CTP Systems CTPhone 1900, Applications Manual

Page: 61 / 132

DOC00101-01 3-13
CTPhone 1900 System Hardware & Software Installation
CTPhone Controller Installation
Physical Installation
The CTPhone Controller is designed for mounting on walls or in industry
standard 19-inch rack mounts. Side brackets on the Controller should be
rotated depending on the type of installation as shown in Figure 3-8.
Figure 3-8. CTPhone Controller Mounting Bracket
CTPhone Controller Input Power
The CTPhone Controller requires -48V DC input power which may be pro-
vided by the office telephone system or AC outlet via a local power supply.
DC Power
The customer must supply a power cord with the following requirements:
• 18 AWG wire
• 2.1mm ID x 5.5mm OD barrel jack (Switchcraft, Inc. S765 or equiva-
lent) with minus (–) potential center lead and positive (+) shield lead
The barrel jack connects to the CTPhone Controller at J1 (see Figure 3-3
on page 3-7). Battery source requirements are -44 to -56 VDC @2 Amps.
An inline fuse (rated 3 Amps/ @250 V Slow-Blow) must be installed as
close as possible to the battery source on the minus potential side.
To prevent accidental removal of the power cord connected to J1 on the
CTPhone Controller, the power cord should be attached by ty-rap to the
power strain relief above the ground screw on the CTPhone Controller
(see Figure 3-3 on page 3-7).
Bracket set for 19” rack mount
For wall mount installation, remove
and rotate counterclockwise 90×