Getting CANCEL Status more than usual

[boiken]

Im using a Campaign with RATIO dial method.
Im getting too many CANCEL Statues on the calls
If i dial the numbers manually they are OK,but when they are dialed by the system they get too much CANCEL.
How is it possible ??
This is the CLI :

[Nov 19 11:28:24] == Spawn extension (default, 10941301861, 2) exited non-zero on 'Local/10941301861@default-000007b5;2'
[Nov 19 11:28:24] -- Executing [h@default:1] AGI("Local/10941301861@default-000007b5;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----0-----CANCEL----------") in new stack
[Nov 19 11:28:25] == Spawn extension (default, 10298240830, 2) exited non-zero on 'Local/10298240830@default-000007b6;2'
[Nov 19 11:28:25] -- Executing [h@default:1] AGI("Local/10298240830@default-000007b6;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----0-----CANCEL----------") in new stack
[Nov 19 11:28:25] == Manager 'sendcron' logged off from 127.0.0.1
[Nov 19 11:28:25] == Spawn extension (default, 1015561545, 2) exited non-zero on 'Local/1015561545@default-000007b7;2'
[Nov 19 11:28:25] -- Executing [h@default:1] AGI("Local/1015561545@default-000007b7;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----0-----CANCEL----------") in new stack
[Nov 19 11:28:25] == Manager 'sendcron' logged off from 127.0.0.1
[Nov 19 11:28:26] == Spawn extension (default, 1069043282, 2) exited non-zero on 'Local/1069043282@default-000007b8;2'
[Nov 19 11:28:26] -- Executing [h@default:1] AGI("Local/1069043282@default-000007b8;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----0-----CANCEL----------") in new stack

[DomeDan]

turn on sip debug and check the responses you get
or maybe check the admin tools for reports on sip responses.

try to make a list and put a phone number you got in that list and make the system call you to check what happens to the phone in the other end

[mflorell]

Might also be an increase in post-dial-delay by your carrier causing this. We have seen that before.