NO JOY T1 outbound lines randomly stop working while inbound works.

[ghurty]

T1 outbound lines randomly stop working while inbound works.
I get the following error:

[2015-06-16 05:54:39] VERBOSE[22462][C-0000102e] app_dial.c:    -- Called DAHDI/g0/1XXXXXXXX
[2015-06-16 05:54:39] VERBOSE[2398][C-0000102e] sig_pri.c:    -- Span 1: Channel 0/1 got hangup, cause 44
[2015-06-16 05:54:39] VERBOSE[2398][C-0000102e] sig_pri.c:    -- Span 1: Forcing restart of channel 0/1 since channel reported in use
[2015-06-16 05:54:39] VERBOSE[22462][C-0000102e] chan_dahdi.c:    -- Hungup 'DAHDI/i1/16094566741-229'
[2015-06-16 05:54:39] VERBOSE[22462][C-0000102e] app_dial.c:  == Everyone is busy/congested at this time (1:0/0/1)
[2015-06-16 05:54:39] VERBOSE[22462][C-0000102e] pbx.c:    -- Executing [s@macro-dialout-trunk:23] NoOp("DAHDI/78-2", "Dial failed for some reason with DIALSTATUS = CHANUNAVAIL and HANGUPCAUSE = 44") in new stack
[2015-06-16 05:54:39] VERBOSE[22462][C-0000102e] pbx.c:    -- Executing [s@macro-dialout-trunk:24] GotoIf("DAHDI/78-2", "0?continue,1:s-CHANUNAVAIL,1") in new stack

I wonder if it has anything to do with the timing issue that the provider told me about. However, I tried playing around with the timing settings and they say they still see issues.