Telephone Equipment and Service

The Strata DK14 KSU contains the main processor, components:

Strata DK General Description 5/99
The main PCB (WMAU) has four integrated circuits that can connect to digital corded and/or cordless telephones, stand-alone data interface units (PDIU-DSs), and digital door phone/lock control units (DDCB). Each of the digital telephones can support a PC Data Interface Unit (RPCI-DI) or up to two Add-on Modules (DADMs). It does not support a DDSS console. Two circuits for loop start CO lines are built into the main PCB. Each line can be programmed for Dual-tone Multi-frequency (DTMF) or dial pulse signaling. It includes a switch to control potential excess volume from a nearby private branch exchange (PBX) or CO. Built-in gas tubes help protect each circuit from lightning. Each line supports Caller ID when optional equipment is added.

The QCDU2 provides one loop start CO linecircuit 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.

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.

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.

The QKYS1 plugs into the QRCU3 option PCB to support built-in Auto Attendant.

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 DKAdmin or external modem