[Asterisk-Users] Calling Card question

[kelly.griffin at tantella.com]

I am new to the list, so if this question is redundant, please point me in the
right direction for reading.

I want to setup some calling cards for fundraising.  I have ASTCC installed and
working, but I am wondering how things might work once in production.

A customer calls an 800 number (sixTel) and then dials Mexico (voipjet).  This
all stays IP and doesn't tie up phone lines. I've done it and understand it.

A customer calls in on PSTN and then calls Mexico (voipjet).  My PSTN is tied up
until they disconnect, right?

I am wondering how to minimize costs for an 800 number (.02 per minute) and LD
charges (VoIP).  Is there some magic I am missing?

--
Kelly D Griffin
Network Engineer
Tantella Wireless
http://tantella.com
479.273.9992 Voice
479.464.8998 Fax