[Asterisk-Users] Really Cheap way to connect 2 PBXs

[Marcelo Marsson]

Hello people.
I've been thinking about a really cheap way to connect 2 PBX centrals i
got, using 2 * boxes , 2 x100p cards and my 256 DSL connection to the
Internet, I'm planning on connect the x100p cards on each establish a
iax connection between them, so for example, when i dial 234 (line would
ring on the x100p interface) i would get a tone signal from the other
PBX... I would like to know if that would work and if anybody had
already done it... of course i would need to do some QoS but i just
wanna know if
 that could be done...
 i hope i could make myself clear...
 Thanks in Advance...