Blank Calls problem in Inbound

[nikeshshk]

HI Vicidial Experts.

I am currently having strange problem in Vicidial Inbound Calls. I see calls landing in the server and after around 2 seconds it is reached to inbound agent and those 2 seconds of call go completely blank. Sometimes it takes more than 45 seconds to reach to inbound agent and that 45 seconds is returned completely blank to the caller. This problem is also seen in the middle of the long duration live call where calls go blank and it sounds like a dead air.

I also would Like to add that outbound predictive dialing is going perfect.

VERSION: 2.2.0-236
BUILD: 100413-2328
Asterisk 1.2.30.4
No extra hardware
Installation Method: No idea 

[nikeshshk]

I found this in asterisk CLI,

Playing 'attention-ringing' (language 'en')
Feb 28 10:04:09 WARNING[4502]: file.c:1045 ast_waitstream: Unexpected control subclass '-1'
-- Remote UNIX connection
-- Remote UNIX connection disconnected
-- Stopped music on hold on SIP/111959-0ab747b8
-- AGI Script agi-VDAD_ALL_inbound.agi completed, returning 0
-- Executing Goto("SIP/111959-0ab747b8", "default|8600051|1") in new stack
-- Goto (default,8600051,1)
-- Executing MeetMe("SIP/111959-0ab747b8", "8600051|F") in new stack
-- Executing Hangup("Local/174*121*109*242*78600051@default-a471,1", "") in new stack


Is that because of this??