Ok think i'll get comments abt my setup proposal this time?

Asterisk Asterisk Support
1

I repeat :blush:

I have 20 personal computers in LAN with full duplex soundcard, microphone(headset)

I will use this setup for making PC to PC phone calls(same as intercom in office)

in addition I have a Linux server, in which i will be installing asterisk

and

I have Internet Connection - DSL of speed 128kbps

I will be using asterisk for making calls to PSTN numbers(PC to Phone calls-like making outbound calls from each intercom, as well as receive calls at each PC installed with softphone)

so what are the additional hardware components needed?

i figured out,
Digium TDM01B (Asterisk, Linux server, for PSTN connectivity (1 line) )

And on clients, in all Personal Computers-running Windows 2000 professional (which have Softphones like SJPhone,As the softphones can also make PSTN calls)

please any comments about my finding and suggestions?

2

That is all you need. Computer running Asterisk, TDM card foth FXO port and softphone.

Since you are buying TDM card, I sugest you to buy one with FXO and FXS port. It is weary convinient to plug old analog phone and call. Price is 195$.

3

there is no need for any additional card to make outside calls (PSTN)? (not in Linux server running Asterisk)