How to make a call to a landline phone?

Question

Java

The issue is that I can't make a call to a desk phone connected to VoIP by sending an Action . The call from the desktop to SIP goes through, but back if it doesn't. Tell me what could be the problem ? used DAHDI, ZAP did not help.

Answer 1

Throw asterisk logs.
asterisk -rvvvvvv
make a call, copy everything that falls into the console and here.