asterisk users - Jul 2004 - Line Display

Hi,

	I am thinking of using * with IP phones instead of a hardware PBX.

The situation is like this. I have 3 different companies having an analogue
line for each of them. I want to make sure that when a call comes in, we
have an indication on the IP phone which line the call comes from. Is this
possible? Do I need IP phones with 3 lines? Are there any IP Phones with at
least 3 lines?

Thanks,
Yiannis.

In newer Grandstream Firmware you can have different dialtones for 
different incoming caller id's. Asterisk can set the callerid to 
anything, based on the incoming line, so you can hear by the ring from 
which line the ring came in.