[cisco-voip] Temp Fail since upgrade

[Daniel Pagan]

Adding to Ryan’s suggestion re: ACKs - I took a snip of some internal documentation I wrote re: MGCP debugs that might help. The MGCP transaction ID, in a CCM SDL trace or MGCP packet debug output, would look similar to this: http://i.imgur.com/O1YGnUO.png. Just showing the transaction ID matching between the MGCP command and 200 response. The observed event and Line package /hd (off-hook) highlighted can be ignored.

It might also be helpful to debug MGCP packets on the voice router… just make sure to disable console logging before leaving something like that running and increase the buffer size so you capture a failure. Seeing a missing 200 MGCP response in SDL traces doesn’t mean the router didn’t send one, and same the other way around where seeing an MGCP command sent from CUCM doesn’t mean it arrived at the router. In any case MGCP debugs off the router would come in handy in tandem with CCM traces.

Hope this helps.

- Dan


From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Ryan Ratliff (rratliff)
Sent: Monday, April 06, 2015 10:37 AM
To: Jason Aarons (AM)
Cc: cisco-voip voyp list
Subject: Re: [cisco-voip] Temp Fail since upgrade

The first place to look is MGCP packets being lost.  Search for “Retry” in the ccm traces similar to:
CCM|MGCPHandler TransId: 1476004 Timeout. Retry#1

That example is from a case in 2008 so what you see may not look exactly the same.  This type of message is an indicator that CCM is resending an MGCP message that wasn’t Ack’d by the gateway.  After 3 or so of those CCM will unregister the gateway and any phones talking to it will get Temp Fail.

Aside from lost messages it could be a RSIP or something that is gateway initiated causing the reset.

-Ryan

On Apr 5, 2015, at 10:15 AM, Jason Aarons (AM) <jason.aarons at dimensiondata.com<mailto:jason.aarons at dimensiondata.com>> wrote:

Nothing has changed with MGCP for a long time…Cisco just doesn’t test older IOS.

Pull normal debugs and traces, RTMT alerts, etc.

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Kevin Przybylowski
Sent: Monday, March 30, 2015 5:10 PM
To: Lisa Notarianni; Ryan Huff; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Temp Fail since upgrade


Are the mgcp gateways on a supported IOS for 10.5?

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lisa Notarianni
Sent: Monday, March 30, 2015 5:02 PM
To: Ryan Huff; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Temp Fail since upgrade

2 PRIs one each Communication Media Module– MGCP gateways. 2 Call Managers set up as redundant.

Cisco TAC looked at RTMT  with me today.  They want us to set up packet captures and try to duplicate the problem tomorrow.  I am just wondering if this is an upgrade issue that anyone else may be experiencing since we had no problems before the upgrade.



From: Ryan Huff [mailto:ryanhuff at outlook.com]
Sent: Monday, March 30, 2015 4:52 PM
To: Lisa Notarianni; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Temp Fail since upgrade

Lisa,
SIP or TDM/PRI?
Have you gandered into RTMT and taken a look at any active / recent alerts?
Thanks,
Ryan


-------- Original Message --------
From: Lisa Notarianni <lisa.notarianni at scranton.edu<mailto:lisa.notarianni at scranton.edu>>
Sent: Monday, March 30, 2015 04:48 PM
To: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: [cisco-voip] Temp Fail since upgrade
A few weeks ago we upgraded Call Manager and Unity Connection from 8.6.2 to 10.5.1.

We have experienced 2 intermittent outbound calling issues:


1.       “Temp Fail” shows on phone display and only option on phone button is “End Call”

2.       Outbound callers dial a number and hear nothing but notice the phone display says “Connected”.  Caller cannot hear anything.  Person they called cannot hear anything.
***These issues are only intermittent.***

We had no issues before the upgrade.

Is anyone experiencing the similar issues?

Thank you in advance.





itevomcid
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