CHAPTER 2: Installation and Connection

Note: Appendix A lists some basic and specific troubleshooting actions to take if your Modem is not operational.

2.3 Is Your Series II Modem Ready for Use?

As soon as you connected power to the modem, it performed a diagnostic self-test. The speed indicators flashed in sequence for approximately four seconds, then the 28.8 indicator is lit. The TR indicator should be lit as well. The SD, RD, CD, and OH indicators should remain off at this time. If not, check that the transformer is solidly connected and that your AC outlet is live.

If you’re an experienced modem user, you may simply want to check your modem’s settings for data compression, error correction, and so on. You may find that you can get moving quite quickly if you just issue an ATL5, ATL6 and an ATL7 command. These commands lists how your modem is currently configured. If you come across a setting you’re unsure of, refer to Chapters 5 and 6 of this manual for AT command and S-Register explanations and defaults.

If you’re a novice, please continue to the next sections of this chapter.

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Black Box MD1640A, MD1641A manual Is Your Series II Modem Ready for Use?