[cisco-voip] FXO Ground-Start Disconnect issues

[Voll, Scott]

Is this a new install?

 

I have only done one site with Ground start and I had a ton of issue
related to wiring.  If you switch the two wires it works as is should.
You also want to make sure the router is grounded well.

 

Scott

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of OConnell, Ryan
Sent: Friday, May 12, 2006 3:18 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] FXO Ground-Start Disconnect issues

 

Hello all,

 

I have a CCME customer, IOS 12.3-11T2. with 6 FXO ground-start lines on
a 2821 platform.  They are using PVDM2-32's and two 4Port FXO cards. The
call flow goes as follows.

 

Incoming call from PSTN, hits fxo port which has a "connection plar" to
a number which calls a script in CUE. From the script if you press "0"
it calls the reception. 

 

All the above works fine. 

 

If the reception hangs up the call and the PSTN party does not right
away, the PSTN party hears a repeating click. If the PSTN then hangs up
and you do a "show voice port summary" it shows as follows

 

 

                                                                IN
OUT

PORT      CH   SIG-TYPE   ADMIN OPER STATUS   STATUS   EC

========= == ============ ===== ==== ======== ======== ==

0/1/0           --     fxo-gs            up    up         idle
on-hook    y

 

Note that the OPER stat shows "up" and the out status shows "on-hook" 

 

Until that OPER status changes to "DORM" every call after the first one
will get answered by this port and the PSTN party will hear the
repeating click in their ear. It takes up to 30-40 seconds for the call
to clear. 

 

If the PSTN party hangs up first the OPER stat will go to "DORM" almost
immediately.

 

 

Any thoughts?

 

Ryan

 

 

Ryan O'Connell 

Senior Consultant CCIE Voice (13382)

 

NexInnovations Inc.

3636 - 23rd Street N.E.

Calgary, AB. T2E 8Z5

 

Desk (403) 291-7293

Cell: (403) 990-1275

Fax: (403) 291-7281

 

Ryan.OConnell at nexinnovations.com

http://www.nexinnovations.com <http://www.nexinnovations.com/> 

 

 

 

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