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Home > Archive > Voice over IP Cisco > September 2007 > quick CCM Trace question
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quick CCM Trace question
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| Ed Leatherman 2007-09-28, 1:11 pm |
| Real basic question here..
I have someone reporting a dropped call between IP Phone and PSTN, so I dug
up the CCM traces for event. Tracked it down and found the following message
inbound to CCM from the MGCP PRI:
DISCONNECT, pd = 8, callref = 0x021C, Message Size = 9 bytes
Cause i = 0x8090 - Normal call clearing
I don't see any SCCP messages to/from the IP Phone between the time the
media transmission begins and that event occurs.
Am I correct in interpreting that this is the gateway telling callmanager
that the PSTN has disconnected the call?
--
Ed Leatherman
Senior Voice Engineer
West Virginia University
Telecommunications and Network Operations
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| Patrick Diener 2007-09-28, 1:11 pm |
| if you are really sure that CCM did receive this message inbound from
the GW and did not send it, then it indicates that the PSTN
disconnected the call.
You should also see CCM acknowledging the DISCONNECT message with a
RELEASE and the PSTN would send a RELEASE COMPLETE to terminate the
call...
Regards
Patrick
On 9/28/07, Ed Leatherman <ealeatherman@gmail.com> wrote:
> Real basic question here..
> I have someone reporting a dropped call between IP Phone and PSTN, so I dug
> up the CCM traces for event. Tracked it down and found the following message
> inbound to CCM from the MGCP PRI:
> DISCONNECT, pd = 8, callref = 0x021C, Message Size = 9 bytes
> Cause i = 0x8090 - Normal call clearing
>
> I don't see any SCCP messages to/from the IP Phone between the time the
> media transmission begins and that event occurs.
>
> Am I correct in interpreting that this is the gateway telling callmanager
> that the PSTN has disconnected the call?
>
>
> --
> Ed Leatherman
> Senior Voice Engineer
> West Virginia University
> Telecommunications and Network Operations
> ________________________________________
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> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
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