Unlocking BT 2Wire 2700HGV Business Hub (wireless router)

 

Contents > BT v5.29 firmware:

 

 

 


Adjusting Wireless Power Levels on BT v5.x firmwares (25 - 100+ mW)

 

Last updated: 1 Aug 2009

 

Contents:

 

 

Here are three different ways of changing the wireless power output of the 2700HGV hub.

 

Method 1 (Recommended):

(Added 23 Mar 09):  I've tested this on my hub with SingTel v5.29.117.3 and BT v5.29.107.12 recovery firmwares using IE7 and IE8.  This is by far the simplest method which I discovered only just recently, even though it was published by 'ydrol' on The-scream forums back in June 2007- see here for original thread.

http://home/xslt?PAGE=C05_POST&THISPAGE=C05&NEXTPAGE=C05&DEVNAME=wave0&NAME=pwrid&VALUE=4

or

http://192.168.1.254/xslt?PAGE=C05_POST&THISPAGE=C05&NEXTPAGE=C05&DEVNAME=wave0&NAME=pwrid&VALUE=4

 

Method 2:

This is the original method for changing the wireless power setting described by 'perpetualmotionuk'.  It involves using Opera web browser to temporarily re-instate the missing HTML source code for displaying a wireless power setting list box within the Wireless Settings setup page on the hub.

Click here for full details of the  procedure

Please also note that if you repeat this procedure, you will note the source code appears to have reverted back to its original unedited state.  This is perfectly NORMAL.  Changes made to the actual source code using Opera are NOT persistent.  However, the change in wireless power level is persistent and will only be lost if you perform a factory reset of the 2700HGV.

 

Method 3:

'RME' provided me with this alternative to Method 2 described above which he found works on his hub with BT v5.29.117.6 firmware.   Please note this method must be used each time you wish to change the wireless power level setting on the hub.  The setting is however saved and is not lost if the router is rebooted or switched off.

 

1. Download, install and use Opera web browser from www.opera.com. (Tested with Opera v9.62 on Windows XP computer)
2. Go to http://home/xslt?PAGE=J46&THISPAGE=J34&NEXTPAGE=J46  You may be prompted to enter your hub's password.
3. Right click on displayed web page, then choose 'Source' to bring up the source code in a new tabbed window. 
4. Press CTRL-F and locate the following text, by searching for this text:          // Pair [12] pwrid

 

 
}              // Pair [12] pwrid
              if (document.pagepost.pwrid) {
                  document.pagepost.VALUE[12] .value = document.pagepost.pwrid.value;
              } else {
                  document.pagepost.NAME[12] .value = '';

                  document.pagepost.VALUE[12] .value = '';
              }
              document.pagepost.submit();
          }
 

 

5. Change the above code simply by highlighting and deleting the 5 lines shown above in red.   Remove the pair of single quotes shown in blue and  replace with a value between 1 to 4.  If you have edited the code correctly, it should look like the example below:
 

 

}              // Pair [12] pwrid
             
                  document.pagepost.VALUE[12] .value = 4;
             
              document.pagepost.submit();
          }
 

 

6. Press 'Apply Changes' button, then tab back to the original web page.  The original web page will appear to be unchanged - this is perfectly normal (ie. don't expect to see any fancy wireless power menu options).  Now simply press the 'Submit' button.

7. The wireless power level change takes effect immediately.  You may observe the wireless signal disconnect momentarily.  

8. Now proceed to the next section to check that the changes you have made have taken effect.

Please also note that if you repeat this procedure, you will note the source code appears to have reverted back to its original unedited state.  This is perfectly NORMAL.  Changes made to the actual source code using Opera are NOT persistent.  However, the change in wireless power level is persistent and will only be lost if you perform a factory reset of the 2700HGV.

 

 


Checking the Detailed Logs

The wireless power level change takes effect immediately, however the new wireless power may not necessarily be displayed immediately when you examine the very last entries in the Detailed Logs - you may need to wait for other log entries to appear in the Detailed Logs before you can see the line containing the phrase 'Wireless Power set to' appear.  If in doubt, reboot the router to empty the log, and the new wireless power level will be displayed in the Detailed Logs as in example shown below.   

Use a web browser and navigate to:                home/mdc    

Look down the left hand side menu options and right at the bottom of the page, click on:        Detailed Logs         

Extract from Detailed Log is shown below:

       

 

Effect of alternative settings:

Please note that on v5.x firmwares on Dual SSID hubs, values of Wireless power above 100(mW) reported in the Detailed log are misleading. 

 

 

Wireless Power Settings above '4'

On Dual SSID hubs running v5 firmware, it has been observed by many people when the hubs first appeared, that setting the wireless power setting to any value above '4' (equating to 100mW) appeared to offer little or no improvement.   Unlike Single SSID hubs running v4 firmware where there is a Massive difference in measured wireless power emissions between setting of '4' (100mW) and '8' (300mW).

Recently Simon observed when using his Dual SSID hubs running BT v5.x firmware, he was convinced there was a measured improvement in wireless power emissions if a value of '10' is used compared to a value of '4'.  However, the difference was very small, between 5 and 10%. 

At first I was sceptical, but after conducting some tests of my own recently using SingTel v5.29.117.3 firmware, I can confirm Simon's observations where if a power setting of '10' is used, there is a very small improvement in wireless power emissions from the hub compared to a setting of '4'.  Under the particular test conditions, there was a measured improvement of about 1dB reported by Netstumbler.

The maximum wireless power output of a Dual SSID hub is not likely to be as high as 400mW.  But it would appear it is likely to be higher than 100mW.

The SingTel v5.29.117.3 firmware offers wireless power menu settings up to '6' which equates to 200mW.  This figure of 200mW may perhaps be an indication of the maximum wireless power that is available from Dual SSID hub running v5.x firmware.

 

             

 


Previous Page: BT Provisioning Server Settings            Next Page:    VOIP Settings

Use 'Back' button to return to previous page or click here to return to main menu