CT1
@ct1sealantAbout
CT1 was the first-generation analog cordless telephone standard that was developed by the European Conference of Postal and Telecommunications Administrations in 1984 and used primarily in Europe. The standard defined the technical and operational characteristics for cordless telephones, allowing a wireless handset to communicate with a base station that is connected to the public telephone network. The original frequency allocation included 40 duplex channels using 25 kHz separation, with handsets transmitting in the 914-915 MHz band and base stations transmitting n the 959-960 MHz band. These frequencies overlap with those used by channels 120-124 on GSM cellular phones and thus these original frequencies have been withdrawn from use for cordless phones in the countries that originally authorized them. CT1+ provided in 1987 for a set of 80 additional channels using the same technical standard with 885–887 MHz used by the phones and 930–932 MHz used by the base stations. Read more
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