[asterisk-users] setting up a IP based voip carrier account

[Alex Balashov]

James Mutuku wrote:
> Hellos,
> 
> My voip carrier has assigned me a IP based account...where they only 
> give me the IP to call through. I have setup the dial plan
> 
> exten => _7XXX.,1,Answer()
> exten => _7XXX.,2,vmauthenticate(${CALLERID(number)})
> exten => _7XXX.,3,Dial(SIP/${EXTEN:1}@Y.Y.Y.Y)
> exten => _7XXX.,4,Hungup()
> 
> 
> Where Y.Y.Y.Y is the assigned IP. After Dialing I asterisk logs the error
> 
> SIP/Y.Y.Y.Y-35dc is circuit-busy
> 
> Are there any settings I am leaving out?

No;  the "circuit-busy" error is due to negative SIP feedback that 
peer is sending you;  perhaps a 404 Not Found or a 503 Service 
Unavailable or something of the sort.  To find out what the essence of 
the problem is, you may need to turn up verbosity (core set verbose 
60) on the CLI.  If that doesn't divine it, do a packet capture:

    tcpdump -i ethX -A -s 0 -n "udp port 5060 and host Y.Y.Y.Y"

Some consider it good practice to add a SIP peer in sip.conf for that 
endpoint regardless.  You don't have to provide any authentication 
information (username, secret) in the peer definition.  This will also 
be necessary - not optional - if you plan to accept incoming calls 
from the same carrier, so that you can set it not to challenge the 
carrier for authentication credentials:

    insecure=port,invite

and to route the calls into a particular dial plan context:

    context=incoming-calls

-- Alex

-- 
Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671