35
Chapter 3 - Front & Rear Panel Descritpions
3.3
LED Indicators
Command Modem
Indicator
Description
CD
Indicates the local command modem has detected a
carrier signal from a remote modem.
RCV/XMT
Indicates that the command modem is on-line by
flashing with data activity between the two command
modems.
OH
Indicates that the dial-up line for the command
modem is off-hook.
DTR
Indicated that the command modem is ready to
communicate.
External Composite Link
CD
The Carrier Detect (CD) indicator is used when the
MultiMux MMH900 series is configured for an
external composite link device and a carrier signal is
detected.
RCV/XMT
The Transmit (XMT) and Receive (RCV) indicators
are used when the MultiMux MMH900 series is
configured for an external composite link device and
the network is on-line by flashing with data activity
between the two multiplexers.
CTS
The Clear To Send (CTS) indicator is used when the
MultiMux MMH900 series is configured for an
external composite link device and the composite
link device is ready to transmit data.
V.35
The V.35 indicator is used when the MultiMux
MMH900 series is configured for an external
composite link device which uses a V.35 interface.
The V.24/V.35 shunt has to be in the V.35 position
for this LED to light.
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...