Introduction; Front Panel - Multitech MMH900 User Manual

3.1

Introduction

This chapter describes all of the front panel LEDs, switches, jumpers
and the shunt on the base and the back panel connectors. The front
panel contains all the LEDs for all the MultiMux MMH900 Series models.
Some of the LEDs on your particular model will not be active, for
example, if you have an internal composite link modem, the External
Composite Link LEDs on the lower left side of the control panel will not
light. Also, on the back panel, not all of the connectors are used in
agiven configuration.
3.2

Front Panel

The MultiMux is equipped with a complete set of LED status indicators
and DIP switches located behind the front panel. The status indicators
show precisely what is occurring in the network at all times. By
periodically checking the indicators you can keep abreast of system
activity without tieing up a channel device or using the supervisory
console. The front panel indicators are divided into four main categories;
the Command Modem, External Composite Link device, Internal
Composite Link device and the system status indicators. The function of
each indicator by category is explained in section 3.3.
Command Modem Channel Five
CD RCV XMT OH
DTR RCV XMT
External Composite Link
Channel one
CD
RCV XMT CTS V.35 RCV XMT
Chapter 3 - Front & Rear Panel Descritpions
R
BUFFER
E FULLNESS
T LEVEL
R
A
N
S
Channel Six Channel Seven Channel Eight M
IT 2
1 3
RCV XMT RCV XMT RCV XMT
I n t e r n a l C o m p o s i t e L i n k
Channel Two Channel Three Channel Four
RCV XMT RCV XMT RCV XMT ISDN
M M H 2 8 3 4 C D R C V X M T C T S 2 8 . 8
D S U C D R C V X M T C T S
V 2 9 / V 3 3 C D R C V X M T C T S
Figure 3-1. MultiMux Front Panel
F R T A I N T E R N A L L I N K D E V I C E
L MultiT ech
L I E E S ( M o d e m s )
O N M S Y
M
C K O T N V
T T C 2 M Systems
R E 9 H
A
L
L M L / 2 I
R A D O I D V 8 S
C R W D S 3
N 3 D
V M N E U
K 3 4 N
MultiMux
Statistical Multiplexer
2 4 . 0 1 9 . 2 1 4 . 4 O H T R E C D B U P
5 6 1 9 . 2 R T S N S O O S T M
34