Difference between CT0,CT1,CT2 analog cordless telephones
This page on CT0 vs CT1 vs CT2 describes difference between CT0, CT1, CT2 analog cordless telephone standards. CT is the short form of Cordless Telephone.
CT0
The following are features of CT0 analog cordless telephone standard.
• Mobile Frequency in MHz : 2/48 in UK, 26/41 in France, 30/39 in Australia,
31/40 in Netherlands as well as in Spain, 46/49 in China, S.Korea, Taiwan and USA, 48/74 also in China.
• Duplex Scheme : FDD
• Multiple Access Type: FDMA
• No. of channels : 10/12/15/20/25
• Spacing between Channels (KHz) : 1.7/20/25/40
• Modulation technique : FM
CT1,CT1+
The following are features of CT1 and CT1+ cordless telephone standards.
• Mobile Frequency in MHz : 914 and 960 in CT1, 885 and 932 in CT1+
• Duplex Scheme : FDD
• Multiple Access Type: FDMA
• No. of channels : 40 in CT1 and 80 in CT1+
• Spacing between Channels (KHz) : 25 KHz
• Modulation technique : FM
CT2,CT2+
The following are features of CT2 and CT2+ analog cordless telephone standards.
• Mobile Frequency in MHz : 864 and 868 in CT2, 944 and 948 in CT2+
• Duplex Scheme : TDD
• Multiple Access Type: TDMA/FDM
• No. of channels : 40
• Spacing between Channels (KHz) : 100 KHz
• Users per channel : one
• Modulation technique : GFSK , 0.5 gaussian filter
• channel data bit rate (Kbps) : 72
Cordless Telephone Basics
Refer Cordless Telephone System basics and frequency allocations.
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