LINUX, Linux Server | Asterisk for Beginner: IAX Server configuration settings

In the first article on Asterisk, we have seen the Asterisk installation steps and on the environment setup. In this article, we have give the configuration settings for two files iax.conf and extensions.conf which will be used to direct/receive calls from/to iax2 soft clients

File: iax.conf

[general]
bindport = 4569
externip = 99.187.201.22
localnet = 192.168.0.0/255.255.255.0
bindaddr = 0.0.0.0
disallow=all
allow=ulaw
allow=alaw
allow=gsm
allow=ilbc
jitterbuffer=yes
register => NNNNNNNNNN:PPPPPP@201.192.22.232

[voip_provider]
type=friend
username=NNNNNNNNNN
secret=PPPPPP
host=201.192.22.232
context=outgoing

[NNNNNNNNNN]
type=friend
username=NNNNNNNNNN
secret=PPPPPP
host=201.192.22.232
context=incoming
requirecalltoken=auto

[1000]
type=friend
username=1000
host=dynamic
mailbox=1000
secret=1000
context=phones
requirecalltoken=auto

File: extensions.conf

[general]
autofallthrough=yes

[outgoing]
exten => _[1-9].,1,Dial(IAX2/NNNNNNNNNN@201.192.22.232/${EXTEN})
exten => _00.,1,Dial(IAX2/NNNNNNNNNN@201.192.22.232/${EXTEN})
exten => _09XX,1,Dial(IAX2/NNNNNNNNNN@201.192.22.232/${EXTEN})

[internal]
exten => 901,1,VoiceMailMain()
exten => 901,2,Hangup()
exten => 902,1,Meetme(1234,cdM)
exten => 902,2,Hangup()

[incoming]
exten => NNNNNNNNNN,1,Dial(IAX2/1000,20)
exten => NNNNNNNNNN,2,Answer
exten => NNNNNNNNNN,3,Wait(2)
exten => NNNNNNNNNN,4,Set(TIMEOUT(digit)=3)
exten => NNNNNNNNNN,5,Set(TIMEOUT(response)=10)
exten => NNNNNNNNNN,6,Background(conf-usermenu)
exten => 1,1,VoiceMail(1000@internal)
exten => 2,2,MeetMe(1234,cdM)

[phones]
include => internal
include => outgoing

After saving these two files, start up asterisk.
$ asterisk -vvvvgc

The above command will open the asterisk CLI – Command Line Interface