UK BT ISDN2e outbound calls not working

Hi all,

I’m having issues with making outbound calls from my new freePBX installation, I have a cologne HFC-S ISDN BRI PCI card (2 channel) and I have managed to make inbound calls from a mobile to a SIP extension but as soon as I try and make a call from the SIP device I get the “all circuits are busy now” message and a cause 1 error in the logs. I have tried setting caller ID values in the sip extension and outbound routes and trunk but I’m not sure whether I am entering them in the right format or if there’s anything missing elsewhere.

Turns out the ISDN card didn’t like asterisk 11, when asterisk 1.8 was installed it sprang into life