Setting Up A Dry Contact Relay Alarm System; Figure 3-5: Dry Contact Wires' Mate; Table 3-1: Dry Contact Operational Description - AudioCodes Mediant 1000 User Manual

SIP User's Manual
3.4.2

Setting up a Dry Contact Relay Alarm System

The dry contact ports I and II located on the gateway's CPU module (refer to
page 29), allows you to connect the gateway to an external audible or visual alarm system.
The table below describes the operational status of these dry contact ports.
Port
During normal operation, the dry contact is
I
open.
During normal operation, the dry contact is
II
open.
You can view a detailed description of these alarms by accessing the Active Alarms Table
(refer to Section
The external alarm system is connected to the Mediant 1000 gateway's dry contact
connector on the CPU module, using the supplied dry contact wires' mate (refer to
3-5). The mate provides four spring-cage terminal block connector labeled 4, 3, 2 and 1
(from left to right). These connections correspond to the four pins of the dry contact
connector on the CPU module.
You need to supply your own wiring (for connecting to the mate's spring-cage connections)
as well as a visual and/or audible alarm system attached at the other end of the wires. The
dry contact connector suites wire sizes in the range 20 to 28 AWG. In addition, the dry
contact system can receive a current of up to 1.5 A.
Note:
Version 5.0

Table 3-1: Dry Contact Operational Description

Normal State
5.10.4 on page 207) in the gateway's embedded Web server.

Figure 3-5: Dry Contact Wires' Mate

The dry contact alarm provided on the CPU card should be connected only
to SELV (Safety Extra-Low Voltage) non-energy hazard sources (Class 2)
as per UL60950 and EN60950.
If a Major alarm is generated, the dry
contact closes.
If a Critical alarm is generated, the dry
contact closes.
41
3. Installing the Mediant 1000
Figure 2-1
Alarm Severity State
December 2006
on
Figure