ESI-50L Hardware Installation Manual External
connections
G.4
External paging device connection
A dry-contact overhead-paging device can be connected through the RJ-11
OH Paging
connector, which is located on the front of the main board faceplate just below the NSP’s
Ethernet connector. Although this is a six-pin connector, only two pairs are needed between
the paging device and the connector:
• To pin-out the connector for
normally open
operation, connect the
audio
wires to
pins 3 and 4
and the
control
pair to
pins 1 and 2
.
• To pin-out the connector for
normally closed
operation, connect the
audio
wires to
pins 3 and 4
and the
control
pair to
pins 5 and 6
.
Dry-contact control
The manner in which the dry-contact pair is punched down on the 66 block sets the pair as normally open
(sending a page to the port will close the contacts) or normally closed (sending a page to the port will open
the contacts).
Connect the dry-contact pair of the device to the ESI Communications Server as follows:
•
Terminals 35 and
36
to provide normally
open
operation;
or
•
Terminals 36 and
38
to provide normally
closed
operation.
The port can be used with zone paging units.
Note:
ESI doesn’t recommend the use of paging contacts for door-unlocking mechanisms.
Programming
To access the overhead paging port, assign feature code
5 9 9
to a programmable feature key.
Amphenol cable connections
Connect a standard 66 or 110 block to each digital port card by using a male 50-pin amphenol cable to each port
card female connector located on the cabinet. The connector closest to the wall is the first card; on other ESI
Communications Servers, the connector in the leftmost slot is the first card.
