ZyXEL P-2612HNU-F3F User Guide - Page 293
Phone Calls and VoIP
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Chapter 27 Troubleshooting • Obstacles: walls, ceilings, furniture, and so on. • Building Materials: metal doors, aluminum studs. • Electrical devices: microwaves, monitors, electric motors, cordless phones, and other wireless devices. To optimize the speed and quality of your wireless connection, you can: • Move your wireless device closer to the AP if the signal strength is low. • Reduce wireless interference that may be caused by other wireless networks or surrounding wireless electronics such as cordless phones. • Place the AP where there are minimum obstacles (such as walls and ceilings) between the AP and the wireless client. • Reduce the number of wireless clients connecting to the same AP simultaneously, or add additional APs if necessary. • Try closing some programs that use the Internet, especially peer-to-peer applications. If the wireless client is sending or receiving a lot of information, it may have too many programs open that use the Internet. • Position the antennas for best reception. If the AP is placed on a table or floor, point the antennas upwards. If the AP is placed at a high position, point the antennas downwards. Try pointing the antennas in different directions and check which provides the strongest signal to the wireless clients. 27.6 Phone Calls and VoIP The telephone port won't work or the telephone lacks a dial tone. 1 Check the telephone connections and telephone wire. I can access the Internet, but cannot make VoIP calls. 1 The PHONE light should come on. Make sure that your telephone is connected to the PHONE port. 2 You can also check the VoIP status in the System Info screen. 3 If the VoIP settings are correct, use speed dial to make peer-to-peer calls. If you can make a call using speed dial, there may be something wrong with the SIP server, contact your VoIP service provider. P-2612HNU(L)-FxF User's Guide 293