Home about us products support contact

 
 
     

call management & billing

From basic call loggers to high-end centralized, multi-site call management systems and carrier call billing systems.

anti-toll fraud & voice security

24-hour, automatic, continuous protection from phone system hacking and phreaking without the need for monitoring & alerts.

hotel/motel reservation systems

Fully-integrated, fully-featured PMS for hotels & motels including automatic management of online reservations.

     

 

M O R E

   

M O R E

   

M O R E

 

 

 

Callista & Control Phreak are registered trademarks of The Callista Group Limited.  Copyright    2017 The Callista Group Limited.