Telephone Systems General Description

Telephones and Peripherals
Cabling and Connectors
36 Strata CTX General Description 11/02
Door Phone/Lock Control Unit (DDCB)
The DDCB can support as many as three door phones (MDFBs)
or two door phones (MDFBs) and one door lock control relay.
Using the door lock control, digital station users can unlock a
customer-supplied electronic door lock at the touch of a button
programmed on their digital telephone or by dialing a feature
access code from any type of telephone. Each DDCB requires
one digital station circuit.
Each door lock can be programmed to remain open between
three~30 seconds. The Door Lock button LED remains On while
the lock is open. LCD telephones display “DOOR
UNLOCKED” until the telephone releases or times out.
External Speaker (HESB)
The HESB is a multi-functional, external, six-inch speaker unit with a built-in three-watt amplifier.
It can be used as a paging speaker, an amplified talkback speaker, or a telephone’s Loud Ringer.
Toshiba Stratagy and Stratagy DK Voice Processing
The Strata CTX can operate with Toshiba Stratagy and Stratagy DK voice processing systems,
which provide a number of helpful features. The Strata CTX supports in-band DTMF voice mail
integration for all of the above voice mail systems and requires DTMF receivers. It also supports
standard SMDI and Toshiba Proprietary voice mail integration. Refer to the appropriate Stratagy
literature for details.
Cabling and Connectors
The Strata CTX uses industry standard cabling and connectors to interface with lines, stations, and
peripherals. Stations use standard twisted-pair cabling to connect to the system via the MDF.
Digital and standard telephones require just one pair-cabling. Two pairs may be required to
achieve full distance when optional DKT subassemblies are used.
Digital telephones connected to BDKS require an external power supply to reach maximum
distance from KSU when the telephone has a DADM, BPCI or BVSU.
Station PCBs connect to stations and peripherals with a 25-pair Amphenol connector via the MDF.
Analog CO, DID, and Tie line circuits interface with the public telephone network via modular
connectors. T1 and ISDN use industry-standard Amphenol and modular connectors (for details,
see Table 26 on page 77).
Peripheral devices such as CTX WinAdmin maintenance PCs, etc., connect to a hub or LAN,
which connects to the processor’s Ethernet LAN interface via an RJ45 connector and Category 5
wiring. Call Accounting and Voice Mail SMDI require RS-232 modular adapters and cords to
connect to the processor BSIS interface.
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