Changes between Version 1 and Version 2 of Nokia_APS_VAS_Direct


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Timestamp:
Jan 14, 2009 11:01:02 AM (12 years ago)
Author:
bennylp
Comment:

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  • Nokia_APS_VAS_Direct

    v1 v2  
    11= Using APS-Direct and VAS-Direct in PJMEDIA = 
     2 
     3 
     4'''Table of Contents''' 
     5[[PageOutline(2-3,,inline)]] 
     6 
    27 
    38The '''APS-Direct''' and '''VAS-Direct''' is our codenames for functionalities to use the hardware codecs that are supported by Nokia APS and/or VAS directly, bypassing media processing in PJMEDIA. This feature will be introduced in PJSIP version 1.1. 
     
    510APS stands for '''Audio Proxy Server''', and it is available as plug-in for Nokia S60 3rd Edition up to Feature Pack 2 version. This has been deprecated for FP2 devices and above, and it is being replaced by '''VoIP Audio Services (VAS)''', which is available as plug-in for S60 FP1/FP2 devices and will be available built-in in later S60 versions. 
    611 
    7 '''Table of Contents''' 
    8 [[PageOutline(2-3,,inline)]] 
    912 
    1013[[BR]] 
     
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     92=== Passthrough Codecs === 
     93 
     94While the actual codec encoding/decoding will be done by APS/VAS, "dummy" codec instances still need to be created in PJMEDIA: 
     95 - PJMEDIA needs the list of codecs supported to be offered/negotiated in SDP, 
     96 - some codecs have special framing requirements which are not handled by the hardware codecs, for example the framing rules of AMR codecs ([http://tools.ietf.org/html/rfc3267 RFC 3267]). 
     97 
     98Passthrough codecs will be implemented for: PCMA, PCMU, iLBC, G.729, and AMR-NB. 
     99 
     100 
     101== Using APS-Direct or VAS-Direct == 
     102 
     103TBD. 
     104 
     105 
     106== References == 
     107 
     108Internal documentations: 
     109 1. [wiki:APS Using APS in PJSIP] 
     110 1. [wiki:FAQ#symbian Known problems of PJSIP with APS and Symbian target in general] 
     111 1. [http://www.pjsip.org/pjmedia/docs/html/index.htm PJMEDIA and PJMEDIA-CODEC Documentation] 
     112 
     113External links: 
     114 1. [http://www.forum.nokia.com/info/sw.nokia.com/id/baae1f23-214a-42e0-96fc-aca65d86bcee/Audio_Proxy_Server_and_VoIP_Audio_Services_v1_0_en.pdf.html Audio Proxy Server and VoIP Audio Services (presentation)] 
     115 1. [http://wiki.forum.nokia.com/index.php/Audio_Proxy_Server Audio Proxy Server] 
     116 1. [http://wiki.forum.nokia.com/index.php/VoIP_Audio_Service_API Nokia VoIP Audio Service API] 
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