34
Chapter 3 - Front & Rear Panel Descritpions
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.
DTR
OH
Statistical Multiplexer
R
E
T
R
A
N
S
M
IT
1
2
3
BUFFER
FULLNESS
LEVEL
F
L
O
C
T
R
L
R
C
V
L
I
N
K
A
L
A
R
M
R
E
M
O
T
E
D
W
N
T
E
S
T
M
O
D
E
MultiMux
I n t e r n a l C o m p o s i t e L i n k
M M H 2 8 3 4 C D R C V X M T C T S 2 8 . 8 2 4 . 0 1 9 . 2 1 4 . 4 O H T R E C D B U P
D S U C D R C V X M T C T S 5 6 1 9 . 2 R T S N S O O S T M
V 2 9 / V 3 3 C D R C V X M T C T S
External Composite Link
Channel Two
Channel Three
Channel Four
Command Modem
Channel Five
Channel Six
Channel Seven
Channel Eight
XMT
RCV
XMT
RCV
XMT
RCV
A
S
Y
N
C
L
I
N
K
D
S
U
V
2
9
/
V
3
3
RCV
Channel one
RCV
XMT
CD
RCV
XMT
CTS
V.35
XMT
RCV
XMT
RCV
XMT
XMT
RCV
XMT
RCV
I N T E R N A L L I N K D E V I C E
( M o d e m s )
Systems
MultiTech
M
M
H
2
8
3
4
CD
I
S
D
N
ISDN
Figure 3-1. MultiMux Front Panel
Summary of Contents for MMH900
Page 1: ...MMH900 Series Statistical Multiplexer User Guide...
Page 7: ...Chapter 1 Introduction Description...
Page 26: ...Chapter 2 Configuration...
Page 33: ...Chapter 3 Front Rear Panel Descriptions...
Page 44: ...Chapter 4 Installation...
Page 51: ...Chapter 5 Commands...
Page 89: ...Chapter 6 Operating Procedures...
Page 96: ...Chapter 7 Troubleshooting...
Page 111: ...Chapter 8 Service Warranty Technical Support...
Page 116: ...Appendices...
Page 184: ...Glossary...
Page 193: ...Glossary 193 X Y Z...
Page 200: ...S000315A...
