An ADSL MODEM is a broadband Internet access device, which utilizes the high frequency
segment of the phone line to transmit high-speed data without affecting the voice transmission. The frequency of the ADSL signal is higher than that of voice, so voice and ADSL signal can coexist in one line by using a splitter to insulate each from the other. ADSL data transfer adapts the asymmetry model. It supports upload transmission speed up to 1Mbps and download speed up to 8 Mbps (24Mbps for ADSL2+). ADSL is an ideal device for broadband access.
1.2 ABOUT ADSL2/2+
Transmission performance of ADSL2 is improved comparing with the first generation of ADSL.
These improvements are mainly concerned with long distance, anti-line-loss, anti-noise, etc. By doubling the transmission bandwidth, ADSL2+ has implemented a downlink rate as high as 24 Mbps. Therefore, Internet applications such as synchronous transmission of multi video stream, online games and huge capacity of downloading files are made possible.
1a Support ANSI T1.413 ISSUE 2a ITU G.992.1 (G.DMT)a ITU G.992.2 (G.LITE)a ITU G992.3a
2a Web-based configuration and monitoring. 3a Support multiple PVCs. 4a Routing function. 5a NAPTa DHCP function.
A steady green light means the power connection works properly
Green, Indicates status of connection to the wireless device
A steady green light means DSL has good sync
Green, steady green means IP connected
Green, Indicates status of connection to the PC network card
Connected with phone line or â€śADSLâ€ť port of the splitter. To be connected to a PC network card by a straight-through network cable,
also can use a crossover cable to connect to Hub, Switch or Router. Press the reset button and turn on the power, then keep pressing the reset
button for 5 seconds. Then you can reset the modem with the default settings.
To turn on / off the power.
Connect with power adapter.
2.2 HARDWARE CONNECTION
1a Use a telephone cord to connect the LINE port of the splitter with the RJ-11 port (the phone
jack) on the wall.
2a Use another telephone cord to connect the ADSL port of the splitter with the LINE port of the
3a Use another telephone cord to connect the telephone set with the PHONE port of the splitter.
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4a Connect Ethernet port of the ADSL MODEM with 10/100BASE-T port of the computer using
the network cable that comes with the modem.
5a Plug in the power cord, and turn on the power.
If you do not want Internet services and telephone voice services simultaneously, please just
connect the LINE port of the ADSL Modem with the RJ-11 port (the phone jack) on the wall using a telephone cord. In this case, the splitter is not necessary.
2.3 LED STATUS INDICATION
Table 2.3 Status POWER WLAN DSL INTERNET ETHERNET (Green) (Green) (Green) (Green) (Green)
The modem is in
PC network card
Connection not set
Not Connected with
PC network card
- 5 - D-Link DSL-2600U Manual 3. CONFIGURATION 3.1 DEFAULT CONFIGURATION
ADSL MODEM has pre-configured with the VCI/VPI which is in common use. The default dial-up
mode is bridge encapsulation. For bridge mode, no need to configure any more parameter. However, the third party dial-up software is needed for connection with the Internet.
3.2 COMPUTER CONFIGURATION
The default IP address for ADSL MODEM is: 192.168.1.1; The Subnet Mask is 255.255.255.0.
Users can configure ADSL MODEM through an Internet browser. ADSL MODEM can be used as gateway and DNS server; users need to set the computerâ€™s TCP/IP protocol as follow:
1a Set the computer IP address at same segment of ADSL MODEM, such as set the IP address
of the network card to one of the â€ś192.168.1.2â€ťj â€ś192.168.1.254â€ť.
2a Set the computerâ€™s gateway the same IP address as the ADSL Modemâ€™s. 3a Set computerâ€™s DNS server the same as ADSL Modemâ€™s IP address or that of an effective
3.3 ADSL MODEM CONFIGURATION
3.3.1 LOG IN
Open the browser; input http://192.168.1.1 at the address column. Press â€śEnterâ€ť key then the
entry dialog box will show up as Figure 3.1. Input Username: admin, Password: admin (capital sensitive), then press Enter.
