Bug#386052: zaptel-source: Cannot initiate a call to BRI

[Jens Wilke]

Please try:
# pri debug span 1
and provide the output.

Alternatively try to load the module with:
modprobe vzaphfc force_l1_up=1

When starting asterisk you should see:
== Primary D-Channel on span 1 up
and maybe:
== Restart on requested on entire span 1

If this is not appearing d-channel layer 2 is not coming up.
Try the following:
# pri intense debug span 1
Then unplug and plug the ISDN cable, so we see the initial handshaking.

;jw