Fix Asterisk Bot Routing

My Asterisk-based call bot ran flawlessly for several days, but since this morning every outbound attempt stalls: the SIP account still registers, CLI shows no obvious errors, yet the call never leaves the box. I have already combed through the configuration files, restarted the entire server, and tailed the Asterisk CLI logs without spotting a clear culprit. Nothing changed on the network or the instance itself, and the PBX is a licensed system Yeaster PBX

I need someone who can jump straight into SIP tracing, dial-plan analysis, and any necessary pjsip/chan_sip tweaks to bring call origination back online. SSH access and full root privileges are ready; I can also provide packet captures on request.

Deliverables:
• Identify the root cause of the failed call flow.
• Apply or guide me through the fix so calls complete end-to-end.
• Supply a brief write-up of what broke and the commands or config blocks changed, so I can avoid a repeat.

Asterisk expertise is essential; familiarity with custom PBX deployments and real-time debugging tools like sngrep or Wireshark will help you wrap this up quickly.