[chopsueyar]

Send/receive faxes to/from a dedicated fax amchine, use an analog modem or coupler, connect multiple extensions to the same line, connect an Asterisk box, play DTMF tones into the receiver and have it dial, pulse dial by toggling the 'hang-up' switch...

That's all I can thing of right now.

[metageek]

>connect an Asterisk box

I'm pretty sure Asterisk can use a cellphone over Bluetooth.

[fauigerzigerk]

True. I was talking personal use only because that's where mobiles have replaced land lines.