Specifications

Installing the DX-80
66 Comdial October, ‘03
2.17 Connecting a Serial Cable for SMDR
SMDR (Station Message Detail Recording) can be output from the DX-80 system for use with serial
printers of collection in call accounting devices. Connection of the SMDR device to the DX-80 is
accomplished through the serial data port on the CPM labeled “SMDR.” Connection to serial printers
may require customization of the serial cable used to make the connection.
Whenever a call accounting system (third-party device) is deployed, connection is often no more com-
plicated than using a straight-through, 9-pin, female to male, serial cable. (Use Radio Shack model 26-
117B for good results.)
Connection to the PC/call accounting system is made via an available 9-pin serial port connector that is
designated as COM1 or COM2 in the PC configuration.
Once the cable is linked between the collection device and the DX-80 CPM-SMDR port, the collection
device must be programmed for compatible link protocol (baud rate). At default the SMDR port baud
rate is set at 9600 bps.
Follow these steps to connect a serial cable for SMDR:
1. Remove the KSU cover (four screws at each corner) of KSU1.
2. Connect a static discharge wrist strap to a suitable earth ground. Be sure that the strap is touch-
ing bare skin.
SMDR 9-pin Serial Cable Pin Designations
1 2 3 4 5 6 7 8 9
DCD RXD TXD DTR GND DSR RTS CTS RI
CPM
“SMDR” serial port connector
(straight-
(Dedicated means that this AC
outlet has no other equipment
connected on this circuit
breaker.