[general] static = yes ; These two lines prevent the CLI from overwriting writeprotect = yes ; the config file. Do not remove [bogon-calls] exten => _.,1,Congestion [from-sip] exten => 2000,1,Dial(SIP/2000, 20) exten => 2000,2,Voicemail(u2000) exten => 2000,102,Voicemail(b2000) exten => 2000,103,Hangup exten => 2001,1,Dial(SIP/2001, 20) exten => 2001,2,Voicemail(u2001) exten => 2001,102,Voicemail(b2001) exten => 2001,103,Hangup exten => 2999,1,VoicemailMain(${CALLERIDNUM}) ; Dial plan to use the ext 2998 (SPA3000 PSTN) for all outgoing calls ; Must dial the '9' before using the line exten => _9.1,Dial(SIP/2998/${EXTEN:1})