IPLDK-20 Installation Manual Terminal Connection
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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.