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D-Link DSL-2870B Dual Band Wireless N750 Gigabit ADSL2+ Modem Router User Manual
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Frequently Asked Questions
What can I do if my Router is not working correctly?
There are a few quick steps you can take to try and resolve any issues:
Check that all the cables are firmly connected at both ends.
Check that all the corresponding LED indicators are on, especially the Power, DSL, and LAN LED indicators. For more information about LED indicators refer to the
Front Panel
on page 6.
Ensure that the settings on the WAN Service page in the Web User Interface are the same as the settings that have been provided to you by your ISP. For more
information refer to
WAN Se
on page 34.
Why can’t I get an Internet connection?
For ADSL ISP users, please contact your ISP to make sure the service has been enabled/connected by your ISP and that your ISP username and password are correct.
What can I do if I forgot my web UI login password?
If you forgot your password, you must reset your router. Unfortunately this process will change all your settings back to the factory defaults.
To reset the router, locate the reset button (hole) on the rear panel of the unit. With the router powered on, use a paperclip to hold the button down for 10-15 seconds.
Release the button and the router will go through its reboot process. Wait about 30 seconds to access the router. The default IP address is
192.168.1.1
. When logging in, the
username is ‘
admin
’
and the password is ‘
admin’
.
Page 142 / 143
D-Link DSL-2870B Dual Band Wireless N750 Gigabit ADSL2+ Modem Router User Manual
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Technical Specifications
Hardware Specifications
LAN Interface: Four 10/100/1000Mbps LAN ports
DSL Interface: One RJ11 Internet port
Wireless Interface (2.4Ghz): IEEE 802.11b/g/n
Wireless Interface (5Ghz): IEEE 802.11a/n
USB Interface: Complaint USB 2.0
Operating Voltage
Input: 100~240V (±10%), 50~60Hz
Output: DC12V, 1.5A
Temperature
Operating: 32
o
F~104
o
F (0
o
C~40
o
C)
Non-Operating: -4
o
F~149
o
F (-20
o
C~65
o
C)
Humidity
Operating: 10%~90% non-condensing
Non-Operating: 5%~95% non-condensing
ADSL Standards
ANSI T1.413 Issue 2
ITU G.992.1 (G.dmt) Annex A
ITU G.992.2 (G.lite) Annex A
ITU G.994.1 (G.hs)
ADSL2 Standards
ITU G.992.3 (G.dmt.bis) Annex A
ITU G.992.4 (G.lite.bis) Annex A
ADSL2+ Standards
ITU G.992.5 Annex A
ADSL Data Transfer Rate
G.dmt full rate downstream: up to 8 Mbps / upstream: up to 1 Mbps
G.lite: ADSL downstream up to 1.5 Mbps / upstream up to 512 Kbps
G.dmt.bis full rate downstream: up to 12 Mbps / upstream: up to 12 Mbps
ADSL full rate downstream: up to 24 Mbps / upstream: up to 1 Mbps
Wireless Frequency Range
IEEE 802.11a: 5150 MHz~5350 MHz
IEEE 802.11b: 2400 MHz~2497 MHz
IEEE 802.11g: 2400 MHz~2497 MHz
IEEE 802.11n: 2400 MHz~2497 MHz, 5150 MHz~5350 MHz
Wireless Bandwidth Rate
IEEE 802.11a: 54, 48, 36, 24, 18, 12, 9, and 6 Mbps
IEEE 802.11b: 11, 5.5, 2, and 1 Mbps
IEEE 802.11g: 54, 48, 36, 24, 18, 12, 9, and 6 Mbps
IEEE 802.11an: 6.5 to 450 Mbps
IEEE 802.11gn: 6.5 to 300 Mbps
Wireless Channel Numbers
IEEE 802.11a: Channels 36~64
IEEE 802.11b: Channels 1~11 (USA), 1~13 (Europe), 1~14 (Japan)
IEEE 802.11g: Channels 1~11 (USA), 1~13 (Europe), 1~14 (Japan)
IEEE 802.11n: Channels 1~11 (USA), 1~13 (Europe), 1~14 (Japan),
Channels 36~64
Antenna Type
Five Internal Antennas (Two 2.4 GHz Antennas, Three 5 GHz Antennas)
Page 143 / 143
D-Link DSL-2870B Dual Band Wireless N750 Gigabit ADSL2+ Modem Router User Manual
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Wireless Security
64/128bit WEP, WPA/WPA2-Personal, WPA/WPA2-Enterprise, WPS (PIN
& PBC)
Certifications
FCC P68/P15B, CE, A-tick.
Dimensions & Weight
213 x 173 x 52 mm (8.39 x 6.81 x 2.05 in)
405.52 grams (0.89 lbs)

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