ZyXEL Communications P-2608HWL-D1, User Manual

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P-2608HWL-Dx Series User’s Guide
Chapter 29 Troubleshooting 359
Figure 210 Java (Sun)
29.5 Telephone Problems
Table 140 Troubleshooting Telephone
PROBLEM CORRECTIVE ACTION
The telephone port
won’t work or the
telephone lacks a
dial tone.
Check the telephone connections and telephone wire.
Make sure you have the
VoIP SIP Settings screen properly configured.
I can access the
Internet, but
cannot make VoIP
calls.
Make sure you have the VoIP SIP Settings screen properly configured.
One of the PHONE lights should come on. Make sure that your telephone is
connected to the corresponding PHONE port.
You can also check the VoIP status in the Status screen.
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.
I cannot call from
one of the ZyXEL
Device’s phone
ports to the other
phone port.
You cannot call the SIP number of the SIP account that you are using to make a
call. The ZyXEL Device generates a busy tone and does not attempt to establish
a call if the SIP number you dial matches the outgoing SIP number of the phone
port you are using.
For example, if you set
Phone 1 to use SIP account 1 and set Phone 2 to use
SIP account 2, then you can use Phone 1 to call to SIP account 2's SIP number
or Phone 2 to call to SIP account 1's SIP number.