I have a site where there is a 3725 acting as a voice gateway with a PRI and an NH-HDA in it with a dsp farm set up. I have an analog modem that is connected to the HDA via an FXS port. The inbound number comes over the PRI and is handed off to the FXS port to connect to the modem bank. When it was first tested the modem worked, now the line just rings. I have checked the router and I can see the connection on the HDA waiting for establishment from the modem but it is never received. The line just rings. Has anyone else experienced this? I am trying to find the easiest way to get the modem back on line. Any help would be great.
If I dial the 4 digit extension of the modem internally it will pick up. I have tested the connection to the block with a butt set and I can dial the extension and the modem will ring and pick up. I can see the call coming in and hitting the FXS port but the modem never picks up when you call in through the gateway. I spoke to a TAC engineer the other day that said he has seen modems freak out coming in gateways with DSP farms configured. I dont know if that applies to my case.
The other thing you could check for is, see if you are getting a different ring on an external call as opposed to an internal one. If you put a analog phone on it you could find out. If the external ring is a short ring-ring, the modem may not recognize it as a ring-in.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
[toc:faq]CUCM Database Replication is an area in which Cisco customers
and partners have asked for more in-depth training in being able to
properly assess a replication problem and potentially resolve an issue
without involving TAC. This document discusse...