Telephone Systems General Description

Universal Slot PCBs
Station, Line and Option PCBs
Strata CTX General Description 11/02 19
Table 15 CO Line PCBs
Caller ID Interface Unit (RCIU2)
Provides four Caller ID circuits.
With RCIS: eight circuits.
Interface Options:
Provides Caller ID LCD display for analog loop or ground
start lines with Caller ID. Requires: RCOU, RCOS,
RGLU2 or PCOU. Not compatible with T1.
Caller ID Interface Subassembly (RCIS)
Attaches to the RCIU2.
Same as RCIU2.
Direct Inward Dialing Interface Unit (RDDU)
Provides four DID circuits. Interface Options:
DID analog lines.
Enhanced 911 CAMA Trunk Interface Unit (RMCU/RCMS)
E911 CAMA circuits. Provides up to four CAMA trunk
circuits. The RMCU/RCMS eliminates the need for
connection of adjunct terminal adapter equipment to
E911 CAMA trunks.
Requires one or two RCMS PCBs for two or four
CAMA lines respectively.
E911 analog CAMA trunks.
CAMA Trunk Subassembly (RCMS)
RCMS attaches to RMCU. Provides two E911 CAMA
circuits.
Up to two RCMSs per RMCU for four CAMA lines max.
(One RCMS comes packaged with the RMCU.)
Same as RMCU.
Ground/Loop Start Interface CO Line Interface Unit (RGLU2)
Provides four ground or loop start line circuits. Each
can be individually set for ground or loop start
operation.
Interface Options:
Analog loop or ground start analog lines.
ISDN S/T-type Basic Rate Interface Unit (RBSU)
Two ISDN BRI S/T point circuits (NT or TE). Each
circuit is 2B+1D. (Host for the RBSS.)
Interface Options: Network and/or station side.
Basic Rate Interface Subassembly (RBSS)
Attaches to attaches to RBSU. One RBSS
subassembly per RBSU.
Two ISDN BRI, S point circuits (2B+D each).
Interface Options: Station side only.
ISDN U-type Basic Rate Interface Unit (RBUU)
Provides two ISDN BRI, U point circuits (2B+D each).
Host for the RBUS.
Interface Options: Network and/or station side. Network
side requires a dealer-supplied NT1 interface.
Basic Rate Interface Subassembly (RBUS)
Attaches to attaches to RBUU. One RBUS
subassembly per RBUU.
Two ISDN BRI, U point circuits (2B+D each)
subassembly for the RBUU.
Interface Options: Network and/or station side.