DigiTech C0408 Common Audible and Auxiliary Ringinginterface, Directly to the 117VAC Line

IMI 66-083 Installa+’

COMMON AUDIBLE AND AUXILIARY

RINGINGINTERFACE

Relay closure dry-contact points are available for controlling external audible equipment . These contact closures track the pattern of the ringing . The contacts are closed during the ringing period and are open during the silent period. A

typical common audible connection is illustrated on Figure 3-9below.

Do not exceed a 1 amp at 24 volts (0.5 amp at 48

volts) load on these control terminals. If the load requirements exceed this limit, connect the

load through an external slave relay. DO NOT CONNECT THESE CONTROL TERMINALS

DIRECTLY TO THE 117VAC LINE.

Outside Lines

•Common audible terminals provide a dry-contact closure whenever any of the outside lines that are connected to the common equipment .

-_-bow CURRENT APPuDATlDNS ONLY - SEE CAUTION lExt-)

Selected Ports

The station 17 audible terminals provide a dry-contact relay closure whenever ringing is sent to a programmable destination. Class of service programming is used to choose either the paging port or station port 17 as the ringing destination. Refer to page 4-13 for details.

When programmed for station port 17 ringing, an external device is often used to provide loud ringing similar to the common audible arrangement shown in Figure 3-8.

When programmed forpaging port ringing, an external paging amplifier is employed to amplify and broadcast the ringing tones sent to the paging port. The relay closures that appear at the ringing terminals can be employed to energize the external paging amplifier during the periods when the ringing tones are being sent.

NOTE: Refer to the following paragraph headedFad Interface for a discussion of external paging

amplifer connections and information for using the paging port ringing terminals in an alternate paging enable function.

.----------.--..-..---..-...-------.~ : AUDIBLE OR DOMMDN AUDIBLE

TERMINALS

(WITH SLAVE RELAY CONNECTIONS FOR HIGH CURRENT APPLICATIDN . SEE CAUllDN TEXT)

			,,+,	VOLTAGE CLAMPINO
				DIODE RECOMMENDED
							Af OR	DC tNPUT
							AS REWIRED
					’	s’EtikiNo		0
						P O W E R
STATION CONNECTOR BLOCK									0
	l4-LINE. 8-STATION A N D
B - LINE . I6-STATION BASE UNITSI
		STATION 17AUDIBLE

Figure 3-9. Typical Common Audible Interface Wiring