ZyXEL Communications P-2024 User Manual page 125

3 Connect another telephone to the port to check whether you have a faulty telephone. If
this does not help, try connecting the telephone to another of the P-2024's ports and
check for a tone.
4 If you are using a Telco-50 cable other than the one provided, ensure that it has the
correct pin assignments. See the appendix on product specifications for the correct pin
assignments.
If none of the above helps, your P-2024 may have a hardware problem. Contact your vendor.
I can hear a tone when I lift the receiver of a phone connected to the P-2024,
but I cannot make or receive calls.
Try using another phone, another phone port, and/or another SIP account in order to isolate the
problem. If this does not help, do the following.
1 If you have not already done so, check that you connected the hardware as described in
the Quick Start Guide, and that the P-2024's LEDs are behaving as expected (see
1.4.2 on page
2 Ensure that the P-2024 has a successful Internet connection. Check its current settings in
the Status screen's Device Information and Interface Status boxes. If the settings are
not correct, change them in the Network > WAN screen.
3 Connect another telephone to the port to check whether you have a faulty telephone. If
this does not help, try connecting the telephone to another of the P-2024's ports, check
for a tone, and try to make a call.
4 Check that the phone port is using the correct SIP account. Go into the web configurator
and check the Status screen. Click the VoIP Mapping tab if it is not already open.
If the port uses the wrong SIP account, change the association in the VoIP > Phone >
Analog Phone screen.
Alternatively, try configuring the port to use another SIP account that you know works.
5 Check that the SIP account has registered (look at the icon in the Status > VoIP
Mapping screen).
If it has not registered, click the VoIP Status tab and then click the Register button for
that account (also check that the URI is correct in this screen).
If this does not help, check the SIP account's settings in the VoIP > SIP > SIP Settings
screen and make sure they are correct.
6 The P-2024's DNS (Domain Name Service) settings may be wrong, or the DNS servers
themselves may be malfunctioning. Check the P-2024's DNS settings in the Network >
WAN > Advanced screen. If you have the details of other DNS servers, change the
settings to use them instead.
If the steps above do not help, contact your Internet Service Provider and/or your VoIP
service provider.
• If you have more than one SIP account and you can use one but not the other, contact
your VoIP service provider.
• If you have SIP accounts with more than one VoIP service provider and can use none
of them, contact your Internet Service Provider.
P-2024 User's Guide
29).
Chapter 13 Troubleshooting
Section
125