May 2001
System Hardware Manual 7 - 203
A6-324000-642-01 – Release 4.0
May 2001
3.3 APR-UA Unit (Analogue Port Ringer)
The Analogue Port adaptor with Ringing provides an interface for
installing Single Line Telephones, modems, NEC VoicePoint
Conferencing unit, and other compatible analogue devices. The
APR-UA Unit also generates ringing signals. By providing ring
generation, the user can install a personal fax machine or an
answering machine for convenience. Two user-adjustable switches
are provided on the adaptor; one allows for 600
Ω
or a complex
impedance interface to devices such as a modem or Single Line
Telephone, the second switch (SW1) is permanently set to position
2. The APR-UA Unit requires an AC adaptor (ACA-UA Unit). If a
CTA-UA Unit, the CTU( )-UA Unit, or the HFU-UA Unit and an APR-
UA Unit are both installed, only one AC adaptor is required.
3.3.1 Installing an APR-UA Unit on a Multiline Terminal
1. Unplug the telephone cord from the Multiline
Terminal.
2. Prepare Multiline Terminal for adapter installation.
Refer to Section 2 Preparing Multiline Terminal for
Adapter Installation.
Figure 7-15 APR-UA Unit
ACA-UA Unit
(AC adaptor)
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