CUCM 8.5 -- VG224 -- Loud Bell Issue

Jacob Webb · ‎05-16-2013

So as the title states, I am running CUCM 8.5 and am providing analog FXS over a VG224. I have an IP phone with a DN that is shared with an analog device connected to the loud bell. When I call the DN I hear a partial ring from both devices, then the analog device goes off hook and then the call is disconnected. Any advice?

paolo bevilacqua · ‎05-16-2013

The VG may be unable to provide enough ring current for oth devices device. You might try another loud bell, or there are SIP based ones that do not need FXS an all.

Jacob Webb · ‎05-16-2013

Yeah, this loud bell was working with the Mitel phone system that I replaced. There is another loud bell that is having the same issue. If this is a power issue do you think a ring amplifier could fix the issue?

paolo bevilacqua · ‎05-16-2013

You could try that as well, but a different loud bell could cost about the same.

a.gooding · ‎05-16-2013

Whats the config? might be way out there but i remembered i had to configure my dial-peers and set forward digits none to have something SLIGHTLY simliar function.

paolo bevilacqua · ‎05-16-2013

Forward-digits should not have any effect on ring current.

Beside, OP could be using SCCP hence no dial-peers at all.

Jacob Webb · ‎05-16-2013

Here's the config for the port in question:

stcapp supplementary-services

port 2/13

fallback-dn 8072

voice-port 2/13

ren 2

disconnect-ack

no pulse-digit-detection

signal groundStart

no vad

no comfort-noise

timeouts ringing infinity

dial-peer voice 213 pots

service stcapp

port 2/13

I am using SCCP for this gateway. Just to reiterate, the loud bell is sounding a partial ring before it takes the line off hook and then disconnects it. does this still point to a power issue?

Rob Huffman · ‎05-16-2013

Hi Jacob,

I'm curious about the Groundstart portion of the config....

have you tried Loopstart at all?

Cheers!

Rob

"go easy...step lightly...stay free "

- The Clash

paolo bevilacqua · ‎05-16-2013

My friend Rob is, of course, correct. Should be loopstart.

Jacob Webb · ‎05-16-2013

All these items in the config have been added/changed because of testing.