Serial Port - ESI IVX20 Installation Manual

IVX 20

Serial port

A standard serial cable may be connected to the DB9 serial connector on the side of the cabinet. Use a
standard shielded serial cable, DB9 to DB25 (Radio Shack #26-117 or equivalent).
Note: The maximum distance from the cabinet is 100 ft.
The output from the serial port is 8 data bits, 1 stop bit, and no parity. The baud rate is
1200 baud. The pinout is:
Note: When a laptop is connected for system programming, the baud rate will automatically switch to
38.8K and SMDR records will be buffered until the call accounting system is re-installed.
External paging device connection
A dry contact overhead-paging device can be connected to the system through the 66 block. The
overhead paging port is fixed as extension 199 for programming purposes and user access.
Important: The overhead paging port is designed to handle 30 volts DC @ 1.0 amps. This
limit is imposed to avoid high voltages on the 66 block. Therefore, please attach
only approved devices to this port. ESI has tested the following Viking
of overhead pagers: CPA-7A and PZ-4.
Audio connection
The audio pair is connected to the 66 block at terminal 33 and 34. The pair's impedance is
600 ohms.
Dry contact control
The manner in which the dry contact pair is punched down on the 66 block sets the pair as nor-
mally 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 IVX as follows:
• Terminals 35 and 36 to provide normally open operation;
or
• Terminals 35 and 37 to provide normally closed operation.
Amphenol cable connections
Connect a standard 66 block to the cabinet using a male 50-pin amphenol cable to the female
connector located on the bottom-right side of the cabinet.
Data transmit Pin 2
Receive
Pin 3
Ground Pin 5
Hardware overview/installation
®
models
B.9