CT2

CT2 is a cordless telephony standard that was used in the early 1990s to provide short-range proto-mobile phone service in some countries in Europe and in Hong Kong.

CT2 is a digital FDMA system that uses time-division duplexing technology to share carrier frequencies between handsets and base stations.

Outside Europe, the system achieved a certain amount of popularity in Hong Kong with three operators offering service from 1991, until licenses were terminated in 1996.

[6] A CT2 service was offered in Singapore from 1993 to 1998 by Telecommunications Equipment under the brand name Callzone,[7][8] using Motorola's Silverlink 2000 Birdie handset.

The disadvantages, compared to cellular, were that many networks did not deliver incoming calls to the phones (Bi-Bop was an exception), and that their areas of use were more limited.

CT2Plus class 2 systems benefited from the use of common signalling channels and offered multi-cell hand-off as well as tracking of devices.

Nortel Networks offered a private branch exchange system based on the standard which was specified in Department of Communication document RSS-130 Annex 1.

ACT built two active test systems which were located in Monticello, New York (outdoor), and outside and inside the South Street Seaport complex in lower Manhattan.