CT1+ (Cordless Telephony generation 1 plus)

A variation on the early CT1 standard for analog

cordless telephony, CT1+ was developed jointly by Belgium, Germany, and Switzerland. CT1+ was intended as the basis for a public wireless service, along the lines of Telepoint. CT1+ operated in the 887

MHz and 932 MHz bands over 80 channels 25 kHz wide, with one channel per carrier. CT1+ employed frequency division multiple access (FDMA) and frequency division duplex (FDD) to derive two separate channels per conversation, one for downstream and one for upstream transmission, each of which is 12.5

kHz wide.Although CT1+ was not successful, it originated the concept of a common air interface (CAI), which enables multiple manufacturers to develop products in support of a public cordless telephony service offering. See also air interface, analog, carrier, channel, cordless telephone, CT1, downstream, FDD, FDMA, Telepoint, upstream, and wireless.

• 1.5-way paging
• 16
• 16-QAM
• 16-QPSK
• 18
• 1:8 Splitter
• 1A
• 1A1
• 1A2
• 1Base5 (1 Mbps; Baseband; 500 meters)
• 1B+D
• 1. Domain Name System. The naming convention that divides the Internet into logical domains identified in Internet Protocol version 4 (IPv4) as a 32-bit portion of the total address.The standard convention is user@organization.domain, where user is the name of the end user, organization is the name of the enterprise or other organization owning or sponsoring the address, and domain is the type of entity owning or sponsoring the address.The administration of the DNS is the responsibility of Internet Corporation for Assigned Names and Numbers (ICANN). See also domain, ICANN, Internet, and IPv4. 2.
• 1. In storage, irrelevant material, usually zero (0) bits, added to a data block in order to fill it to a minimum size, to force certain fields of control data or user data into certain positions or sizes, or to prevent the user data from duplicating a bit pattern that has a specific control meaning. See also block. 2.
• 1 cps, 1 Hz
• 1+ Dialing
• 1G (1st Generation)
• 1G (1st Generation)
• 1-persistent carrier sense multiple access (1-Persistent CSMA)
• 1-Persistent CSMA (1-Persistent Carrier Sense Multiple Access)
• 1+ WATS
• 1xEV-DO (one carrier EVolution-Data Optimized)
• 1xRTT (one times Radio Transmission Technology)
• 2
• 20
• 2:1