Instruction manual

Strata DK14
Optional Printed Circuit Boards
Strata DK General Description 6/00 3
Optional Printed Circuit Boards
Central Office Line/Digital Telephone Interface Unit (QCDU2)
The QCDU2 provides one loop start CO line circuit and two digital telephone circuits. It interfaces
with digital corded and/or cordless telephones, RPCI-DIs, ADMs connected to the corded
telephones and PDIU-DSs, and door phones. The DK14 supports up to six door phones. It does not
support a DDSS console. Up to two QCDU2 PCBs can be added to the DK14. Each line supports
Caller ID when optional equipment is added.
Standard Telephone Interface Unit (QSTU2)
The QSTU2 provides two standard telephone circuits for two-wire devices such as standard
telephones, Auto Attendant devices, alternate BGM source connection, voice mail machines, and
facsimile machines.
DTMF Receiver/ABR Tone Detector Unit (QRCU3)
The QRCU3 enables the Strata DK14 to recognize Dual-Tone Multi-Frequency (DTMF) tones
generated by a standard telephone or any other device connected to a QSTU3 standard telephone
circuit. It is also required for Direct Inward System Access (DISA) calls and built-in Auto
Attendant. The QRCU3 enables busy tone detection for Automatic Busy Redial.
Auto Attendant Feature Key (QKYS1)
The QKYS1 plugs into the QRCU3 option PCB to support built-in Auto Attendant.
Serial Interface Board (WSIU1)
The WSIU1 provides two serial interface ports for up to two of the following devices:
♦ Caller ID interface box
♦ SMDR Call Accounting device
♦ SMDI Voice Mail Interface
♦ PC with DKi Admin or external modem