Client  Sip.conf	Client  Extensation
[general]
udpbindaddr=0.0.0.0
udpbindport=5060
tcpenable=yes
tcpbindaddr=0.0.0.0
disallow=all
allow=g723
allow=g729:40
allow=gsm
dtmfmode=rfc2833
relaxdtmf=yes
srvlookup=yes
transport=udp,tcp

[localGW]
type=peer
host=192.168.105.5
insecure=invite,port
port=5060
nat=yes
qualify=yes
canreinvite=no

[localGW1]
type=peer
host=192.168.105.6
insecure=invite,port
port=5060
nat=yes
qualify=yes
canreinvite=no

[localGW2]
type=peer
host=192.168.105.7
insecure=invite,port
port=5060
nat=yes
qualify=yes
canreinvite=no


	Extension.conf
[general]
static = yes
writeprotect = yes
autofallthrough = yes
clearglobalvars = no
priorityjumping = yes

[icbangla02dp]
;;exten =>_X.,1,Dial(SIP/localGW/${EXTEN});
;;exten =>_X.,2,Hangup();



exten => _X.,1,GotoIf(${DB_EXISTS(provider/next)}?4)
exten => _X.,2,Set(DB(provider/next)=localGW)
exten => _X.,3,Goto(1)
exten => _X.,4,GoSub(${DB_RESULT},1)
exten => _X.,5,Dial(SIP/${DB_RESULT}/${EXTEN})
exten => _X.,6,Hangup



exten => localGW,1,Set(DB(provider/next)=localGW2)
exten => localGW,n,Return

exten => localGW2,1,Set(DB(provider/next)=localGW)
exten => localGW2,n,Return