Multitech MMH900, User Manual

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Chapter 1 - Introduction & Description
Diagnostics Memory test, Analog Loop, Digital Loop,
Remote Analog Loop, Switch test, LED test,
Non-Volatile RAM test, Watchdog Timer
1.8.3 Composite LInk
Data Format Synchronous or Asynchronous
Link Speeds Up to 128,000 bps
Link Protocol Proprietary modified HDLC
Error Correction 16-bit CRC block check with ARQ
Interface RS232C/CCITT V.35/V.24, or use MultiMux
integral modem or DSU
1.8.4 33,600 bps Link Modem
Modulation ITU-T V.34; AT&T V.32 terbo; ITU_T V.32bis,
V.32, V.22bis, Bell 212A and 103 (North
America) or B.23 and V.21 (international)
Speeds 300 bps tp 33.6K bps
Commands Fully AT command compatible
Usage Synchronous full duplex over unconditioned
2-wire or 4-wire leased line; asynchronous
half or full duplex over 2-wire dial-up
Line Interface RJ-11C jack for dial-up and 2-wire or 4-wire
leased line; in Canada, one CA02B
connector
1.8.5 56,000 bps DSU
Speed 56K, 19.2K, 9.6K, 4.8K, or 2.4K bps
Format Synchronous DDS or compatible
Usage Full duplex over LADS (Local Area Data
Set) or two-pair non-loaded metallic wire
Line Interface DDS interface with an RJ-48 keyed jack