GOautodial Open Source Omni-channel Contact Center Suite

Please help,
we are unable to make outbound calls, getting error message that all lines are busy,my asterisk logs are given bellow....
Executing [9919999208254@default:1] AGI in new stack == Manager 'sendcron' logged off from 127.0.0.1
-- AGI Script Executing Application: (EXEC) Options: (Set(_CAMPCUST=INBOUND))
-- <Local/8600051@default-00000002;1>AGI Script agi://127.0.0.1:4577/call_log completed, returning 0
-- Executing [9919999208254@default:2] Dial("Local/8600051@default-00000002;1", "DAHDI/g0/17279999208254,,To") in new stack
-- Requested transfer capability: 0x00 - SPEECH
-- Called DAHDI/g0/17279999208254
-- DAHDI/i1/17279999208254-1 is proceeding passing it to Local/8600051@default-00000002;1
Manager 'sendcron' logged on from 127.0.0.1
-- Executing [8600052@default:1] MeetMe("Local/8600052@default-00000003;2", "8600052,F") in new stack
> Channel Local/8600052@default-00000003;1 was answered.
-- Executing [9918588997392@default:1] AGI("Local/8600052@default-00000003;1", "agi://127.0.0.1:4577/call_log") in new stack
Manager 'sendcron' logged off from 127.0.0.1
-- AGI Script Executing Application: (EXEC) Options: (Set(_CAMPCUST=INBOUND))
-- <Local/8600052@default-00000003;1>AGI Script agi://127.0.0.1:4577/call_log completed, returning 0
-- Executing [9918588997392@default:2] Dial("Local/8600052@default-00000003;1", "DAHDI/g0/17278588997392,,To") in new stack
-- Requested transfer capability: 0x00 - SPEECH
-- Called DAHDI/g0/17278588997392
-- DAHDI/i1/17278588997392-2 is proceeding passing it to Local/8600052@default-00000003;1
-- DAHDI/i1/17279999208254-1 is ringing
-- DAHDI/i1/17279999208254-1 is making progress passing it to Local/8600051@default-00000002;1
-- DAHDI/i1/17278588997392-2 is ringing
-- DAHDI/i1/17278588997392-2 is making progress passing it to Local/8600052@default-00000003;1
Manager 'sendcron' logged on from 127.0.0.1
-- Executing [58600051@default:1] MeetMe("Local/58600051@default-00000004;2", "8600051,Fmq") in new stack
> Channel Local/58600051@default-00000004;1 was answered.
-- Executing [8309@default:1] Dial("Local/58600051@default-00000004;1", "SIP/8309") in new stack
[Apr 2 20:12:12] WARNING[26679]: chan_sip.c:5823 create_addr: Purely numeric hostname (8309), and not a peer--rejecting!
[Apr 2 20:12:12] WARNING[26679]: app_dial.c:2345 dial_exec_full: Unable to create channel of type 'SIP' (cause 20 - Subscriber absent)
Everyone is busy/congested at this time (1:0/0/1)
-- Executing [8309@default:2] Monitor("Local/58600051@default-00000004;1", "wav,20180402-201211_9999208254_INBOUND_agent001") in new stack
Manager 'sendcron' logged off from 127.0.0.1
-- Executing [8309@default:3] Wait("Local/58600051@default-00000004;1", "3600") in new stack
Manager 'sendcron' logged on from 127.0.0.1
-- Executing [58600052@default:1] MeetMe("Local/58600052@default-00000005;2", "8600052,Fmq") in new stack
> Channel Local/58600052@default-00000005;1 was answered.
-- Executing [8309@default:1] Dial("Local/58600052@default-00000005;1", "SIP/8309") in new stack
[Apr 2 20:12:12] WARNING²⁶⁶⁸⁹: chan_sip.c:5823 create_addr: Purely numeric hostname (8309), and not a peer--rejecting!
[Apr 2 20:12:12] WARNING²⁶⁶⁸⁹: app_dial.c:2345 dial_exec_full: Unable to create channel of type 'SIP' (cause 20 - Subscriber absent)
-- Span 1: Channel 0/1 got hangup request, cause 38
Everyone is busy/congested at this time (1:0/0/1)
-- DAHDI/i1/17279999208254-1 is circuit-busy
-- Executing [8309@default:2] Monitor("Local/58600052@default-00000005;1", "wav,20180402-201211_8588997392_INBOUND_agent002") in new stack
Manager 'sendcron' logged off from 127.0.0.1
-- Hungup 'DAHDI/i1/17279999208254-1'
Everyone is busy/congested at this time (1:0/1/0)
-- Executing [9919999208254@default:3] Hangup("Local/8600051@default-00000002;1", "") in new stack
Spawn extension (default, 9919999208254, 3) exited non-zero on 'Local/8600051@default-00000002;1'
-- Executing [8309@default:3] Wait("Local/58600052@default-00000005;1", "3600") in new stack
-- Executing [h@default:1] AGI in new stack
-- <Local/8600051@default-00000002;1>AGI Script agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----38-----CONGESTION---------- completed, returning 0
Spawn extension (default, 8600051, 1) exited non-zero on 'Local/8600051@default-00000002;2'
-- Executing [h@default:1] AGI("Local/8600051@default-00000002;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----0---------------") in new stack
-- &lt;Local/8600051@default-00000002;2&gt;AGI Script agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----0--------------- completed, returning 0
-- Span 1: Channel 0/2 got hangup request, cause 38
-- DAHDI/i1/17278588997392-2 is circuit-busy
-- Hungup 'DAHDI/i1/17278588997392-2'
Everyone is busy/congested at this time (1:0/1/0)