1.8
Specifications
1.8.1
Async Data Channels
Number of Channels
Up to sixteen (#MMV16XXC), or
up to thirty-two (#MMV32XXC)
Maximum Speed
19,200 bps
All Channels
Channel Speeds
All standard speeds from 300 bps to 19.2K bps
Data Format
Asynchronous: 5, 6, 7, or 8 data bits, with 1,1.5, or 2 stop bits
Parity
Odd, even, or none
Local Echo
On or off selectable for each channel
Flow Control
Xon/Xoff, CTS on/off, or HP ENQ/ACK selectable for each channel
Pacing
On or off selectable for each channel, DTR on/off, or Xon/Xoff
Interface
RS232C/CCITT V.24; 25-pin female D connectors
1.8.2
System Control
Local Access
Through MultiMuxs RS232C Command Port
Remote Access
Through MultiMuxs internal dial-up CCITT V.22bis/V.22, Bell 212A/103 (2400/1200/300
bps) command modem Device
Any asynchronous keyboard terminal, PC in terminal mode (local access), or any standard
dial-up 2400/1200/300bps V.22bis/V.22, 212A/103 modem (remote access)
Command Functions
Menu-driven/help screen approach. Commands to select channel speeds, flow
control methods, listing of parameters, help screens, storing of configurations, downline
loading, status reporting, echo controls, resets, pacing, parity, stop bits, response time
priorities, test modes, modem configurations, and other parameters.
Diagnostics
Memory tests, Local and Remote Digital Loop tests, Switch test, LED test, Non-Volatile RAM
test, Watchdog Timer, and Voice/fax Channel Loopback test.
1.8.3
Composite Link
Number of Links
Two (Links A and B)
Data Format
Synchronous
Link Speeds
Up to 256K 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 DSU
1.8.4
Internal DSU:
Description
Integral card DSU, synchronous and full duplex over DDS network, 4-wire non-loaded
metallic wire pairs or LADS (Local Area Data Set) at transmission speeds of 2400,4800, 9600,
19,200 or 56,000 bps
Line Interface
DDS interface with a RJ48S 8-position keyed jack
1.8.5
Sync Data Channel
Number of Channels
One (Port B)
Data Format
Synchronous
Channel Speed
Up to 128K bps
Channel Protocol Any Synchronous HDLC
Interface
RS232C/CCITT V.35/V.24; 25-pin male D connector