We got a Coinvox Euro, to turn into a payphone and voip-toy. Talks DTMF has an internal call-cost table.
- call other spaces (voip)
- listen to music/radio - Music On Hold
We now have one Fritzbox 7170 setup to connect to the coinvox and dial-out via a voip-account.
Armboard / rpi
with some added electronics it's doable to turn an arm-devboard into a FSX, something that can interface with the phone and act as a VOIP-bridge
VOIP Adapter + pulse->DTMF adapter
There are some simple setups and adapters to convert pulse-dialing to DTMF
Quatrovox + ISDN card
Old home-phone setups like quatrovox handle pulse-dialing and will talk to ISDN.
- Manual: File:Coinvox.pdf