Aria-24
ipe
Digital Key Telephone System
Installation Manual
Issue 1.5
Aria Technologies
75
6.4 Connection of the additional terminals
6.4.1 Connecting the additional terminal to MBU
MBU provides connections for 1 external music source, 1 external page port, 2 relay contacts, and an
alarm/door-bell input monitor through PJ1 audio jack and MJ4 RJ45 Modular Jack.
External Music Source wiring
MBU accommodates 1 port of external music source through PJ1 (RED) audio Jack.
Relay Contacts
MBU provides 2 relay contacts that are used for loud bell or external paging through pin No. 1-2 & 3-4 of
MJ4.
External Paging wiring
MBU supports 1 external paging port through Pin No.5-6(paging port) of MJ4.
Alarm Detection wiring
MBU provides an external alarm detection input, which can be used to notify to extensions when the
external switch is closed or opened. This alarm detection input is provided through pin No.7-8 of MJ4.
Close or open detection is programmable by ADMIN. Programming.
