ECSD (Enhanced Circuit Switched Data)

In Enhanced Data rates for GSM Evolution (EDGE) cel-

lular radio networks, an enhancement of the native Global System for Mobile Communications (GSM) circuit-switching protocol. ECSD adds 8-Phase Shift Keying (8-PSK) as a modulation option, thereby increasing the efficiency of data transmission and yielding greater throughput. See also 8-PSK, EDGE, GSM, modulation, protocol, and throughput.

• 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
• 2:1
• 2:1
• 218–219 MHz Service
• 22
• 23B+D
• 23B+D
• 24
• 256-QAM
• 2.5 Gbps
• 2.5 Gbps
• 2.5 Gbps
• 2.5G (Two point Five Generation)
• 26
• 28
• 2B1Q (2 Binary 1 Quaternary)
• 2B+D
• 2 Binary 1 Quaternary (2B1Q)
• 2 cps, 2 Hz