Thanks for your reply.
Asterisk CLI Output :
== Manager 'sendcron' logged on from 127.0.0.1
-- Executing MeetMe("Local/78600051@default-e762,2", "8600051|q") in new stack
> Channel Local/78600051@default-e762,1 was answered.
-- Executing Answer("Local/78600051@default-e762,1", "") in new stack
-- Executing Monitor("Local/78600051@default-e762,1", "wav|BELL_80125005243_") in new stack
-- Executing Wait("Local/78600051@default-e762,1", "3600") in new stack
== Manager 'sendcron' logged off from 127.0.0.1
-- Executing AGI("SIP/2000-089a88f8", "agi://127.0.0.1:4577/call_log") in new stack
-- AGI Script
agi://127.0.0.1:4577/call_log completed, returning 0
-- Executing Dial("SIP/2000-089a88f8", "SIP/14169448707@netindia|60|tTo") in new stack
-- Called 14169448707@netindia
-- SIP/netindia-089ee4d0 answered SIP/1000-089b9968
-- SIP/netindia-089b1b08 is making progress passing it to SIP/2000-089a88f8
-- Executing MeetMe("Local/78600051@default-ec88,2", "8600051|q") in new stack
> Channel Local/78600051@default-ec88,1 was answered.
-- Executing Answer("Local/78600051@default-ec88,1", "") in new stack
-- Executing Monitor("Local/78600051@default-ec88,1", "wav|BELL_80125005251_") in new stack
-- Executing Wait("Local/78600051@default-ec88,1", "3600") in new stack
-- AGI Script agi-VDADtransfer.agi completed, returning 0
-- Executing MeetMe("SIP/netindia-089fb418", "8600051") in new stack
-- Got SIP response 486 "Busy Here" back from 202.157.87.18
-- SIP/netindia-089e4730 is busy
== Everyone is busy/congested at this time (1:1/0/0)
-- Executing Hangup("SIP/1000-089f74f8", "") in new stack
== Spawn extension (default, 19052370748, 3) exited non-zero on 'SIP/1000-089f74f8'
-- Executing DeadAGI("SIP/1000-089f74f8", "agi://127.0.0.1:4577/call_log") in new stac
# screen -r
There are several suitable screens on:
2257.ASTVDauto (Detached)
2160.ASTVDadapt (Dead ???)
10988.ASTlisten (Dead ???)
2248.ASTupdate (Detached)
2251.ASTsend (Detached)
10991.ASTVDauto (Dead ???)
2263.ASTVDadapt (Detached)
2260.ASTVDremote (Detached)
10935.asterisk (Dead ???)
10982.ASTupdate (Dead ???)
2254.ASTlisten (Detached)
10994.ASTVDremote (Dead ???)
2162.ASTfastlog (Dead ???)
10985.ASTsend (Dead ???)
2118.asterisk (Detached)
2266.ASTfastlog (Detached)
Remove dead screens with 'screen -wipe'.
Type "screen [-d] -r [pid.]tty.host" to resume one of them.