Very interesting: I have another provider configured, that was not reachable as well. I disabled the STUN-server (external STUN server), and now the second registration works fine, BUT with the same "error" messages (unreachable etc) as the other provider. But in contrast the number is always reachable!!!

Is there any explanation for this? I just want to understand... ;-) ... and solve it.


Am 15.10.2016 um 10:11 schrieb Andre Gronwald:

[2016-10-15 10:03:22] WARNING[10162]: res_pjsip_outbound_registration.c:761 schedule_retry: No response received from '' on registration attempt to '', retrying in '60' -- Contact pjsip_sipgate/ is now Reachable. RTT: 434.393 msec
  == Endpoint pjsip_sipgate is now Reachable

so it is somewhat clear, why i get a busy, because the endpoint is not reachable. But WHY is the endpoint not reachable?

Regarding the architecture: I have two routers cascaded, that is unfortunately necessary. On the first router (vDSL-access router) I have forwarded nearly everything to the second router (Bintec rj 353), where a port forwarding for relevant ports (sip and pjsip (udp and tcp), rtp (udp)) is configured. IF a call goes through, nearly everything is working (audio only incoming, but that is another issue).

STUN is configured. FreePBX Firewall is disabled.

Kind regards,

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