SIP/2.0 480 Temporarily Not Available

Asterisk Asterisk Support
1

Hello.
Randomly I get 480 code in my asterisk log:

---
[Nov 19 12:03:50] VERBOSE[2780] chan_sip.c: 
<--- SIP read from UDP:194.30.0.111:5060 --->
SIP/2.0 200 Alive
Via: SIP/2.0/UDP 10.100.1.2:5060;branch=z9hG4bK5f2e55ab;rport=5060;received=188.76.235.187
From: "Unknown" <sip:****@10.100.1.2>;tag=as5bcc1f71
To: <sip:sarevoz.com>;tag=cb72197effc0f8f51b22b97e38a16b35.e0cf
Call-ID: 4923da1b0554ce390f6cd6bf51916ec3@10.100.1.2:5060
CSeq: 102 OPTIONS
Server: kamailio (3.2.2 (x86_64/linux))
Content-Length: 0

<------------->
[Nov 19 12:03:50] VERBOSE[2780] chan_sip.c: --- (8 headers 0 lines) ---
[Nov 19 12:03:50] VERBOSE[2780] chan_sip.c: Really destroying SIP dialog '4923da1b0554ce390f6cd6bf51916ec3@10.100.1.2:5060' Method: OPTIONS
[Nov 19 12:04:12] VERBOSE[2780] chan_sip.c: 
<--- SIP read from UDP:194.30.0.111:5060 --->


SIP/2.0 480 Temporarily Not Available


Via: SIP/2.0/UDP 10.100.1.2:5060;received=188.76.235.187;branch=z9hG4bK648c2615;rport=5060
From: "0034********" <sip:****@sarevoz.com>;tag=as1ce0fff9
To: <sip:00346********@sarevoz.com>;tag=82F695F4-1716
Date: Tue, 19 Nov 2013 11:03:09 GMT
Call-ID: 4d1b9604452d9fb075e8a15666540904@sarevoz.com
Server: Cisco-SIPGateway/IOS-12.x
CSeq: 103 INVITE
Allow-Events: telephone-event
Reason: Q.850;cause=19
Content-Length: 0

<------------->
[Nov 19 12:04:12] VERBOSE[2780] chan_sip.c: --- (11 headers 0 lines) ---
[Nov 19 12:04:12] VERBOSE[2780] chan_sip.c:     -- Got SIP response 480 "Temporarily Not Available" back from 194.30.0.111:5060
[Nov 19 12:04:12] VERBOSE[2780] chan_sip.c: set_destination: Parsing <sip:194.30.0.111;lr;ftag=as1ce0fff9;nat=yes> for address/port to send to
[Nov 19 12:04:12] VERBOSE[2780] chan_sip.c: set_destination: set destination to 194.30.0.111:5060
[Nov 19 12:04:12] VERBOSE[2780] chan_sip.c: Transmitting (NAT) to 194.30.0.111:5060:
ACK sip:346*********@194.30.0.116:5060 SIP/2.0
Via: SIP/2.0/UDP 10.100.1.2:5060;branch=z9hG4bK648c2615;rport
Route: <sip:194.30.0.111;lr;ftag=as1ce0fff9;nat=yes>
Max-Forwards: 70

From: "0034********" <sip:*****@sarevoz.com>;tag=as1ce0fff9
To: <sip:00346**********@sarevoz.com>;tag=82F695F4-1716
Contact: <sip:****@10.100.1.2:5060>
Call-ID: 4d1b9604452d9fb075e8a15666540904@sarevoz.com
CSeq: 103 ACK
User-Agent: FPBX-2.8.1(1.8.20.0)
Content-Length: 0

My trunk config:

host=sarevoz.com username=**** secret=***** type=peer fromdomain=sarevoz.com fromuser=**** authname=***** qualify=yes insecure=very sendrpid=yes nat=yes

Anybody can help me… Im not sure if its asterisk configuration problem or my sip trunk provider…
Thanks

2

The problem is on the far side of the Cisco.