[cisco-voip] Find specific PRI channel used by a call

[Lelio Fulgenzi]

i think it's much easier if you're running h323, but i'm running MGCP. here's what i've figured out so far, with some help from the list. 

    • grab a "show voip rtp connections detail" 
    • grab a "show voice call status" 
    • from the rtp output, find the call you're looking for based on the IP address of the person with the issue. 
    • grab the dstCallId from that call, convert to hex 
    • find the hex call id in the voice call output 



it would be one heck of a coincidence that the callid numbers are the same but mean different things. and i would be unhappy. 




vgw-annu-a#show voip rtp connections detail 
VoIP RTP active connections : 
No. CallId dstCallId LocalRTP RmtRTP LocalIP RemoteIP 
1 320480 320479 21848 23226 10.104.13.203 10.104.165.28 
callId 320480 (dir=2): called= calling= redirect= loopback=NO 
dest callId 320479: called= calling= redirect= 
1 context 13CD06C0 xmitFunc 8381200 
2 320644 320643 19402 21102 10.104.13.203 10.104.148.250 
callId 320644 (dir=2): called= calling= redirect= loopback=NO 
dest callId 320643: called= calling= redirect= 
1 context 2108D28 xmitFunc 8381200 
3 320646 320645 27818 17814 10.104.13.203 10.104.13.201 
callId 320646 (dir=2): called= calling= redirect= loopback=NO 
dest callId 320645: called= calling= redirect= 
1 context 426B7CA0 xmitFunc 8381200 
4 320652 320651 19400 18924 10.104.13.203 10.104.149.119 
callId 320652 (dir=2): called= calling= redirect= loopback=NO 
dest callId 320651: called= calling= redirect= 
1 context 13E5E824 xmitFunc 8381200 
5 320656 320655 29128 27008 10.104.13.203 10.104.87.40 
callId 320656 (dir=2): called= calling= redirect= loopback=NO 
dest callId 320655: called= calling= redirect= 
1 context 426D39E4 xmitFunc 8381200 
6 320660 320659 19196 17758 10.104.13.203 10.104.13.201 
callId 320660 (dir=2): called= calling= redirect= loopback=NO 
dest callId 320659: called= calling= redirect= 
1 context 13CBEC9C xmitFunc 8381200 
Found 6 active RTP connections 

v gw-annu-a#show voice call status 
CallID CID ccVdb Port Slot/DSP:Ch Called # Codec MLPP Dial-peers 
0x4E3DF 1AE 0x422E9FEC 0/0/0:23.4 0/1:17 * g711ulaw 0/0 
0x4E483 200 0x422E9FEC 0/0/0:23.5 0/1:3 * g711ulaw 0/0 
0x4E485 201 0x0202F1B8 0/0/3:23.1 0/1:7 * g711ulaw 0/0 
0x4E48B 204 0x422E9FEC 0/0/0:23.1 0/1:2 * g711ulaw 0/0 
0x4E48F 206 0x422E9FEC 0/0/0:23.6 0/1:5 * g711ulaw 0/0 
0x4E493 208 0x0202F1B8 0/0/3:23.2 0/1:6 * g711ulaw 0/0 
0x4E497 20A 0x422E9FEC 0/0/0:23.2 0/1:1 * g711ulaw 0/0 
7 active calls found 



--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message -----
From: "Jeff B. Orr" <JOrr at parknationalbank.com> 
To: cisco-voip at puck.nether.net 
Sent: Friday, November 9, 2012 11:31:54 AM 
Subject: [cisco-voip] Find specific PRI channel used by a call 




Does anyone know how to show the specific PRI channel being used by a call? This is a Call Manager 8.5 environment with a 2900 router running (4) PRIs. 



I am trying to track down an issue that appears to be related to one specific B-channel and need to busyout it. 



Thanks! 

Jeff 
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