User guide

echotraining=yes
context=incoming_pstn
signalling=fxs_ls
channel => 1
context=internal_calls
signalling=fxo_ls
channel => 2
Image 10. The Telecentre uses a TDM400P wildcard to: (1) connect the PBX to the PSTN (FXO module) and (2)
route calls to an analogue phone (FXS module).
8.3 Updating the Dialplan
A new dialplan is needed to:
1. Allow incoming and outgoing calls via the zapata channel 1 (the PSTN)
2. Interconnect the analogue phone connected to the zapata channel 2 so it can place and
receive calls
The extensions.conf file for the second scenario looks as following:
[incoming_pstn]
exten => s,1,Answer()
exten => s,2,DigitTimeout(10)
exten => s,3,ResponseTimeout(20)
exten => s,4,Background(vm-extension)
exten => i,1,Goto(incoming_pstn,s,1)
Page 39 TRICALCAR | www.wilac.net/tricalcar – Version: February 2008