hope anyone can help. Have recently deployed a Callmanager express 2851 router running CME 4.2 with IOS XW1.
I am having issue with a number of ATA`a that are connected to a modem and a PDQ (Credit card swipe machine). The ATA`s work ok for fax machines.
On the same site I have exactly the same type of modem and exactly the same type of PDQ connected into FXS ports in the 2851 router and they work fine.
However, in one of the remote buildings connected via Fibre I have had to use ATA`s.
The ATA attached modem and the ATA attached PDQ seem to have to dial a number of times before they connect, this can take 1 minute or can take 5-10 minutes to connect.
If I connect them to a traditional PSTN line they connect straight away, unfortunatley the PSTN line is being removed as the new VOIP deployment runs over 16 Channels of an E1 PRI.
If I connect an analogue handset to the ATA I can make and receive calls ok.
When I debug (debug isdn q931) I can see the call setup, but on the failed attempts it only remains connected for 29 secs approx.
Is there anything I am missing here?