Installing The Personal Computer Interface Unit - Comdial DSU II System Manual

IMI66–132
2.18.7

Installing The Personal Computer Interface Unit

(Projected Availability of this feature is first quarter of 1997)
The Personal Computer Interface Unit (PCIU) is a device that you can connect between a digital
station port and its proprietary telephone. The PCIU allows telephone users to initiate telephone
and voice mail related functions from their personal computer (PC).
The PCIU includes Service Provider Interface (SPI) software on computer diskettes. When you
install this SPI software on a PC, the PC users can employ their Telephony Applications
Programming Interface (TAPI), third-party Microsoft* Windows applications programs to
control many useful telephone functions.
When you make the Visual Voice Processing (V.V.P.) Visual Call Manager (VCM) software
option available, the voice mail system can use the serial data path to the PCIU to send messages
to the telephone's display and to the SPI on the PC.
*Microsoft is a registered trademark of Microsoft Corporation, Redmond, Washington
Making The PCIU Cable Connections
Four cable connections are required to the PCIU-station line cord, digital telephone line cord, PC
cable, and power cable.
1. Disconnect the line cord on the digital telephone from the digital station port connector and
plug it into the connector labeled PHONE on the PCIU.
2. Connect the supplied serial data cable between the PC's serial data port (COM port) and the
PCIU's serial port connector.
3. Plug one end of a standard line cord into the connector labeled LINE on the PCIU. Plug the
other end of the line cord into the digital station port connector.
4. Plug the transformer attached to one end of the power cable into a 115 VAC electrical wall
outlet. Connect the other end of the power cable into the PCIU connector labeled POWER.
The green LED on the PCIU will be on to indicate power is being supplied to the PCIU.
NOTE: PCIU power loss will create the same symptoms as the disconnection of the PCIU
from the digital telephone system. If this occurs, plug the digital telephone directly into a
digital station port connector.
2 – 84 Installing The DSU II Digital Telephone System
DSU II Digital Telephone System