Hi,
Is is possible to record a specific call using osmocombb? I want to record a call being made on the osmocombb phone not to sniff calls over the air.
Best regards, Robert,
Hi Robert,
On Thu, Mar 03, 2016 at 07:47:36PM +0200, robert wrote:
Is is possible to record a specific call using osmocombb? I want to record a call being made on the osmocombb phone not to sniff calls over the air.
in a regular voice call (whether with original firmware of the phone, or with osmocombb's layer1.bin), the actual voice never leaves the DSP of the phone. So it is like
mic/speaker -> DSP (voice codec) -> DSP (channel coding) -> Radio
So the voice data never passes from the phone to your PC. The only configuration that does this, is when you use OsmocomBB as a channel for lcr.
You could of course modify the softwrae to pass (a copy of) the voice to the PC even in regular case. It's open source, after all ;)
Regards, Harald
Hi,
You could of course modify the softwrae to pass (a copy of) the voice to the PC even in regular case. It's open source, after all ;)
Getting the DL voice audio can be done by just modifying the open-source part.
But for the UL voice (i.e. your speak), you might also need to patch the DSP because AFAIR, there isn't any flag to get a copy of the microphone audio.
Cheers,
Sylvain
Hi,
So it is better if I use LCR for recording the call ? Or is it also not straightforward.
On Mar 5, 2016, at 8:31 AM, Sylvain Munaut 246tnt@gmail.com wrote:
Hi,
You could of course modify the softwrae to pass (a copy of) the voice to the PC even in regular case. It's open source, after all ;)
Getting the DL voice audio can be done by just modifying the open-source part.
But for the UL voice (i.e. your speak), you might also need to patch the DSP because AFAIR, there isn't any flag to get a copy of the microphone audio.
Cheers,
Sylvain
baseband-devel@lists.osmocom.org
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Harald Welte -
robert -
Sylvain Munaut