[Asterisk-Users] What is asterisk

[Alejandro Vargas]

2006/3/7, bmw suzuki <chillispot at gmail.com>:
> how can i call a regular PSTN landline phone Via this software through
> internet?Do i need dedicated hardware for this or an ethernet card will do.

To call to PSTN lines there are some alternatives:
1) install FXO hardware in your asterisk server. This allows you to
connect PSTN lines to your PBX.

2) use a FXO to sip converter like Sipura SPA3000. Then, asterisk can
connect to the spa via sip protocol (tcp/ip) and receive and make
regular phone calls.

3) use a sip (or iax) PSTN provider. It will allow you to place calls
and obviously will bill you for it. It is the same case as 2 but you
don't own the PSTN access. Some providers can assign you a PSTN number
to receive incomming calls, other don't have this service. The
atvantage of this is the low prices of international calls.

NOTE: To use regular phones with your asterisk pbx, use FXS cards, FXS
to sip adapters (like SPA2100) or sip phones.

--
Alejandro Vargas