Hi guys.
I do not understand, why this is happening, please help…
In my test environment my ITSP makes 2 concurrent lines available for me. In a specific situation I get this 403 error mentioned in the subject and I do not understand why.
Here is, when this happens:
I have an active inbound call (number_caller) which is handled and hold via IVR. IVR has an option to forward the call via Dial() to another national Number (number_callee). When I choose this option and Asterisk is dialing, I get the messages below.
In my understanding, in this scenario I only used 2 concurrent lines. Am I wrong?
Thanks.
;;;;; -- Called PJSIP/xxxxxxxx@itsp_endpoint
;;;;; == Everyone is busy/congested at this time (1:0/0/1)
;;;;; -- Auto fallthrough, channel 'PJSIP/itsp_endpoint-0000002f' status is 'CHANUNAVAIL'
<--- Received SIP response (626 bytes) from TLS:ip.my.itsp.tld:5061 --->
SIP/2.0 403 Maximum parallel calls exceeded
Via: SIP/2.0/TLS 192.168.x.y:5061;rport=44453;branch=z9hG4bKPj602317f7-cae4-4527-8919-05dab8431951;alias;received=my.public.ip.address
From: <sip:number_caller@sip.itsp.tld>;tag=a3cc46f0-a51e-4e3d-ba08-de6e067ad791
To: <sip:number_callee@sip.itsp.tld>;tag=f3067022b00c564156251ba2f28f331f-3321
Call-ID: 9ff93547-7cd1-40e6-bbd7-e0e207bf28f7
CSeq: 11446 INVITE
P-NGCP-Caller-Info: <sip:number_caller@sip.itsp.de>;ip=ip.my.itsp.tld;port=5060
P-NGCP-Callee-Info: <sip:number_callee@212.172.97.119>;ip=212.172.97.119;port=5060
Server: Sipwise NGCP Proxy 3.X
Content-Length: 0