VoIP Pen test

[sisram2 () gmail com]

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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