[Spce-user] Call Failed: 403 Forbidden (incoming) SIP Trunking

Greg Chlopowiec gregch at usip.ca
Wed Mar 21 22:37:04 EDT 2018



Let me check my Rewrite Rule sets again (but after I fix the issue with call
routing verification 500 internal server error) and I will get back to you
with more details. But thank you Matthias for the hint. 


From: Hohl Matthias <matthias.hohl at telematica.at> 
Sent: Wednesday, March 21, 2018 9:27 PM
To: gregch at usip.ca; spce-user at lists.sipwise.com
Subject: AW: [Spce-user] Call Failed: 403 Forbidden (incoming) SIP Trunking




if you get a response code 403 – Forbidden as NAT Reply from your PSTN
peering, then the problem comes from your peering partner.

Ask them, why they reject the call.

403 – Forbidden could be a lot of different things. Most likely, you send
them the wrong number format, and they declined the call, cause it is not
routeable. Did you appear the right rewrite rules for this peering partner?


That it works locally just means that you can call from one domain to
another. For this “allow_out_foreign_domain” is not correlation to your PSTN
NAT  Reply 403 peering problem.


Can you give us more information about your peering?


See ya.



Von: Spce-user <spce-user-bounces at lists.sipwise.com
<mailto:spce-user-bounces at lists.sipwise.com> > Im Auftrag von Greg
Gesendet: Mittwoch, 21. März 2018 23:48
An: spce-user at lists.sipwise.com <mailto:spce-user at lists.sipwise.com> 
Betreff: [Spce-user] Call Failed: 403 Forbidden (incoming) SIP Trunking


Sipwise version 5.5.2


Customer PBX is registered with Sipwise as a regular subscriber in SIP
Trunking domain. When a customer dials PSTN number, they receive following
response from Sipwise - Call Failed: 403 Forbidden. However when the same
customer dials a number that is already registered to some other customer on
Sipwise (different domain within Sipwise) the call goes through. I’m not
sure what I’m forgetting or how do I troubleshoot this problem. Customer PBX
is based on Asterisk.


My setup: 3 domains 


corp.exmaple.com (default domain) – SIP Peering is assigned to this domain


residential.example.com – residential customers are assigned to this domain
(so far everything is working fine)


trunking.example.com – sip trunking customers assigned to this domain. 


In trunking.exmaple.com domain I have also put the checkmark on
“allow_out_foreign_domain”. If the checkmark is not there then the incoming
call to PSTN or some other internal customer on Sipwise gets Call Failed:
403 Forbidden. But is checkmark is there then only calls to PSTN get 403
Forbidden error from trunking domain.



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