Solved: Analog modem and VoIP

brobinson · ‎06-23-2008

Hello -

We have an analog modem that we need to connect to our CCM 6.x solution. I read the ATA 186s don't support it. Do we need to use an FXS card in the router instead?

paolo bevilacqua · ‎06-23-2008

With ATA, the modem would work up to moderate speeds only, and require a perfect IP network.

An FXS port in the router doesn't have any limitation and is a much better solution.

Hope this helps, please rate post if it does!

View solution in original post

paolo bevilacqua · ‎06-23-2008

With ATA, the modem would work up to moderate speeds only, and require a perfect IP network.

An FXS port in the router doesn't have any limitation and is a much better solution.

Hope this helps, please rate post if it does!

brobinson · ‎06-25-2008

The modem speed is at 9600. Is that slow enough? It still does not work.

paolo bevilacqua · ‎06-26-2008

Do you have E1 ot T1 in the router? If so you might be missing the necessary "network-clock-select" command.

brobinson · ‎06-26-2008

Yup, it's a PRI and it has that command. It seems that when they try and dialin to the modem it just automatically hangs up.

paolo bevilacqua · ‎06-26-2008

Check anyway "show controllers T1" for any slips. If none, search "troubleshooting ata fax" and configure the ata accordingly to the document.

brobinson · ‎06-26-2008

Thanks!