus, SIPscan and Protos Fuzzer but invain.

Can some suggest some methodology or testing approach to test these routers. Its urgent, so a quick response is very much appreciated.

Thanks everyone
Cheers
Ram

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