<div>What are you seeing for disconnect codes when the call drops? Can you post the q.931 debugs?</div>
<div><br clear="all">Matthew Saskin<br><a href="mailto:msaskin@gmail.com">msaskin@gmail.com</a><br>203-253-9571<br><br>July 18, 2010 - 1500m swim (in the hudson), 40k bike, 10k run<br>Please support the Leukemia & Lyphoma Society<br>
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<div class="gmail_quote">On Wed, Jan 27, 2010 at 5:02 PM, Robert Kulagowski <span dir="ltr"><<a href="mailto:rkulagow@gmail.com">rkulagow@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">If anyone remembers the saga of using a Cisco router as H.320 to H.323 gateway, after 2 years I've pretty much given up. Even with IOS 15.0, it's very unreliable. The TAC guy that I've been working with has been helpful, but it always seems to be one thing or another with H.320 or H.323 low level parameters, and "the other end" not doing something correct with regards to call setup or whatever.<br>
<br>Since I can't change the rest of the planet and get them to do it "The Cisco Way", I'm going to approach my issue differently.<br><br>I have Codian 3241 ISDN gateways. They work just fine in allowing H.323 to H.320 calls, so Codian has got it figured out, even if Cisco isn't there yet.<br>
<br>Should it be possible to connect a 3241 to a 2851 over ISDN PRI (back to back) and be able to place video calls? I'd like to peel off portions of my existing DID range and make them available for video calls.<br>
<br>In my lab I've got a 3241 connected via T1 crossover and have the serial port on the 2851 configured for isdn network-protocol-emulate. The PRI is up.<br><br>Outbound calls from the 3241 are hitting the router and going out to the telco. I can see in the q.931 debugs that 6 b-channels are brought up, but then the calls drop about 17 seconds later.<br>
<br>Is there anything "special" I need to do on the 2851 to allow it to work?<br><br>I've got:<br>network-clock-participate wic 0<br>network-clock-participate wic 1<br>network-clock-select 1 T1 0/0/0<br>network-clock-select 2 T1 0/1/0<br>
<br>controller T1 0/0/0<br>! To the Telco<br> cablelength long 0db<br> pri-group timeslots 1-24<br>!<br>controller T1 0/1/0<br>! To the Codian 3241<br> cablelength short 110<br> pri-group timeslots 1-24<br>!<br><br>interface Serial0/0/0:23<br>
no ip address<br> encapsulation hdlc<br> isdn switch-type primary-ni<br> isdn supp-service name calling<br> isdn integrate calltype all<br> no cdp enable<br>!<br>interface Serial0/1/0:23<br> no ip address<br> encapsulation hdlc<br>
isdn switch-type primary-ni<br> isdn protocol-emulate network<br> isdn integrate calltype all<br> no cdp enable<br>!<br><br>dial-peer voice 100 pots<br> description Connection to Codian 3241<br> incoming called-number .T<br>
direct-inward-dial<br> port 0/1/0:23<br>!<br>dial-peer voice 300 pots<br> description Connection to Telco<br> destination-pattern 1..........<br> forward-digits 11<br> port 0/0/0:23<br><br><br>_______________________________________________<br>
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