Phone Calls And Voip - ZyXEL Communications V300 Series User Manual

16.4 Phone Calls and VoIP

I cannot make VoIP calls.
Ensure that your V300 is set up as shown in your Quick Start Guide and
2.2 on page
Look at the LCD screen. If a SIP account is registered, its name appears here. If a
SIP account is not registered, No Reg displays.
If no SIP account is registered, do the following.
The V300's SIP settings may be misconfigured. Check your SIP settings and re-
1
enter them if necessary (see
If No Reg still displays, check your network settings (see
2
If they are not correct, change them using information supplied by your ISP or
network administrator. If this does not help, contact your ISP or network
administrator.
If a SIP account is registered, try to make the call. If you still cannot call out, do
the following.
Check your DNS (Domain Name Service) settings (see
1
• If you use a static IP address, see
DNS settings.
• If you use a dynamic IP address (DHCP) your DNS settings are controlled by
the DHCP server. The DHCP server may belong to your service provider, or it
may be on your network. If your V300 does not get DNS server information
automatically, check the settings on any hardware to which the V300 is
connected, or contact your ISP or network administrator.
• If you use PPPoE, your DNS settings are controlled by your Internet Service
Provider. If your V300 does not get DNS server information automatically,
contact your ISP.
Make sure that your V300 uses the voice codecs recommended by your VoIP
2
service provider (see
I can make some VoIP calls, but not others.
V300 Series User's Guide
32.
Section 6.3 on page 60
Section 6.5 on page
Chapter 16 Troubleshooting
for details).
Section 5.5 on page
Section 5.5 on page
Section 6.6 on page 71
71).
Section
55).
55).
for how to change
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