Zyxel V301-T1 [161/240] Phone calls and voip

Zyxel V301-T1 [161/240] Phone calls and voip
Chapter 16 Troubleshooting
V300 Series User’s Guide
161
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 Section
2.2 on page 32.
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.
1 The V300’s SIP settings may be misconfigured. Check your SIP settings and re-
enter them if necessary (see Section 6.3 on page 60 for details).
2 If No Reg still displays, check your network settings (see Section 5.5 on page 55).
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.
1 Check your DNS (Domain Name Service) settings (see Section 5.5 on page 55).
If you use a static IP address, see Section 6.6 on page 71 for how to change
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.
2 Make sure that your V300 uses the voice codecs recommended by your VoIP
service provider (see Section 6.5 on page 71).
I can make some VoIP calls, but not others.

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