Feedback / status of the network
After making the project public to the members of the Faculty of Engineering, we received a lot of response. We were a bit overwhelmed by the huge interest in our project. It was probably caused by the title of the e-mail "free phone calls via RZ-GSM" ;-) The day after going public we were busy fixing some bugs and answering a lot of e-mails. However, I was happy about every person who contacted us, and I still am glad to hear from you.
Some users were asking about privacy within this network. The main question was: "Do you record or store the speech data of a call?" The answer simply is: NO.(I added this to the FAQs).
Here's a graphic that shows the usage of the network:
- The software is running stable after we fixed some null pointers.
- SMS is not working
- Speech calls are working
- Incoming calls from the university telephony network are not working.
Since we are dealing with a lot more subscribers than during our tests, it is possible that you will not be able to reach anyone due to insufficient outgoing channels. Especially the channels to the mobile telephony networks are very limited at the moment.
The status quo is:
- German land line telephony network: 3 channels
- Mobile telephony networks: Vodafone, T-Mobile, O2, E-Plus: 1 channel per provider
- University internal telephones: 2 channels
- RZ-GSM internal: at most 3 calls at the same time
The basestation we are using supports up to 6 channels at the same time. This also explains why only 3 internal calls are possible at the same time (every internal call needs two channels).
We do recommend using a second mobile phone for the RZ-GSM network. This way you are still reachable on your ordinary number and at the same time you can use our free network.
We are planning to install a second basestation at the faculty to cover the whole area. The second basestation will be located in building 79. At the moment we are also measuring the received signal strength at different points to get some data on the coverage.
You can see the first results in this graphic:
green = good signal; red = bad signal