Are you sure the ISDN ports are configured as TE ports and not S0 ports? Even though the TE4P card is 4 x TE ports, I seem to recall when setting up the two IPPBX3510s I've installed, there were options to change the port setup.

Yes they are configured as TE ports on the IPPBX2820 that I am using.

Having problems with a a fresh install of a 3510 with the ISDN card. We had a ISDN system before and it packed in so we had to replace they system with something that is more expandable.
We have 3 ISDN2e with 40 MSNs over them.

I configured the system but I can not dial out, i only get connected for 7 secs (like previous postes) and then get disconnected.
Also no inbound calls.

Any help anyone can suggest other than
- making sure the ISDN is TE (according to IP PBX >> PBX System > Phone list it is.
- set all 3 lines to P-P
- enter the global MSN lists.

what else?

Thanks
Chris