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Mon, 22 Jan 2018
Modify the VoIP provider of a Speedport ISDN Adapter

The Speedport ISDN Adapter is a relatively cheap VoIP-to-ISDN adapter from Deutsche Telekom. The drawback is that the adapter is "locked" to Deutsche Telekom and the user interface (web interface) is disabled.

Here is how you can access the web interface. While the adapter is already powered on, you have to press both the "Register" and "Reset" button at once for more than 20 seconds. This will temporarily enable a still limited web interface, just point your browser to the IP address of your ISDN adapter. The login password is the "device password" written on the bottom side of the case.

To fully enable the web interface you have to do a bit more. I use "curl" which is available for nearly all operating systems. You have to replace "12345678" with the device password and "" with the IP address of your adapter.

curl -d "login_pwd=1&pws=12345678" ""
curl -d "password=12345678&debug_enable=1&uart_tx_eb=1" ""

Now the web interface is fully functional and you can modify the settings, e.g. disable the TR-069 interface and enter the parameters for the VoIP account of your provider. "uart_tx_eb" enables the serial console, which offers a few debug commands. However you have to open the case to get access to the serial console.

[ /misc | permanent link ]

Sun, 21 Jan 2018
More LTE Base Stations

Since running my first own LTE eNodeB in 2013, I acquired a few more. I now have one from NSN, Ericsson and Huawei. All of them are fully functional including the required Remote Radio Heads to actually transmit.

Operating an LTE eNodeB is not very complicated, these days it is even easier with software like NextEPC. The tricky part is setting up and configuring the LTE eNodeB because there is no standard to do so and every manufacturer has its own way. If you are lucky, you might get an already configured system and there is not much you have to adjust. If your system is new or the configuration has been erased, than it can get complicated, at least for the Ericsson eNodeB I have.

[ /gsm | permanent link ]