M20 Hardware Design
z Class 1 (1W) at DCS 1800 and PCS 1900
GPRS connectivity
z GPRS multi-slot class 12 (default)
z GPRS multi-slot class 10 (option)
z GPRS multi-slot class 8 (option)
z GPRS mobile station Class B
Temperature range
z Normal operation: -35°C ~ +80°C
z Restricted operation: -45°C ~ -35°C and +80°C ~ +85°C
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1
z Storage temperature: -45°C ~ +90°C
DATA GPRS
CSD
z GPRS data downlink transfer: max. 85.6 kbps
z GPRS data uplink transfer: max. 85.6 kbps
z Coding scheme: CS-1, CS-2, CS-3 and CS-4
z Support the protocols PAP (Password Authentication Protocol)
usually used for PPP connections
z Integrate the TCP/IP protocols
z Support Packet Switched Broadcast Control Channel (PBCCH)
z CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps,
non-transparent
z Support Unstructured Supplementary Services Data (USSD)
SMS z MT, MO, CB, Text and PDU mode
z SMS storage: SIM card
FAX Group 3 Class 1
SIM interface Support SIM card: 1.8V, 3V
Antenna interface Connect via 50 antenna connector or antenna pad
Audio feature Speech codec modes:
z Half Rate (ETS 06.20)
z Full Rate (ETS 06.10)
z Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80)
z Adaptive Multi-Rate (AMR)
z Echo Cancellation
z Echo Suppression
z Noise Reduction
Serial Interface Serial Port 0:
z Seven lines on Serial Port 0
z Use for AT command, GPRS data and CSD data
z Support multiplexing function
z Support baud rate from 75 bps to 115200 bps
z Support Autobauding from 4800 bps to 115200bps
Serial Port 1:
z Software debug function
z Two data lines RXD1 and TXD1
Phonebook management Support phonebook types: SM, FD, LD, RC, ON, MC
SIM Application Toolkit Support SAT class 3, GSM 11.14 Release 99
Real time clock Implemented
M20_HD_V1.01 - 15 -
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