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Troubleshooting
Communication Errors
Chapter 6
O:\Manuals\E6385A_Cdma\Book\Trouble.fm
124
Troubleshooting Checks for Communication Problems
The following list provides items to check when you are having communication
difficulties using the external modem to connect to the MSC.
• Cable connections:
Make certain that you have made the proper connections between the Test Set serial
port, the phone line or telnet connection, and the personal computer (PC).
A list of cables and part numbers is provided in “Accessory Kits” on page 17.
• Dialing difficulties:
In some cases, you might have to customize the dialing information in order to
properly dial and connect to the MSC. For example, if there is a 9 in the dialing
sequence to obtain an outside phone line, there might be a short delay before the dial
tone is heard. Therefore, a delay after the 9 might be required before the rest of the
digits in the sequence are sent. This may be done from the Switch Terminal window
of the BTS Laptop Utility program. Clicking on the Dial button on the Switch
Terminal window tool bar, and add a comma between the numbers as shown in the
following example.
9, 1-509-835-0000
• MSC is not configured to send responses to commands:
After sending a control command to the MSC, the Test Software searches for response
commands from the MSC before continuing. It might be that the MSC with which the
system is communicating has been configured to not send responses to remote
computers. You might have to check with a switch technician to determine if this is
the case for the MSC in question.