User's Manual

Chapter 24Troubleshooting
MAX-200HW2 Series User s Guide
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Check your WiMAX link and signal strength using the LINK and SIGNAL LEDs on the device. See the
following section if signal strength is poor or the ZyXEL Device has no link to a base station.
Contact your ISP if the problem persists.
24.4 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.
2 Make sure you have the VoIP SIP Settings screen properly configured.
I can access the Internet, but cannot make VoIP calls.
1 Make sure you have the VoIP SIP Settings screen properly configured.
2 The VoIP LED should come on. Make sure that your telephone is connected to the
LINE port.
3 You can also check the VoIP status in the Status screen.
4 If the VoIP settings are correct, use speed dial to make peer-to-peer calls. If you cannot
make a call using speed dial, there may be something wrong with the SIP server. Contact
your VoIP service provider.
Problems With Multiple SIP Accounts
You can set up two SIP accounts on your ZyXEL Device. By default your ZyXEL Device uses
SIP account 1 for outgoing calls, and it uses SIP accounts 1 and 2 for incoming calls. With this
setting, you always use SIP account 1 for your outgoing calls and you cannot distinguish
which SIP account the calls are coming in through. If you want to control the use of different
dialing plans for accounting purposes or other reasons, you need to configure your phone port
in order to control which SIP account you are using when placing or receiving calls.
24.5 Reset the ZyXEL Device to Its Factory Defaults
If you reset the ZyXEL Device, you lose all of the changes you have made. The ZyXEL
Device re-loads its default settings, and the password resets to 1234. You have to make all of
your changes again.