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3.3.2 SAVE SETTING
After getting through each page for parameters setting, click â€śSaveâ€ť or â€śSave applyâ€ť to store the
value in ADSL MODEM. Briefly, we named â€śSaveâ€ť.
Note When you save the settings, the web page will be refreshed slowly, please wait it until finished. After you save the settings, it will take effect until next reboot. Some settings only take effect after rebooting the router.
3.4 WAN CONFIGURATION
If the configuration is bridge encapsulation, there is no need to configure any more parameters.
Only need to use the third party dial-up software to connect the Internet.
Totally, this router supports PPPoAa PPPoEa MERa IPoAa Bridging. For detail configuration
information, please check the following configuration guide.
3.4.1 CONFIGURATION GUIDE
Click â€śWANâ€ť on the left page, enter into â€śWide Area Network (WAN) Setupâ€ť configuration page. Note: At most we can have eight connections. If you need to add a new connection, please delete or modify an existing connection.
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Click on the next connection which you want modify. Press â€śEditâ€ť button, enter the configure guide,
as Figure 3.3
The value for VPI/VCI is assigned by your ISP. After inputting the PVC value, press â€śNextâ€ť into
â€śConnection Typeâ€ť. As Figure 3.4.
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D-Link DSL-2600U Manual
The Modem supports five ADSL protocol modes. Choose the protocol which is appointed by ISP and PVC encapsulation, click â€śNextâ€ť enter to the protocol configure. Below, we introduce the configuraion of the five protocol modes. â€˘ PPP over ATM (PPPoA) â€˘ PPP over Ethernet (PPPoE) â€˘ MAC Encapsulated Routing (MER) â€˘ IP over ATM (IPoA) â€˘ Bridging
Some connection lines need to confirm the LLC or VC, if you canâ€™t confirm, please donâ€™t modify
the default value or ask your ISP.
3.4.2 RFC1483 BRIDGE CONFIGURATION
Select the Bridging mode. Then press â€śNextâ€ť to specify the Service Name, and select the â€śEnable Bridge Serviceâ€ť as Figure 3.5.
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D-Link DSL-2600U Manual
Press â€śNextâ€ť to enter into â€śWAN configurationâ€ť, click â€śsaveâ€ť to save configuration, if you need to
modify the parameter, click â€śbackâ€ť as Figure 3.6.
Note When you use bridge mode, please close â€śDHCP SERVERâ€ť, the result as Figure 3.7
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3.4.3 PPPOE CONFIGURATION
PPPoE is also known as RFC 2516. It is a method of encapsulating PPP packets over Ethernet. PPPoA is also known as RFC2364 and named as Peer to Peer Protocol over ATM. As PPPoE, it
also has all the features of PPP. Although itâ€™s based on ATM protocol, the setting of all the other parameters is similar with PPPoE. So we only introduce PPPoE in detail here.
In Figure 3.4, select PPP over Ethernet (PPPoE), press â€śNextâ€ť entering the configuring interface,
as Figure 3.8.
PPP Username: Your account from ISP to access Internet. PPP Password: Input the password assigned by your ISP. PPPoE server Name: Server name of network ISP. No need to set. Authentication
Authentication mode of network ISP. Default is AUTO.
Dial on demand: When this mode is selected, the connection that has no traffic within assigned
disconnect timeout (e.g. 1 minute) will be automatically disconnected. The connection will be activated again when traffic arrives. This function is advantageous for users who are charged with online time. It should be noticed that some programs automatically link to Internet. Computer will send data to network when infected by virus. Connection will not be disconnected under these data streams.
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Inactivity Timeout: When â€śDial on demandâ€ť is selected, this input box indicates that after how
long the connection will be disconnected in the absence of traffic. If the value is 0, connection will not be disconnected.
Press â€śNextâ€ť when configuration is finished. The following operation is same with Figure 3.5. Notice that PPPoE mode does not work until the modem is reset.
