Problems with some extensions

Dear All,

We have some remote users which are using extensions from our Asterisk. Everithing was working fine, but few days ago we got some problems: those users can’t call anyware, but can recive incoming calls. When thay tried to call, thay get busy tone and in Asterisk I can’t see any log. Also I found that periodicaly in console message:

Aug 23 05:00:59 NOTICE[1569]: chan_sip.c:7708 handle_request: Registration from ‘“XXX” sip:74@xxx.xxx.xxx.xxx’ failed for ‘xxx.xxx.xxx.xxx

Can somebody help?

Do “sip debug” on your cli, so we can tell what’s wrong with the registration.

12 headers, 0 lines
Using latest request as basis request
Sending to 192.168.1.106 : 5060 (NAT)
Transmitting (NAT):
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.1.106:5060;branch=z9hG4bK-4a4b2dfc;received=xxx.xxx.xxx.xxx;rport=5060
From: “George” sip:74@xxx.xxx.xxx.xxx;tag=db67cc977e967e42o0
To: “George” sip:74@xxx.xxx.xxx.xxx;tag=as62614571
Call-ID: 167b5be4-3b1ce992@192.168.1.106
CSeq: 2025 REGISTER
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER
Contact: sip:74@xxx.xxx.xxx.xxx
Content-Length: 0

to 66.115.120.93:5060
Transmitting (NAT):
SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 192.168.1.106:5060;branch=z9hG4bK-4a4b2dfc;received=xxx.xxx.xxx.xxx;rport=5060
From: “George” sip:74@xxx.xxx.xxx.xxx;tag=db67cc977e967e42o0
To: “George” sip:74@xxx.xxx.xxx.xxx;tag=as62614571
Call-ID: 167b5be4-3b1ce992@192.168.1.106
CSeq: 2025 REGISTER
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER
Contact: sip:74@xxx.xxx.xxx.xxx
Content-Length: 0

to 66.115.120.93:5060
Aug 25 07:49:41 NOTICE[1569]: chan_sip.c:7708 handle_request: Registration from ‘“George” sip:74@xxx.xxx.xxx.xxx’ failed for 'xxx.xxx.xxx.xxx
Scheduling destruction of call ‘167b5be4-3b1ce992@192.168.1.106’ in 15000 ms

SIP/2.0 403 Forbidden

The response indicates that the SIP proxy server has the request but will not provide
service.
Contact your SIP service provider to find out why your registration was denied.