[cisco-voip] Increasing the timer for ring back from a PSTNprovider?

dominguez herrera sergio andres sergio at fi-b.unam.mx
Thu Dec 20 18:16:50 EST 2007


Thanks for the link, however I have not been able to solve the problem, 
The CISCO doc advises to set the timeout to 60 seconds, this is the 
default value at the CallManager so I didnt even change it. Whatsmore 
the call gets disconnected just after 8 or 9 seconds. :o(

I have run a debug in the H323 Gateway and I found this:

Dec 19 2007 17:25:21 CST: :FEATURE_VSA attributes are: 
feature_name:0,fearture_time:1729578464,feature_id:12429
Dec 19 2007 17:25:21 
CST: //12429/0072923F0700/CCAPI/ccIFCallSetupRequestPrivate:
   SPI Call Setup Request Is Success; Interface Type=6, FlowMode=1
Dec 19 2007 17:25:21 CST: //12429/0072923F0700/CCAPI/ccCallSetContext:
   Context=0x67567048
Dec 19 2007 17:25:21 CST: //12428/0072923F0700/CCAPI/ccSaveDialpeerTag:
   Outgoing Dial-peer=4
Dec 19 2007 17:25:21 
CST: //12429/0072923F0700/CCAPI/cc_api_call_proceeding:
   Interface=0x671ACFE4, Progress Indication=NULL(0)
Dec 19 2007 17:25:30 
CST: //12429/0072923F0700/CCAPI/cc_api_call_disconnected:
   Cause Value=42, Interface=0x671ACFE4, Call Id=12429
Dec 19 2007 17:25:30 
CST: //12429/0072923F0700/CCAPI/cc_api_call_disconnected:
   Call Entry(Responsed=TRUE, Cause Value=42, Retry Count=0)
Dec 19 2007 17:25:30 

Call Disconnected due to Cause Value=42, I looked up this cause value 
in some cisco doc, and it says:

Cause Value =42 
 Switching equipment congestion 
   The destination cannot be reached because the network switching 
equipment is temporarily overloaded. 
 
I guess my PSTN provider is sending me a disconnect value. 
Am I right?

Is there a way to ignore cause value number 42 at the gateway or just 
ignore it for a while?

Thanks



> 
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800
> 94487.shtml
> 
> 
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of dominguez
> herrera sergio andres
> Sent: Thursday, December 20, 2007 11:56 AM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] Increasing the timer for ring back from a
> PSTNprovider?
> 
> Im sorry I dint include a subject in my last mail.
> Please follow this thread rather than the previous one.
> 
> Im having a problem in one of our callmanager clusters. This cluster 
> has one H323 gateway connected through an E1 digital trunk to this 
> particular provider.
> 
> When users dial some long distance calls, the PSTN provider takes too 
> long in returning a ring back to the gateway, the user then hears a 
> fast busy tone rather than a ring.
> 
> This problem happens with this provider only, we use other PSTN 
> providers in our others clusters and we dont experience this problem 
> when dialing the same long distance numbers.
> 
> I have opened a Trouble Ticket with the PSTN provider and they have 
> told me that our PBX is disconnecting the call too soon, and that our 
> PBX should give them some more time before assuming the call could 
not 
> be completed.
> 
> My question is, is there a way to increase the time a gateway waits 
for 
> a ring back from the provider? Is this a CallManager configurable 
> setting or is it an IOS setting? I guess it is an IOS setting, but I 
> cant fugure out which one is it, I dont seem to find anything related 
> in dial-peer configuration mode.
> 
> Many thanks for your help.
> 
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
> 
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