3.4.4 STATIC ADDRESS
In Figure3.4, select MAC Encapsulation Routing (MER), press â€śNextâ€ť, and the configuration can
be queried from your ISP, the result as Figure3.9.
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D-Link DSL-2600U Manual 3.5 WIRELESS CONFIGURATION
Press â€śWirelessâ€ť on the top of web pages to enter wireless section. You can select to configure
wireless setup, security and management.
3.5.1 WIRELESS SETUP
Click â€śBasicâ€ť on the left menu to setup basic wireless parameters. In default, check â€śEnable <
irelessâ€ť box to launch wireless AP.
SSID (Service Set Identifier): The mobile users cannot access WLAN until setting their SSID as the same value of the wireless ADSL. The SSID value of the ADSL is â€śdefaultâ€ť
Hidden Access Point: If checked, wireless station will no see SSID of the ADSL.
3.5.2 WIRELESS SECURITY
Press â€śSecurityâ€ť on the left menu to construct wireless security. You can select to configure WEP
encryption, Shared, 802.1x, WPA, and WPA2 authentication.
WEP Encryption Select â€śEnabledâ€ť of the WEP encryption list. You can enter WEP encryption page. Encryption Strength: Key length: 128bits or 64bits. Network Key 1-4: Up to four keys that are in form of hex digitals could be set. Mobile users canâ€™t access the AP if they havenâ€™t set the same key as AP. For 64bits and 128bits keys, you should input 10 and 26 hexadecimal digitals or 5 and 13 ASCII characters respectively. Every two digitals should be compared with others by a space character. For example: â€ś7890ABCDEFâ€ť (hexadecimal digitals) or â€śQWERTâ€ť (ASCII characters) for a key length of 64bits.
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802.1x Authentication Select â€ś802.1xâ€ť to enter 802.1x authentication page. The 802.1x authentication needs a Radius server in LAN. In this page, you can input Radius server IP address, port number and secret key.
3.5.3 WIRELESS MAC FILTER
In fact, the Access List function is just like MAC address filtering and selected to permit or forbid
access of wireless station with specified MAC address.
Method: select â€śAllowâ€ť or â€śDenyâ€ť mode, and click â€śAddâ€ť button, and input MAC address which
you want to allow or deny.
Notice: You only can select one of allow mode or deny mode.
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D-Link DSL-2600U Manual 4. OTHER CONFIGURATION 4.1 LAN CONFIGURATION
Configuration of Modemâ€™s IP address and password
4.1.1 CONFIGURATION OF MODEMâ€™S IP ADDRESS
As a network device, ADSL Modem has its own IP address and MAC address. The factory sets
the MODEM, at a default IP address of 192.168.1.1 and subnet mask of 255.255.255.0. The user can configure these addresses through the â€śLANâ€ť on â€śConfigurationâ€ť like this:
For example, change IP address to â€ś10.10.10.10â€ť. Click â€ťLANâ€ť, input â€śIP addressâ€ť: 10.10.10.10,
then â€śsubnet maskâ€ť: 255.0.0.0, the result is as Figure4.1, press â€śsaveâ€ť.
Figure 4.1 Note If you change IP address, it will take effect after you reboot the modem. You must use the new IP address to login.
4.1.2 DHCP CONFIGURATION
â€˘ clicko LAN p â€˘ clicko Enable DHCP Serverp â€˘ Define the â€śStart IP addressâ€ť and the â€śEnd IP addressâ€ť of DHCP server (for example, from 10.10.10.11 to 10.10.10.254). â€˘ Input the value of lease (Measured by the second, 0 indicates permanently valid).
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As Figure 4.2, open DHCP server, computer will set the IP Address of network card with one of the address 10.10.10.11 j 10.10.10.254.
Figure 4.2 Note When you use the DHCP Server, please pay attention to having multi-DHCP Server in one LAN.
4.2 PASSWORD CONFIGURATION
When you configure ADSL MODEM through an Internet browser, the system requires user name
and password to validate access permission. The factory sets the modem at a default username of â€śadminâ€ť and the password of â€śadminâ€ť. The username is unchanged. You can enter the â€śpasswordâ€ť on Configuration column to change the password.
