Turning an AS5350 into a H.323 Voice Gateway

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Mar 16th, 2007
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Hi Netpros!


I'm trying to use my AS5350 as a voice gateway and I have not found usefull information regarding this topic.


What I have so far is the following:

(attached document)


Right now I receive the call from the E1, but the AS is not handling the call as a voice call,just as a modem connection. The thing is, How can I tell the AS to use DSP resources with all the incoming and outgoing calls?


Thanks for the help!



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paolo bevilacqua Sat, 03/17/2007 - 04:51
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Hi,


please configure "isdn incoming-voice voice".


Hope this helps, if so please rate post!

carlosmadriz Mon, 03/19/2007 - 07:38
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p.b, thanks for your help, in the AS5350 this command it's not supported, the only way is to configure isdn incoming-voice modem. (I have tried several IOS versions)


The funny thing is,I have discover that sometimes the AS5350 answer correctly and gives me secondary dial tone and voila! I can dial an extension number from the callmanager and have a normal conversation with a phone user.


But sometimes the AS5350 answers the call as a modem call!!!


Someone have an idea?

mikedavi1 Mon, 03/19/2007 - 17:27
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The trick is, for AS5xxx voice gateways, there's no such thing as a "default" dial-peer. Any calls that do not match an inbound dial-peer are treated as "data" and a modem answers.


So when an inbound dial-peer is matched, you get voice treatment as you hope. If not, you get the modem.


HTH,


Mike

mikedavi1 Tue, 03/20/2007 - 07:32
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At a quick glance, it looks like the only inbound pots peer you are matching is:



dial-peer voice 2 pots

destination-pattern 2...

port 3/0:D


So any calls coming on Ser3/0 are working as you described. Calls coming on Ser3/1 will be treated as "data" and the modem will answer.



paolo bevilacqua Tue, 03/20/2007 - 07:49
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Hi Mike, I think the 5xxx software by design, does not use port in matching incoming pots dial-peer:


http://cisco.com/en/US/tech/tk652/tk90/technologies_tech_note09186a008010fed1.shtml


Note: Step 4 (voice-port) is not applicable to voice or dial platforms such as AS5300, AS5350, AS5400, AS5800 and AS5850. If any one of first three steps are not used, then match dial-peer 0, and the call is treated as a dial modem call. This means that customers can get modem tones as opposed to dial tones for inbound calls.


So you will have to use "incoming calling-number" to for this. I have seen this behavoir also on a 28xx in a recent case.


mikedavi1 Tue, 03/20/2007 - 08:04
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Hi Paolo. Thanks for the link.


Hmm.. From what I've seen first hand, the document is incorrect. I believe it should read that "Step 5 is not applicable..." In the ISR, dial-peer 0 does exist and is used to catch any unmatched inbound calls. In my experience AS5xxx has no such concept. Maybe I can confirm this internally...


Indeed, in this case, inconsistent with the doc, he is getting some voice calls through, even in the absence of steps 1-3. Though you are correct, a DP with incoming-called, even without a voice port would do the trick.


Mike



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