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I'm afraid we do not support EuroISDN under the Network Termination. As you noticed, the S/T interface on this module is designed to connect to user equipment with a straight-through cable. A cross-over cable must be used when connecting to the Telco, however European Telcos use what is referred to as "Warm Start" ISDN lines. With warm start lines, the network deactivates the line during periods of no call activity. In a deactivated state, the subscriber loop equipment may enter a "sleep state" where they consume minimum power. The ATLAS does not support warm start lines so we you cannot run EuroISDN as a Network Term. It will work in the USER TERM, but the ATLAS will not put the BRI line in a deactivated state.
So when you are seeing the link go down, this could be the circuit going into a deactivated state, or it may be resetting because of protocol errors.
For the country code, the ATLAS only supports 1-digit values, so for 31, you can set it for "3".
Thanks for your reply.
I'll have to install an FXO interface card then.
When I connect an ISDN phone, I'm alble to cal a PSTN connected phone, but the line quality is very bad.
Since we haven't heard anything back from you, I'm going to mark this question as "assumed answered". If you have additional questions feel free to continue the discussion.
Sorry for my late reply.
We have ordered a quad FXO to curcumvent this problem.
I might open a new discussion on the ISDN line quality with my desk phone connected.