User manual

CHAPTER 1： MODEM INTRODUCTION
1.2 Technical Specifications
Modem
fully complies with ITU-T recommendations V.34, V.32bis, V.32,
V.22bis, V.22, V.21, V.23, V.24, V.26bis,V.28, V.25, V.25bis, V.52, V.54, V.42,
V.42bis, V.8, and BELL 212A/103 operating standards.
•
Modulation type : Refer to table 1-1A,1-1B.
•
Clock tolerance
(1) Synchronous :
±
0.01%
(2) Asynchronous : Basic range + 1% to - 2.5%
Extended overspeed range + 2.3% to - 2.5%
•
DTE speed
(1) Synchronous : 33600/31200/28800/26400/24000/21600/19200/16800
/14400/12000/9600/7200/4800/2400/1200 bps
(2) Asynchronous :
115200/76800/57600/38400/33600/32000/31200/28800/
26400/24000/21600/19200/16800/14400/12000/9600/7200
/4800/3600/2400/1200/600/300 bps with speed conversion.
Total bit length : 8, 9, 10, 11 bits
Parity bit : odd, even, none
Stop bit : 1, 1.5, 2 bits
•
Error Correction : MNP 4/ITU-T V.42
•
Data Compression : MNP 5/ITU-T V.42bis
•
Flow Control : HArdware CTS/RTS, CTS only
Software X-ON/X-OFF
•
Dial Command : Extended AT and ITU-T V.25bis command set.
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