Telfort ISP

Gigaset T300/T500 settings.

In the Gigaset PBX go to "Configuration" - "Lines" - "Lines" and click on: Image Removed New Line

Provider settings:

Give the Line an unique name, insert the Registration user name and Password.

...

   exten => _.,1,Set(channelname=Telfort-incoming)
   exten => _.,2,Set(lineconfigid=1748)
   exten => _.,3,Set(var_to=${SIP_HEADER(To)})
   exten => _.,4,Set(firstcut=${CUT(var_to,:,2)})
   exten => _.,5,Set(secoundcut=${CUT(firstcut,@,1)})
   exten => _.,6,Set(CALLERID(all)=+${CALLERID(number)})
   exten => _.,7,Goto(Telfort-incoming-manuell,${secoundcut},1)

...