Everyone is busy/congested at this time

Hello
I am newbie as far as asterisk is concerned facing this problem.
I am trying to communicate between two asterisk server, via SIP trunks
both servers have registered to each other.
when i dial from one to the other i got following log message:

== Manager ‘sendcron’ logged on from 127.0.0.1
– Executing MeetMe(“Local/8600051@default-60d7,2”, “8600051”) in new stack
> Channel Local/8600051@default-60d7,1 was answered.
== Parsing ‘/etc/asterisk/meetme.conf’: Found
– Created MeetMe conference 1023 for conference ‘8600051’
– Playing ‘conf-onlyperson’ (language ‘en’)
– Executing Answer(“Local/8600051@default-60d7,1”, “”) in new stack
– Executing Dial(“Local/8600051@default-60d7,1”, “SIP/VICItest:test@192.168.1.32:5070/999999999999||tTo”) in new stack
– Called VICItest:test@192.168.1.32:5070/999999999999
– SIP/192.168.1.32:5070/999999999999-009c8380 is circuit-busy
== Everyone is busy/congested at this time (1:0/1/0)
== Manager ‘sendcron’ logged off from 127.0.0.1
== Parsing ‘/etc/asterisk/manager.conf’: Found
== Manager ‘sendcron’ logged on from 127.0.0.1
== Parsing ‘/etc/asterisk/manager.conf’: Found
== Manager ‘sendcron’ logged on from 127.0.0.1
== Manager ‘sendcron’ logged off from 127.0.0.1
== Manager ‘sendcron’ logged off from 127.0.0.1
– Timeout on Local/8600051@default-60d7,1
== CDR updated on Local/8600051@default-60d7,1
– Executing Goto(“Local/8600051@default-60d7,1”, “#|1”) in new stack
– Goto (default,#,1)
– Executing Playback(“Local/8600051@default-60d7,1”, “invalid”) in new stack
– Playing ‘invalid’ (language ‘en’)
– Executing Hangup(“Local/8600051@default-60d7,1”, “”) in new stack
== Spawn extension (default, #, 2) exited non-zero on ‘Local/8600051@default-60d7,1’
– Executing DeadAGI(“Local/8600051@default-60d7,1”, “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 DeadAGI(“Local/8600051@default-60d7,1”, “agi://127.0.0.1:4577/VD_hangup–HVcauses–PRI-----NODEBUG-----1-----CONGESTION----------)”) in new stack
– AGI Script agi://127.0.0.1:4577/VD_hangup–HVcause … ----------) completed, returning 0
– Hungup ‘Zap/pseudo-366671861’
== Spawn extension (default, 8600051, 1) exited non-zero on ‘Local/8600051@default-60d7,2’
– Executing DeadAGI(“Local/8600051@default-60d7,2”, “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 DeadAGI(“Local/8600051@default-60d7,2”, “agi://127.0.0.1:4577/VD_hangup–HVcauses–PRI-----NODEBUG-----0---------------)”) in new stack
– AGI Script agi://127.0.0.1:4577/VD_hangup–HVcause … ----------) completed, returning 0

my test server is 1.65 and my client machine is 1.32
sip.conf (1.32)

[general]
context=default ; Default context for incoming calls
allowguest=yes ; Allow or reject guest calls (default is yes)
;allowoverlap=no ; Disable overlap dialing support. (Default is yes)
bindport=5070 ; UDP Port to bind to (SIP standard port is 5060)
bindaddr=192.168.1.32 ; IP address to bind to (0.0.0.0 binds to all)
;bindaddr=0.0.0.0
srvlookup=no ; Enable DNS SRV lookups on outbound calls
registertimeout=3600 ; retry registration calls every 20 seconds (default)
canreinvite=no ; Asterisk by default tries to redirect the
disallow = all
;allow = g729
allow = ulaw
allow = gsm
;insecure=no
dtmfmode=rfc2833
videosupport=yes
rtptimeout=0 ; 0 means no trp timeout

register => VICIserver:test@192.168.1.65/999999999999;VICIserver
auth = VICIserver:test@192.168.1.65

