I want to setup two Asterisk servers via the Internet. At bothe ends, FXO cards will be installed so users can call the other end via PSTN services.
A point A caller will call the point A PBX (via a PSTN connection), dial an access number and will get attached to Point B PBX. Another access number is dialed and will give the point A caller a point B (PSTN) dial-tone.
Is this possible without the two PBX linked via a VoIP (SIP or IAX compatible) service provider? Has anyone tried this?