ADTRAN 1200063L1, Manual

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Appendix F. Glossary
F-6 DSU III TDM User Manual 61200063L1-20
private network tributary clocking
Clocking in which the timing is derived from the DDS loop.
private network master clocking
Clocking in which timing is derived internally from the DSU.
private network master - slaved to external clock
Clocking in which timing is slaved to the DSU's external transmit clock.
PSTN
public switched telephone network. A direct distance dialing telephone net-
work that is available for public use. The network is an integrated system of
transmission and switching facilities, signaling processors, and associated
operations support systems that is shared by customers. PSTN also is called
public network, public switched network, or public telephone network.
point-to-point
A private circuit, conversation, or teleconference in which there is one per-
son at each end, usually connected by some dedicated transmission modem.
RDL
remote digital loopback.
receiver sensitivity
The magnitude of the received signal necessary to produce objective bit error
rate or channel noise performance.
remote configuration
A feature designed into ADTRAN DSU/CSU products that allow remote
DSU/CSU to be configured from a local DSU/CSU or VT 100 compatible
terminal.
remote V.54 test
A diagnostic feature that allows testing of the DDS circuit by looping the
remote DSU/CSU back to the local DSU/CSU.
RJ-45S
Registered jack. An 8-pin connector used for data transmission over stan-
dard telephone wire. Single line, 2-wire T/R, PR/PC, programmed data, 8
position, keyed.