[VICItest]
type=friend
;accountcode=
username=VICItest
authuser=VICItest
secret=test
context=default
auth=plaintext
insecure=very
host=dynamic
;host=192.168.1.65
;port=5060
permit=0.0.0.0/0.0.0.0
;secret=1234
disallow=all
allow =gsm
allow = ulaw
allow=g729

sip.conf(1.65)

register => VICItest:test@192.168.1.32:5070/999999999999;VICItest
auth = VICItest:test@192.168.1.32:5070

[VICIserver]
type=friend
;accountcode=
context=default
username=VICIserver
authuser=VICIserver
secret=test
insecure=very
auth=plaintext
;host=192.168.1.32
host=dynamic
;port=5070
;permit=0.0.0.0/0.0.0.0
;secret=1234
disallow=all
allow=alaw
allow=g729
allow=gsm

extention.conf(1.32)
exten => _999XXXXXX1,1,Answer
exten => _999XXXXXX1,2,Wait(2)
exten => _999XXXXXX1,3,Playback(beep)
exten => _999XXXXXX1,4,Hangup

exten => _999XXXX112,1,Wait(8)
exten => _999XXXX112,2,Answer
exten => _999XXXX112,3,Playback(demo-instruct)
exten => _999XXXX112,4,Playback(demo-instruct)
exten => _999XXXX112,5,Hangup

exten => _999XXXXXX2,1,Wait(8)
exten => _999XXXXXX2,2,Answer
exten => _999XXXXXX2,3,Playback(demo-instruct)
exten => _999XXXXXX2,4,Hangup

exten => _999XXXXXX3,1,SetVar(PRI_CAUSE=1)
exten => _999XXXXXX3,2,Hangup

exten => _999XXXXXX4,1,SetVar(PRI_CAUSE=27)
exten => _999XXXXXX4,2,Hangup
exten => _999XXXXXX5,1,Wait(60)
exten => _999XXXXXX5,2,Hangup

exten => _999XXXXXX6,1,Wait(10)
exten => _999XXXXXX6,2,Answer
exten => _999XXXXXX6,3,Playback(demo-instruct)
exten => _999XXXXXX6,4,Hangup

exten => _999XXXXXX7,1,Wait(12)
exten => _999XXXXXX7,2,Answer
exten => _999XXXXXX7,3,Playback(demo-enterkeywords)
exten => _999XXXXXX7,4,Hangup

exten => _999XXXXXX8,1,SetVar(PRI_CAUSE=17)
exten => _999XXXXXX8,2,Hangup

exten => _999XXXXXX9,1,Wait(6)
exten => _999XXXXXX9,2,Answer
exten => _999XXXXXX9,3,Playback(demo-abouttotry)
exten => _999XXXXXX9,4,Hangup

exten => _999XXXXXX0,1,Wait(5)
exten => _999XXXXXX0,2,Answer
exten => _999XXXXXX0,3,Playback(vm-goodbye)
exten => _999XXXXXX0,4,Hangup

exten => 999999999999,1,Answer
exten => 999999999999,2,Playback(conf)
exten => 999999999999,3,Playback(conf)
exten => 999999999999,4,Playback(conf)
exten => 999999999999,5,Playback(conf)
exten => 999999999999,6,Playback(conf)
exten => 999999999999,7,Playback(conf)
exten => 999999999999,8,Playback(conf)
exten => 999999999999,9,Playback(conf)
exten => 999999999999,10,Playback(conf)
exten => 999999999999,11,Playback(conf)
exten => 999999999999,12,Playback(conf)
exten => 999999999999,13,Playback(conf)
exten => 999999999999,14,Hangup

extention.conf(1.65)

exten => _91999NXXXXXX,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _91999NXXXXXX,2,Dial(${TESTTRUNK}/${EXTEN:2},tTo)
exten => _91999NXXXXXX,3,Hangup

exten => 999999999999,1,Answer
exten => 999999999999,2,Dial(${TESTSIPTRUNK}/${EXTEN},tTo)
exten => 999999999999,2,Hangup

i am trying to call 99999XXXXX from server 1.65 to 1.32.
can anyone help regarding what configuration mistake have i done?