Appendix D. Glossary
D-8
OSU 300 User Manual
61200663L1-1
MIB
management information base. A database of network management information
used by SNMP.
modem
Acronym for modulator/demodulator. Equipment that converts digital signals
to and from analog signals. Used to send digital signals over analog phone lines.
monitor
To watch or listen to a signal non-intrusively.
multi-mode
An optical fiber carrying multiple signals that are distinguished by frequency or
phase at the same time.
multi-point circuit
A single communications circuit that has more than two terminations.
NC
normally closed. Relay switch contacts that remain closed when inactive.
near end
The unit on-site.
NI
network interface. The demarcation point between the CPE and the PSTN.
NO
normally open. Relay switch contacts that remain open when inactive.
NRZ
non return to zero. A mode in which the digital level is low for a 0 bit and high
for a 1 bit, and does not return to zero between successive 1 bits.
out-of-band
Signaling that is separated from the channel carrying information (voice, data,
video, etc.). Typically the separation is accomplished by a filter. The signaling
includes dialing and other supervisory signals.
Summary of Contents for 1200218L1
Page 8: ...viii...
Page 14: ...Table of Contents xiv OSU 300 User Manual 61200663L1 1...
Page 18: ...List of Tables xviii OSU 300 User Manual 61200663L1 1...
Page 24: ...Chapter 1 Introduction 1 6 OSU 300 User Manual 61200663L1 1...
Page 38: ...Chapter 2 Installation and Operation 2 14 OSU 300 User Manual 61200663L1 1...
Page 64: ...Chapter 4 Status 4 8 OSU 300 User Manual 61200663L1 1...
Page 72: ...Chapter 5 Statistics 5 8 OSU 300 User Manual 61200663L1 1...
Page 104: ...Appendix C Acronyms Abbreviations C 4 OSU 300 User Manual 61200663L1 1...
Page 116: ...Appendix D Glossary D 12 OSU 300 User Manual 61200663L1 1...
Page 122: ...Index Index 6 OSU 300 User Manual 61200663L1 1...