Telephone Systems General Description

Universal Slot PCBs
Station, Line and Option PCBs
18 Strata CTX General Description 11/02
Digital Telephone Interface Unit (PDKU2)
Provides eight digital telephone circuits (2000-series
phones only. Do not use the PDKU for 3000-series
digital telephones.). LCD display is only 16 characters
wide and the
button will not work.
Interface Options: Digital telephones (with or without
BHEU or HHEU, DVSU, DADMs, or digital cordless
telephone)
Stand-alone digital cordless telephone
DDSS console
DDCB
Does not support DKT3014-SDL features.
Internet Protocol (IP) Interface Unit (BVPU)
Provides four VoIP Circuits as E&M Tie lines
One 10Base-T port
One RS-232 maintenance port
H.323 standard for Voice over Internet Protocol (VoIP).
Interface Options: LAN, Internet, WAN.
Digital/Standard Telephone Interface Unit (RDSU)
Without RSTS, provides:
Two standard telephone/
Four digital telephone circuits (2000-series phones
only).
With RSTS, provides:
Four standard telephone/
Four digital telephone circuits (2000-series phones
only).
Interface Options:
Digital – same as PDKU.
Standard – same as RSTU (standard Message Waiting
not available)
Standard Telephone Interface Unit (RSTU3)
Provides eight standard telephone circuits. Stutter dial
tone is provided for Message Waiting audible
indication.
Interface Options:
Standard telephones
Voice mail ports
Off-premises stations
Other similar devices
Alternate BGM source
Auto Attendant digital announcer
Message Waiting lamp
Fax machines
ACD Announcer
Standard Telephone Subassembly (RSTS)
Attaches to RDSU. Provides two additional standard
telephone circuits. One maximum per RDSU.
Interface Options: Same as RSTU, except no Message
Waiting lamp.
-48 Volt Supply Internal Option (R48S)
Attaches to RSTU and RDSU
48VDC circuit for up to eight standard telephone
circuits.
Interface Options: Optionally interfaces to the RSTU
and RDSU to extend loop length of standard telephones
from 600 ohms to 1200 ohms. Required for OPS
operation.
Stratagy DK
Provides two, four, six, or eight VM ports.
All of the above Stratagy DK systems use eight station
ports of Strata CTX capacity.
Table 14 Station PCBs (continued)