Toshiba Strara CTX Series, Installation And Maintenance Manual, Page: 29 / 290

Strata CTX Configuration
1-15
Strata CTX I&M September 2002
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 1-9 Station PCBs (Cont.)