billing.py

Works with Freeswitch and listens on events CHANNEL_BRIDGE and CHANNEL_UNBRIDGE and calculates telephone fee based on minutes. It send SIP messages to a Patton media gateway so it can send 16khz pulses to a pay phone. Events are logged to syslog.

This was a quick-and-dirty solution for a non-profit organization, so some items are hard coded.

Important Variables

• send_mail=1 # if you want to get e-mails
• smtp_from="[email protected]"
• smtp_to="[email protected]"
• smtp_relay="localhost"
• aoc_amount="0.01" # payment unit = one 16khz pulse
• real_amount="0.05" # must match pay phone configuration
• ip = "192.168.106.3" # ip address of Patton media gateway
• host="127.0.0.1" # freeswitch server
• port="8021" # freeswitch port
• sip_from=="592" # SIP id of Patton
• function call: sendAOC("D",con,key,"192.168.106.7"... # IP address of Patton

Look out for regex with +49... which matches for numbers in Germany. Outside Germany you probably want to change this.

ESL

This is a library provided by Freeswitch