Attention: please remember the password after change, otherwise you will not be
able to change configuration after saving setting
- 16 - D-Link DSL-2600U Manual 5. TROUBLESHOOTING 5.1 UNABLE TO ACCESS INTERNET
5.1.1 CHECK THE LINE AND THE DEVICE
1a Check the indicator of power supply is on, if not, Make sure the connection of power supply is
correct; Make sure the output of power supply is correct; Make sure the switch of power supply is turned on
2a Check the indicator of PC is on, if not, Make sure the connection of cable and network adapter;
Make sure that the correct cable is used;
3a Check the LINK LED to see if it is twinkling. If no fast twinkling is observed within 3 minutes,
please check whether phone line has been correctly placed; whether ADSL separator is correctly used. If multiple extensions have been installed, make sure that the separator is installed prior to the junction box of phone line. If the above items are confirmed and still no fast twinkling of WAN LED is observed, call the ISP to query whether ADSL service has been provided on your line;
4a Check the LINK LED to see whether it is unable to change status from fast twinkling to always
light, or whether it changes status to fast twinkling after sometime of always light. If these phenomena occur constantly, please contact your ISP with a demand to check lines and signal quality;
If there is no problem in the above items, the line and the device shall be working. Problems may
come from your computer configuration or device configuration.
5.1.2 CHECK YOUR CONFIGURATION
We explain here the configuration of PPPOE using Windows 2000 operation system as an
example. For other operation systems the process is similar.
1a Enter the device manager to check if Ethernet adapter is correctly installed. If any problem
exists, please re-installed it;
2a Check the configuration of Ethernet adapter in PC. Try to manually set IP address that is in
band 192.168.1.x without conflict. See 3.2;
3a Try to run command â€śping 192.168.1.1â€ť on command line mode. If the response returns â€śtime
outâ€ť, please check Ethernet connection and IP settings;
4a If this modem is reachable, try to run ping with a known outer IP, e.g. the DNS server IP of
ShangHai Online: â€śping 18.104.22.168â€ť.
If ping is reachable, there shall be no problems in the modem. Please see step 5; If ping is not reachable, see step 6 and check if the configuration is correct.
5a Please try to ping a certain outer URL, e.g. â€śping www.google.comâ€ť.
If ping is reachable, there shall be no problems in the network settings. Please check the
settings of the PC terminal, e.g. whether the security level is too high, or whether anti-virus firewall is installed;
If ping is not reachable, check the DNS setting of Ethernet adapter. See 3.2.
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Note 1 The precondition is that LAN settings in the modem has not been modified. Note 2 We usually start command line mode in Windows 2000 as follows: click on the â€śRUNâ€ť item of
Windows Start Menu, input characters â€ścmdâ€ť in the input box popped up with an â€śEnterâ€ť. The window subsequently popped up is the command line window.
Note 3 The returned values of ping command in the following format show the standard of â€śreachableâ€ť
6a If ping of the modem is reachable but ping of the outer fixed IP is unreachable, attention
should be concentrated upon device settings. Please enter the configuring interface following the instructions in this manual.
Check first the number of connections. If more than one connection exists, for troubleshooting , delete unused connections and remain the one connection you are using.
Check the connection to see whether correct â€śtypeâ€ť is selected. Itâ€™s normal to choose login type of PPPoE. When you use PPPoE to login, the following information should be provided: VPI and VCI, which can be queried from your ISP, user name and password.
Then make sure that â€śusing NATâ€ť and â€śdefault gatewayâ€ť have been selected with a tick. Check whether â€śconnect on demandâ€ť has been selected with a tick. If it is selected, the connection is activated only when traffic to outer networks arrives. If not selected, check â€śkeep connectionâ€ť, which should be set to 0 if you demand to keep connection
Make sure that the above parameters are saved after configuration. Internet is now available
since the configuration is properly done.