Installation manual

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.