In order for a person to try to call into the local network to locate Sergio by first dialing to his two phones located in room 110H and 110J to ring simultaneously for 15 seconds; and afterwards, the phone call will be forward directly to Sergio Chacon’s cell phone we had to configure the Asterisk SIP server’s extensions.conf configuration file.

extensions.conf

[default]

exten => _s,1,NoOp(Home)
exten => _s,2,Dial(SIP/6318&IAX2/6318&SIP/6300&IAX2/6300&SIP/6319&IAX2/6319&SIP/6013&IAX2/6013,10,r)
exten => _s,3, Dial(SIP/12816502328@proxy01.sipphone.com,5,r)
exten => _s,4,VoiceMail(u$6319)
exten => _s,5,Hangup