ZyXEL Communications V300 - Manual (Page 150)

Chapter 16 Troubleshooting
V300 User’s Guide
150
V
The Internet connection is slow or intermittent.
1 There might be a lot of traffic on the network. Check Section 2.1 on page 31 . If the V300
is sending or receiving a lot of information, try closing some programs that use the
Internet, especially peer-to-peer applications.
2 Check the signal strength. If the signal strength is low, try moving the V300 closer to the
AP if possible, and look around to see if there are any devices that might be interfering
with the wireless network (for example, microwaves, other wireless networks, and so
on).
3 Reboot the V300.
4 If the problem continues, contact the network administrator or vendor, or try one of the
advanced suggestions.
16.3 Phone Calls and VoIP
V
I cannot make VoIP calls.
Ensure that your V300 is set up as shown in your Quick Start Guide and Section 2.1 on page
31 .
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 70 for details).
2 If No Reg still displays, check your network settings (see Section 5.2 on page 51 ). If
they are not correct, change them using information supplied by your ISP or network
administrator (see
Section 6.2 on page 65 ). 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 5.2.2 on page 52 ).
• If you use a static IP address, see Section 6.2.2 on page 67 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.