Question about Arris SURFboard SBG900 (49402201900) Modem

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Cannot change wireless channel

Every time I try to change the wireless channel to anything else but 1, the AP disappears completely for all clients (3 laptops with different wireless cards), and can't even be reached if I enter the new information manually. Problem is, channel 1 receives too much interference to be usable in my location

Is there a workaround for this, or is this a known problem?

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Try to configer the same data in all 3 Lap Top.make sure
IP should not be the same.

Posted on Jan 06, 2008


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Access the setup page of the AP's and go to AP Mode, make sure that you choose the repeater and copy down the Wireless MAC address you obtained from the wireless router. To enable roaming, meaning your wireless computer/device will connect to the AP/router closest to its location, change the wireless channel on all three device for example WRT54G will be on channel 1, 1st AP as repeater on Channel 6 and the last AP to Channel 11 but the other settings must be the same(Wireless name(SSID) and Wireless Security).

Note: Setting up an AP as repeater to repeat or extend the signal of another AP that is set to repeater is not recommended since the signal will deteriorate due to the number of hops the packets will be sent.

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Sep 10, 2008 | Linksys Wireless-G WRT54G Router

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AP Mode Problems

Probably you have to learn that there are various people looking for an access of the internet through your facilities. Anyway, inorder to solve your problem these are the following recommendation I made just for you. Hope this will be helpful.

1.) How do I reset the EOC-3220 / EOC-3220 EXT / EOC-3220+ back to factory default settings? An RS-232 null modem serial cable is required for this procedure.
(where to buy it :

1. Connect the EOC-3220 to your computer with a null modem serial cable.

2. Start a HyperTerminal session: Click Start and then select Programs -> Accessories -> Communications -> HyperTerminal.

3. After the HyperTerminal window appears:
a. Give this new connection a name. Ex: EOC-3220.
b. Select correct COM port. Ex:COM1.
c. Set baud rate as "38400", data bits "8", parity "none", stop bits "1", and flow control as "None". Then press “OK” to bring up the HyperTerminal window.

4. Wait until the "#" is displayed in the HyperTerminal window.

5. Type "flash reset", then hit enter.

6. Type "reboot", then hit enter. After the device reboots, all settings will be at factory default.

Phase II

1.) Since that you already reseted the AP you need to use the default IP which is user: admin password: admin

2.) Make it sure you need to use different IP such as and the subnet:

3.) The idea of configuration in come from your own desire which was no body can no longer try to match your network IP so that there will be no body access your AP anymore without your knowledge.

4.) You need to make you SSID invisible to everyone inorder no body no longer able to reach your SSID by setting up basic setting which is transparent to everyone.

5) And lastly change the default user and password of your AP.

Good Luck

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1 Answer

Loses connectivity

Hi, a couple of ideas: 1. maybe out of range or too many obstruction, how far is the client from the AP or are there any objects in between. it's gotta be line of sight; 2. with 200mW power output and 5dBi external antenna, should be adequate, if not maybe slightly directional performance (no longer perfect omni). try rotating the device and more or less guesstimate max signal at a particular orientation (pointed towards the client). Netstumbler would be good enough for signal strength; 3. consider the optional integrated 9dBi patch antenna; 4. for the client having a hard time with the AP, manually enter the TCP/IP settings and not auto obtain. numbers should of course match AP settings except for the last digit(s) of the IP add; 5. try moving the client away from any RFI sources like cordless/wireless phones, microwave ovens and others; 6. at one time, signal strength to a client improved by moving the AP a couple of feet away from the original installation point. of course if your unit is mast mounted, then you have to move the mast as well or put up a new one. Hope this works for you. Good luck and pls post again how things turn up.

May 24, 2007 | EnGenius EL-2611CB5+ (NL2611CB5)

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