D-Link DSL-2740M User Manual

92D-Link DSL-2740M User Manual
Section 5 - Troubleshooting
You should start at 1472 and work your way down by 10 each time. Once you get a reply, go up by 2 until you get a fragmented packet. Take that
value and add 28 to the value to account for the various TCP/IP headers. For example, lets say that 1452 was the proper value, the actual MTU size
would be 1480, which is the optimum for the network we’re working with (1452+28=1480).
Once you nd your MTU, you can now congure your router with the proper MTU size.
To change the MTU rate on your router follow the steps below:
• Open your browser, enter the IP address of your router (192.168.1.1) and click OK.
• Enter your username (admin) and password (sometimes blank by default). Click OK to enter the web conguration page for the device.
• Click on Setup and then click Manual Congure.
• To change the MTU, enter the number in the MTU eld and click Save Settings to save your settings.
• Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments of ten.

D-Link DSL-2740M Specifications

Ports & Interfaces

RJ-11 ADSL port	1
RJ-45 Ethernet ports	4
Wireless Interface	IEEE 802.11n/g/b

Wireless Specifications

Wireless Bandwidth Rate IEEE 802.11b	11, 5.5, 2, and 1 Mbps
Wireless Bandwidth Rate IEEE 802.11g	54, 48, 36, 24, 18, 12, 9, and 6 Mbps
Wireless Bandwidth Rate IEEE 802.11n 20 MHz	150, 130, 117, 104, 78, 52, 39, 26, 13 Mbps
Wireless Bandwidth Rate IEEE 802.11n 40 MHz	300, 270, 243, 216, 162, 108, 81, 54, 27 Mbps

Operating Environment

Operating Humidity	0% to 90% non-condensing
Non-Operating Humidity	5% to 95% non-condensing
Operating Temperature	0 to 40 °C (32 to 104 °F)
Non-Operating Temperature	-20 to 65 °C (-4 to 149 °F)

Power

Input Voltage	100~240 V AC (±20%), 50/60 Hz
Output Voltage	12 V DC
Output Current	0.5 A

Weight and Dimensions

Dimensions	160 x 120 x 25 mm (6.30 x 4.72 x 0.98 inches)
Weight	205 grams (7.2 ounces)