You didn't specify the model, but I will assume DX-80. both the DX-80 and 120 have the same default baud rates of 9600. Below are the instructions to check the rate via the phone
4.15.1 PROGRAMMING USING THE DET
Note: chg, bksp, save, one, always, del, and ack are interactive LCD button operations. Use the three
buttons below the LCD display to actuate the associated operation.
1. Enter Database Administration using the feature code Feature # * and then enter the admin
password.
2. Press show. The system displays the DB Item Select screen.
3. Enter 04-16 and press save. This advances you to the RTM X RATE field.
4. Press chg to select the transmission rate between your laptop and the DX-80 switch. Valid
choices include 1200, 2400, 4800, 9800, and 19200. The default is 9600.
5. Press save.
