[cisco-voip] PSTN call disconnect issue

[Bob Zanett (AM)]

Here are a few links on MGCP and troubleshooting.   It would be well worth your time to read up on MGCP and ISDN - if you have not yet.
http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a00801ad22f.shtml   A little dated but is around CallManager 4.X.

Doc Wiki Links:
http://docwiki.cisco.com/wiki/Cisco_IOS_Voice_Troubleshooting_and_Monitoring_Guide#Troubleshooting_Cisco_IOS_Voice_Overview    Good starting point.  Under this link see:  http://docwiki.cisco.com/wiki/Cisco_IOS_Voice_Troubleshooting_and_Monitoring_Guide#MGCP_and_Related_Protocol_Interface_Troubleshooting


Kind Regards -
Bob Zanett
Technical Services Architect
Dimension Data Americas

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mike King
Sent: Sunday, February 05, 2012 10:02 PM
To: Shaihan Jaffrey
Cc: Cisco VOIP
Subject: Re: [cisco-voip] PSTN call disconnect issue


What type of router? (2800, 2900, something else?)
What type of Service is it?

POTS, ISDN, PRI/T1, SIP, Something else?

What are you getting?  Calls complete and then hang up?   Calls don't complete?  Dead air?  Talking and calls drop after 2 minutes, 5 minutes, 10 minutes?  One way audio in this at all?

If it's a digital type service, are you taking errors on the line?

(Assuming you have a PRI/T1 on controller 0/0
show controller t1
show isdn status
show serial 0/0/0:23

Mike
On Sun, Feb 5, 2012 at 6:18 AM, Shaihan Jaffrey <schaehan at gmail.com<mailto:schaehan at gmail.com>> wrote:
We are getting call disconnect issues for both incoming and outgoing calls to PSTN. How should i proceed troubleshooting to identify whether it is due to some issue at our Voice Gateway or because of some issue at Service provider's end.

We are using MGCP on Cisco Voice Gateway and Call Manager ver 4.3 as Publisher and Subscriber.


Regards.

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