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Harald Welte laforge at gnumonks.orgOn Thu, Feb 28, 2013 at 05:54:27PM +0300, Akib Sayyed wrote: > I tried studying TSM code layer1 and Osmocom layer1 for purpose of > implementing them in cellphone it self but i as far as i know that init of > some variables required for amr are completed but couldnt be able to > figure out what exactly part remaining . I remain with what I stated before: you first need to understand the detailed operation of AMR in the context of GSM by studying the specs. I'm mostly talking about the encoding of the various bits, signalling of codec mode changes, etc. - not the mathematical background of the actual voice codec. It might also help to study related documents like the IF2 and RTP formats for AMR. Only with that backgorund knowledge _and_ knowledge of the TSM30 L1 code as well as traces from actual AMR calls on A-bis and possibly Um, I think you will be in a position to fully understand the porblem and implement what is needed. Asking for somebody to explain every little detail for you is not the way to solve any problem. If Sylvian, Dieter, Andreas or I sit down, read the code + dosc, and give minute instructions what needs to be done, this consumes more of our time than if we actuall implement it ourselves. If you have _specific_ technical questions, please come back to the list. If you have a specific question, please include a precise reference to the chapter/section of the specification (+ exact version of the document), the exact function or data structure you refer to. -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)