ISDN tip wanted

Surely it can't be that, as the call has been answered.

Well its worth a try :slight_smile:

And it was positive advice, rather than my not offering anything :slight_smile:
What is the signalling doing at the other end ?
What I'm not sure about is what the different call references are about ?
The setup has a call ref of 0x01
But the Call Processing has 0x81
The far end then sends a disconnect

Neil J. McRae wrote:

Maybe Niel's right and it's a 56K with embedded signalling vs. 64K
with separate signalling.
Or maybe it's the parity. Afer all, 0x81 is 7bit even :slight_smile: