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Sandi Suhendro djks74 at gmail.comI tested using original firmware. On Fri, Sep 14, 2018 at 6:53 AM Mychaela Falconia < mychaela.falconia at gmail.com> wrote: > Sandi Suhendro <djks74 at gmail.com> wrote: > > > Voice is working actually since back then, my fault is using only > > C117/118 for test call all the time. > > Now I just test using newer phone both Caller and Callee and voice is > > work perfectly! > > [...] > > There is trace in wireshark when using old phone as C117/118, the BTS > > always freeze and send Measurement Indication all the time when calling > > is made and answered, but with newer phone, the Indication is normal. > > In your tests with C117/118 phones that produced failing results, were > those phones running OsmocomBB or Motorola's original firmware? If > Motorola phones running their original firmware (which presumably had > passed official certification and type approval tests back in the day) > don't work with Osmocom networks (be it LimeSDR or other Osmocom- > compatible BTS hardware, SDR-based or otherwise) but "newer" (meaning > more proprietary and more thoroughly locked down) phones do work, then > it is a very grave problem from the perspective of Freedom, and needs > to be taken very seriously. > > Sysmocom has two of my FreeCalypso development boards, only one of > which has been calibrated with a CMU200 instrument and fc-rfcal-tools > before leaving my shop - the other board did not receive calibration > because Harald claimed it early in the bring-up process, before I had > climbed the calibration learning curve and developed my calibration > programs. Looking at the photo in issue #2704: > > https://osmocom.org/issues/2704 > > The board you've got set up there is the one that did get properly > calibrated before being sold to Sysmocom. Like all boards from that > batch, it was shipped with an official FreeCalypso firmware image in > its flash - based on the date it was shipped, it was probably the > 20170831 build. Do you still have that firmware image in the flash, > or have you erased it? Where is the RF from that board connected to - > does it go to a sysmoBTS unit? Would it be possible for someone from > Sysmocom (or someone from the community who have been set up with > remote access to that board) to test and see if the FCDEV3B can > successfully connect to Osmocom network using the official FreeCalypso > firmware on the board, driven via AT commands? > > If Sysmocom folks are philosophically against doing any tests with > FreeCalypso firmware, would someone else in the community be more > willing? I am hoping to have the next batch of my boards (which will > also be at hardware revision V2) made in the next few months (more > precisely, as soon as I can afford the ~3kUSD cost of the new PCB fab > run for V2), and when I get those boards made, I plan on giving away a > limited number of them on a subsidized basis, free of cost to the > recipient. If anyone here is interested in pairing the source-enabled > (source freely published for all to see and to tinker with) network > side GSM implementation from Osmocom with the equally source-enabled > mobile side implementation from FreeCalypso (which is much more robust > and feature-complete than OsmocomBB), you may very well be eligible to > receive a subsidized FCDEV3B V2 board when they become available. > > Warm regards, > Mychaela Falconia, > Mother of FreeCalypso > > P.S. Regarding Sysmocom's other FCDEV3B board which you got before it > was calibrated, if you have a CMU200 instrument which is itself in good > calibration standing, you can calibrate the board yourself. The needed > software is here: > > https://bitbucket.org/falconian/fc-rfcal-tools > > Given your level of expertise with GSM RF, I trust that you should > have absolutely no difficulty with figuring out how to use my > calibration sw if you have the needed RF test equipment. > -- Best Regards, Sandi -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20180914/577c59be/attachment.htm>