LG LDK-20 User Manual download pdf (Page 68)

IPLDK-20 Installation Manual Terminal Connection

5.4 Connecting Additional Terminals

MBUB provides connections for 1 external music source, 1 external page port, 2 relay contacts, and an alarm/door-

bell input monitor through the PJ1 audio jack and a MJ4 RJ45 Modular Jack.

Figure 5.4.1 Additional Terminal Connection

5.4.1 External Music Source wiring

MBUB accommodates 1 port of external music source through a PJ1 (RED) audio Jack.

5.4.2 Relay Contacts

MBUB provides 2 relay contacts that are used for loud bell or external paging through pin No. 1-2 & 3-4 of MJ4.

5.4.3 External Paging wiring

MBUB supports 1 external paging port through Pin No.5-6 (paging port) of MJ4.

5.4.4 Alarm Detection wiring

MBUB provides an external alarm detection input, which can be used to transmit notification to extensions when the

external switch is closed or opened (programmable through Admin Programming). This alarm detection input is

provided through pin No.7-8 of MJ4.

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LG LDK-20 User Manual Page 68