Failover Dialplan for Asterisk

This Article is describe how you can configure Failover Dialplan for you Asterisk Server. for this need some steps to follow.

Step # 1

In step on need to register Number of SIP Trunks you want to use in Failover routing in our case we are using 3 SIP Trunks for Failover.

vi /etc/asterisk/sip.conf

[SIP1]
type=peer
host=XXX.XXX.XXX.XXX
username=XXX.XXX

fromuser=XXX.XXX
secret=XXX.XXX
canreinvite=no

[SIP2]
type=peer
host=XXX.XXX.XXX.XXX
username=XXX.XXX

fromuser=XXX.XXX
secret=XXX.XXX
canreinvite=no

[SIP3]
type=peer
host=XXX.XXX.XXX.XXX
username=XXX.XXX

fromuser=XXX.XXX
secret=XXX.XXX
canreinvite=no

Step 2

vi /etc/asterisk/extensions.conf

exten => _X.,n,GotoIf($[“${DIALSTATUS}”=”CHANUNAVAIL”|”${DIALSTATUS}”=”CONGESTION”|”${DIALSTATUS}”=”CANCEL”|”${DIALSTTUS}”=”automon”|”${DIALSTATUS}”=”NOANSWER”|”${HANGUPCAUSE}”=”0″|”${HANGUPCAUSE}”=”34”]?failover)
exten => _X.,n(failover),Dial(SIP/${EXTEN:2}@SIP1,,tTo))

exten => _X.,n,GotoIf($[“${DIALSTATUS}”=”CHANUNAVAIL”|”${DIALSTATUS}”=”CONGESTION”|”${DIALSTATUS}”=”CANCEL”|”${DIALSTTUS}”=”automon”|”${DIALSTATUS}”=”NOANSWER”|”${HANGUPCAUSE}”=”0″|”${HANGUPCAUSE}”=”34”]?failover)
exten => _X.,n(failover),Dial(SIP/${EXTEN:2}@SIP2,,tTo))
exten => _X.,n,GotoIf($[“${DIALSTATUS}”=”CHANUNAVAIL”|”${DIALSTATUS}”=”CONGESTION”|”${DIALSTATUS}”=”CANCEL”|”${DIALSTATUS}”=”NOANSWER”|”${DIALSTATUS}”=”automon”|”${HANGUPCAUSE}”=”0″|”${HANGUPCAUSE}”=”34”]?failover2)
exten => _X.,n(failover2),Dial(SIP/${EXTEN:1}@SIP3,,tTo)
exten => _X.,n,Hangup

Press esc then :

wq

reload your asterisk and you have done…..!!!!!