Valcom V-2901A User Manual page 2

SIMPLIFIED BLOCK DIAGRAM OF A TYPICAL INSTALLATION
Features
Compatible with PABX, E-Key and 1A2
telephone systems
Switch selectable - loop or ground start access
Provides handsfree talkback
RJ11 modular connector for Tip and Ring
connections
Power ON LED
Provides door unlock contacts
Programmable options:
Programming access code
Ring pattern
Activate lock relay
Duration of lock relay activation
Time door can remain open after unlock
(exit delay time)
Entry delay time
Duration of ringing
Disable station alarm
Alarm disable code
Station alert tone
Input for manual door unlock (push-button)
Built-in 30Hz ring voltage generator with on/off
switch
Ringback tone to speaker
Calls can be placed On Hold
Background music input with volume control
Speaker to phone volume control
Phone to speaker volume control
Confirmation tone
Compatible with tone dial phones
Works with Valcom V-1072A doorplate speaker
or other Valcom talkback or doorplate speakers
Compatible with VPB-260 battery backup
V-2901A
Universal
E-Key
Door
C.O.Line
Answering
Position
System
Power
Supply
FIGURE 1
Doorplate
Speaker
with
Pushbutton
Dimensions/Weight
8.60"H x 11.00"W x 2.30"D
(21.84cm H x 27.94cm W x 5.84cm D)
3.0 lbs. (1.36 kg)
Nominal Specifications
Input Impedance:
Input Level:
Output Impedance:
Ring Supply:
Power Requirements
Power Supply:
Environment
Temperature:
Humidity:
Components
The following equipment is recommended when
using the V-2901A:
1 - V-2901A Universal Door Answering System
1 - C. O. Line Position (Electronic Key
System);
1 - Loop Trunk Position (PABX); or
1 - 400 type line card (1A2 key)
1 - Dedicated single line phone*
1 - Valcom Doorplate Speaker**
1 - VP-624B Power Supply
2
-10dBm Nominal
90VAC, 30Hz
-24VDC filtered
600mA minimum
0 to +40°C
0 to 85% (non-precipitating)
or
600 Ohms
45 Ohms