Help Outgoing using CISCO SPA8800 doesn't work

i have tried editing sip.conf and extensions.conf files all day but i cannot figure out how the outgoing works. Incoming works alright but outgoing i get this error

[2014-01-21 13:39:11] VERBOSE[1471][C-00000019] netsock2.c: == Using SIP RTP TOS bits 184
[2014-01-21 13:39:11] VERBOSE[1471][C-00000019] netsock2.c: == Using SIP RTP CoS mark 5
[2014-01-21 13:39:11] VERBOSE[1993][C-00000019] pbx.c: – Executing [[email protected]:1] Dial(“SIP/139-00000027”, “SIP/[email protected],60,r”) in new stack
[2014-01-21 13:39:11] VERBOSE[1993][C-00000019] netsock2.c: == Using SIP RTP TOS bits 184
[2014-01-21 13:39:11] VERBOSE[1993][C-00000019] netsock2.c: == Using SIP RTP CoS mark 5
[2014-01-21 13:39:11] VERBOSE[1993][C-00000019] app_dial.c: – Called SIP/[email protected]
[2014-01-21 13:39:12] VERBOSE[1993][C-00000019] app_dial.c: == Everyone is busy/congested at this time (1:0/0/1)
[2014-01-21 13:39:12] VERBOSE[1993][C-00000019] pbx.c: – Auto fallthrough, channel ‘SIP/139-00000027’ status is ‘CHANUNAVAIL’
[2014-01-21 13:39:12] WARNING[1993][C-00000019] channel.c: Prodding channel ‘SIP/139-00000027’ failed

PLEASE HELP

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