... capacity,Optimized call route,SMS functions,Caller's ID. GSM WIRELESS PBX GSM WIRELESS PBX Feature: PBXs, a popular technology in the past 20 years, ... main functions of TelePower’s wireless PBX and IP-PBX 1. Strong interface capacity: can access to PSTN, CDMA, GSM, and IP networks.2 ... ’s phone ring. 5. Many more other functions as traditional PBX. GSM WIRELESS PBX