[asterisk-users] Failed to authenticate device "Ext 110"

[Matthew J. Roth]

asterisk users wrote:
> 
> I'm having a strange problem recently with a Yealink SIP-T28P phone connected
> to Asterisk 11.4.0 via openvpn. It was working fine for months, and now when I
> dial anything from the phone, it shows "Forbidden", and the Asterisk console
> shows: 
> 
> [May 21 10:47:49] NOTICE[28518][C-00000004]: chan_sip.c:25189 handle_request_invite: Failed to authenticate device "Ext 110" < sip:110 at 192.168.6.2 >;tag=1130259112 
> 
> Asterisk 192.168.6.2 
> OpenVPN on router 10.8.0.1 
> Remote Yealink phone 10.8.0.6 
> 
> The remote phone shows as being registered: 
> PBX*CLI> sip show peers 
> Name/username Host Dyn Forcerport ACL Port Status Description 
> 110/110 10.8.0.6 D A 5062 OK (111 ms) Yealink OpenVPN 
> 
> Also, if there is voicemail in the mailbox for 110, the phone's message light
> is lit and it beeps periodically. 
> 
> ...
> 
> Any suggestions on what might be happening here, and how it could be resolved? 


That is quite strange.  Please provide SIP traces of the dialogs between
Asterisk and the phone in the following two scenarios:

  1) Phone registering to Asterisk (presumably successful)
  2) Phone dialing to Asterisk (presumably unsuccessful)

Regards,

Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer