User guide

Chapter 2 - Installation
10 Multi-Tech Systems, Inc. MT5656ZDX User Guide
About Power Connection, Surge Protectors, and Lightning
Power surges and other transient voltages on power lines, such as those caused by lightning strikes, can
damage or destroy your modem. Therefore, we recommend that you plug the modem into a surge protector
rather than directly into a wall outlet, preferably a surge protector that provides protection against electrical
spikes on the phone line as well as on the power line. Note that not even a surge protector can guard against
damage from a nearby lightning strike. During an electrical storm, it is safest to unplug your computer
equipment from both the power outlet and the phone line.
Power-On Test
Test the modem by turning it on (an on-off switch is located on the side panel). When you apply power, the
modem performs a diagnostic self-test. The PWR indicator lights; and if a terminal program is running, the TR
indicator also lights. If this does not happen, check that the power switch is on, the power supply is solidly
connected, and the AC outlet is live. If these measures do not work see the Troubleshooting chapter.
The Federal Communications Commission (FCC) and Industry Canada impose certain restrictions on equipment
connected to public phone systems. For more information, see Appendix A.
Connecting Voice (Voice option only)
1. Connect the Microphone
For voice mail or speakerphone applications, plug an unamplified microphone into the MIC jack on the side
of the modem. The microphone should have a stereo 1/8-inch (3.5mm) mini plug. Do not use a monophonic
microphone.
2. Connect the Speaker
For speakerphone or voice mail applications, use a 1/8-inch (3.5mm) plug male-to-male stereo patch cord to
connect the SPKR jack on the side of the modem to the LINE IN jack on your sound card. If your sound card
does not have a LINE IN jack, use its MIC jack. The stereo male-to-male patch cord can be purchased at a
local PC retail store.
If you do not have a sound card, you can plug an amplified speaker directly into the SPKR jack.