Which PBXs have you tested integration with?

3Com
Alcatel (with Mode codes enabled on PBX and current firmware in FaxFinder)
Altigen
Definity
IP Office
Magix (with V/M Mode codes enabled on PBX and current firmware in FaxFinder)
Mitel
NEC (Aspire - prior customer set NEC to pass mode codes to match Alcatel PBX codes)
Panasonic
Shoretel
Siemens (HiPath model 150E)
Televantage