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Chapter 23 Troubleshooting
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236
I cannot use FTP to upload / download the configuration file. / I cannot use FTP to
upload new firmware.
See the troubleshooting suggestions for
I cannot see or access the Login screen in
the web configurator.
Ignore the suggestions about your browser.
23.3
Internet Access
I cannot access the Internet.
1
Check the hardware connections, and make sure the LEDs are behaving as
expected. See the Quick Start Guide and
Section 1.6 on page 25
.
2
Make sure you entered your ISP account information correctly in the wizard. These
fields are case-sensitive, so make sure [Caps Lock] is not on.
3
If you are trying to access the Internet wirelessly, make sure the wireless settings
in the wireless client are the same as the settings in the AP.
4
If you are trying to access the Internet wirelessly, make sure you enabled the
wireless LAN and have selected the correct country and channel in which your
ZyXEL Device operates in the
Wireless LAN > AP
screen.
5
Disconnect all the cables from your device, and follow the directions in the Quick
Start Guide again.
6
If the problem continues, contact your ISP.
I cannot access the Internet anymore. I had access to the Internet (with the ZyXEL
Device), but my Internet connection is not available anymore.
1
Check the hardware connections, and make sure the LEDs are behaving as
expected. See the Quick Start Guide and
Section 1.6 on page 25
.
2
Turn the ZyXEL Device off and on.
3
If the problem continues, contact your ISP.
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Chapter 23 Troubleshooting
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The Internet connection is slow or intermittent.
1
There might be a lot of traffic on the network. Look at the LEDs, and check
Section
1.6 on page 25
. If the ZyXEL Device 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 your computer
closer to the ZyXEL Device 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
Turn the ZyXEL Device off and on.
4
If the problem continues, contact the network administrator or vendor, or try one
of the advanced suggestions.
Advanced Suggestions
Check the settings for QoS. If it is disabled, you might consider activating it. If it
is enabled, you might consider raising or lowering the priority for some
applications.
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P-660HN-TxA User’s Guide
239
C
HAPTER
24
Product Specifications
The following tables summarize the ZyXEL Device’s hardware and firmware
features.
24.1
Hardware Specifications
24.2
Firmware Specifications
Table 94
Hardware Specifications
Dimensions
133 x 61 x 163 mm
Weight
215g
Power Specification
12VDC 1A
Built-in Switch
Four auto-negotiating, auto MDI/MDI-X 10/100 Mbps RJ-45
Ethernet ports
ADSL Port
1 RJ-11 FXS POTS port
RESET Button
Restores factory defaults
Antenna
1 internal antenna, 2dBi
WPS Button
1 second: turn on or off WLAN
5 seconds: enable WPS (Wi-Fi Protected Setup)
Operation
Temperature
0º C ~ 40º C
Storage Temperature
-20º ~ 60º C
Operation Humidity
20% ~ 90% RH
Storage Humidity
20% ~ 90% RH
Table 95
Firmware Specifications
Default IP Address
192.168.1.1
Default Subnet Mask
255.255.255.0 (24 bits)
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Chapter 24 Product Specifications
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240
Default Admin
Password
1234
DHCP Server IP Pool
192.168.1.32 to 192.168.1.64
Static DHCP
Addresses
10
URL Filtering
URL web page blocking
Static Routes
16
Device Management
Use the web configurator to easily configure the rich range of
features on the ZyXEL Device.
Wireless
Functionality
(wireless devices
only)
Allow the IEEE 802.11b/g/n wireless clients to connect to the
ZyXEL Device wirelessly. Enable wireless security (WEP, WPA(2),
WPA(2)-PSK) and/or MAC filtering to protect your wireless
network.
Firmware Upgrade
Download new firmware (when available) from the ZyXEL web site
and use the web configurator to put it on the ZyXEL Device.
Note: Only upload firmware for your specific model!
Configuration Backup
& Restoration
Make a copy of the ZyXEL Device’s configuration. You can put it
back on the ZyXEL Device later if you decide to revert back to an
earl
i
er configuration.
Network Address
Translation (NAT)
Each computer on your network must have its own unique IP
address. Use NAT to convert your public IP address(es) to multiple
private IP addresses for the computers on your network.
Port Forwarding
If you have a server (mail or web server for example) on your
network, you can use this feature to let people access it from the
Internet.
DHCP (Dynamic Host
Configuration
Protocol)
Use this feature to have the ZyXEL Device assign IP addresses, an
IP default gateway and DNS servers to computers on your
network. Your device can also act as a surrogate DHCP server
(DHCP Relay) where it relays IP address assignment from the
actual real DHCP server to the clients.
Dynamic DNS
Support
With Dynamic DNS (Domain Name System) support, you can use
a fixed URL, www.zyxel.com for example, with a dynamic IP
address. You must register for this service with a Dynamic DNS
service provider.
IP Multicast
IP multicast is used to send traffic to a specific group of
computers. The ZyXEL Device supports versions 1 and 2 of IGMP
(Internet Group Management Protocol) used to join multicast
groups (see RFC 2236).
Time and Date
Get the current time and date from an external server when you
turn on your ZyXEL Device. You can also set the time manually.
These dates and times are then used in logs.
Logs
Use logs for troubleshooting. You can send logs from the ZyXEL
Device to an external syslog server.
Universal Plug and
Play (UPnP)
A UPnP-enabled device can dynamically join a network, obtain an
IP address and convey its capabilities to other devices on the
network.
Table 95
Firmware Specifications
(continued)

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