Installing The PCIU
Connect the PCIU between a digital station port on the common equipment cabinet and that port’s proprietary
digital speakerphone and also to a user-supplied PC. The PCIU includes Service Provider Interface (SPI) software
that you must load on the user-supplied PC. The SPI software, in conjunction with the wideopen.call software,
allows the PCIU to use the serial data path between it and the user-supplied PC to send messages to the PC and to
the telephone’s display. Complete instructions for installing the SPI software are detailed in the paragraph titled,
Installing The Telephony Driver.
Making The 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 digital LCD speakerphone’s line cord 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. (A 9-pin to 9-pin cable is supplied with the PCIU. If you are using a 25-pin serial port on the
PC, you must use a 9-to-25 pin adapter.)
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 turns
on to indicate that 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.
4 — Installing The PCIU
IMI89-260
Installing The Personal Computer Interface Unit
