Installation manual

ESI-50L Programming Manual Function 3: Extension programming
F.5
Overhead paging interface
You can connect a dry-contact overhead paging device to the system through the first port card’s 66 block.
The overhead paging port’s access is fixed as extension 599 for programming purposes. The user can
access it by:
(a.) Dialing 5 9 9
or
(b.) Programming 599 as a programmable key and/or including 599 in one or more page zones.
Note: DTMF can be transmitted to the overhead paging port after access, allowing for zone overhead paging, if
the paging unit supports zone paging.
1.
Ext. Type Name CO
2.
Page zone
599 1
Dry contact control
The manner in which the dry contact pair is punched down on the 66 block sets the pair as either
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). See the ESI Communications Servers Hardware Installation Manual (ESI
document #0450-1049).