Unable to make calls to a specific number

Hi we are unable to make calls to toll free number and 96X series number using our pri line , i receive an error saying “all circuits are busy” and Here is the output of the log files

2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:21] GotoIf(“SIP/810-0000000c”, “0?customtrunk”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:22] Dial(“SIP/810-0000000c”, “DAHDI/g0/9632145678,Tt”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] sig_pri.c: – Requested transfer capability: 0x00 - SPEECH
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] app_dial.c: – Called DAHDI/g0/9632145678
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] app_dial.c: – DAHDI/i1/9632145678-e is proceeding passing it to SIP/810-0000000c
[2015-05-25 17:26:16] VERBOSE[3571][C-0000000f] sig_pri.c: – Span 1: Channel 0/1 got hangup request, cause 3
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] chan_dahdi.c: – Hungup ‘DAHDI/i1/9632145678-e’
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] app_dial.c: == Everyone is busy/congested at this time (1:0/0/1)
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:23] NoOp(“SIP/810-0000000c”, “Dial failed for some reason with DIALSTATUS = CHANUNAVAIL and HANGUPCAUSE = 3”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:24] GotoIf(“SIP/810-0000000c”, “0?continue,1:s-CHANUNAVAIL,1”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Goto (macro-dialout-trunk,s-CHANUNAVAIL,1)
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:1] Set(“SIP/810-0000000c”, “RC=3”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:2] Goto(“SIP/810-0000000c”, “3,1”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Goto (macro-dialout-trunk,3,1)
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:1] Goto(“SIP/810-0000000c”, “continue,1”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Goto (macro-dialout-trunk,continue,1)
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:1] NoOp(“SIP/810-0000000c”, “TRUNK Dial failed due to CHANUNAVAIL HANGUPCAUSE: 3 - failing through to other trunks”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:2] Set(“SIP/810-0000000c”, “CALLERID(number)=810”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:7] Macro(“SIP/810-0000000c”, “outisbusy,”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:1] Progress(“SIP/810-0000000c”, “”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:2] GotoIf(“SIP/810-0000000c”, “0?emergency,1”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:3] GotoIf(“SIP/810-0000000c”, “0?intracompany,1”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:4] Playback(“SIP/810-0000000c”, “all-circuits-busy-now&pls-try-call-later, noanswer”) in new stack
[2015-05-25 17:26:16] VERBOSE[11688][C-0000000f] file.c: – <SIP/810-0000000c> Playing ‘all-circuits-busy-now.ulaw’ (language ‘en’)
[2015-05-25 17:26:18] VERBOSE[11688][C-0000000f] file.c: – <SIP/810-0000000c> Playing ‘pls-try-call-later.ulaw’ (language ‘en’)
[2015-05-25 17:26:20] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:5] Congestion(“SIP/810-0000000c”, “20”) in new stack
[2015-05-25 17:26:20] WARNING[11688][C-0000000f] channel.c: Prodding channel ‘SIP/810-0000000c’ failed
[2015-05-25 17:26:20] VERBOSE[11688][C-0000000f] app_macro.c: == Spawn extension (macro-outisbusy, s, 5) exited non-zero on ‘SIP/810-0000000c’ in macro ‘outisbusy’
[2015-05-25 17:26:20] VERBOSE[11688][C-0000000f] pbx.c: == Spawn extension (from-internal, 09632888220, 7) exited non-zero on ‘SIP/810-0000000c’
[2015-05-25 17:26:20] VERBOSE[11688][C-0000000f] pbx.c: – Executing [[email protected]:1] Hangup(“SIP/810-0000000c”, “”) in new stack
[2015-05-25 17:26:20] VERBOSE[11688][C-0000000f] pbx.c: == Spawn extension (from-internal, h, 1) exited non-zero on ‘SIP/810-0000000c’

Your carrier can’t or won’t route such calls, cause 3