OpenVox G400E User Manual page 26

[from-gsm]
exten => s, 1, Answer()
exten => s, n, Dial(SIP/500)
[from-internal]
exten => 100,1,Dial(extra/1/10000)
exten => 100,2,Hangup
exten => 200,1,Dial(extra/3/10000)
exten => 200,2,Hangup
exten => 300,1,Dial(extra/5/10000)
exten => 300,2,Hangup
exten => 400,1,Dial(extra/7/10000)
exten => 400,2,Hangup
The above dial plan realizes that calls from GSM network, Asterisk will
connect it to SIP phone 500 which has registered previously. Once dial
100, Asterisk will connect to 10000 through the first channel and similar
functions with the last three calls. After edition, please run "asterisk -r"
again, and then execute "reload" in the CLI. All above complete
successfully, you are able to make calls.
OpenVox Communication Co. LTD.
http://ArtTel.ru
Figure 13 dial plan show
User Manual
G400E
25
URL: www.openvox.cn