CDMA Question:

DECT is one of the wireless technologies, originated in Europe
DECT was designed to interwork with various networks such as PSTN, ISDN, GSM etc.
The initial standard. of DECT focused on developing air interface which is a radio link between cordless telephone and the base stations
This standard plugged into the telephone socket and the standard protocols for handover between several base stations
All these are connected to the same office switchboard, typically a PABX
The first product of its kind was from Olivetti, was a wireless LAN type product, known as NET3..