ZyXEL Communications P-2304R-P1 Series - Manual (Page 219)

Chapter 21 Troubleshooting
P-2304R-P1 Series User’s Guide
219
The username and password apply to PPPoE encapsulation only. Make sure that you
have entered the correct Service Type, User Name and Password (be sure to use the
correct case). Refer to
Section 6.2 on page 77 .
21.4 Phone Calls and VoIP
V
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.
V
I can access the Internet, but cannot make VoIP calls.
1 Make sure you have the VoIP SIP Settings screen properly configured.
2 One of the PHONE lights should come on. Make sure that your telephone is connected
to the corresponding PHONE 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.
V
I cannot call from one of the ZyXEL Device’s phone ports to the other phone
port.
1 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.