Section 11: Dial-Up Remotes Can't Dial Out
- The most reliable tool for troubleshooting a dial-up connection is a plain old phone. (Note: You need two techs for this: one at the NOC and the other at the remote site.) Have the remote site tech dial into the master with an ordinary telephone and listen:
- Does it ring? If it doesn't, check your phone line.
- Does the master pick up?
- Do you hear the modem? Or do you hear a "This call cannot be completed" message?
What's going on: Remote sites often aren't allowed to call long-distance. If the remote site and the NOC are in different area codes, you may not be able to connect.
- If the phone line is OK, try dialing into the master using a PC running HyperTerminal. The master will try to resolve the HyperTerminal connection as if it were the remote dialing in to report an alarm.
- Watch the HyperTerminal window. Check if you get a connect message. Check if you're connecting at the correct baud rate.
- If you still can't connect, troubleshoot the master's modem.
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