New answers tagged sip
I wrote a simple app specifically for this task: https://github.com/whitequark/SIPCaller
Not possible until we have source code of mobile device drivers responsible for radio communication, You can read a related article which describe that Why it is not possible to use phone as sip to gsm gateway. according that article Third hurdle to make Android work as a GSM Gateway is that vendor RIL is not open source. Every vendor has their own ...
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