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;DSLAM
 
;DSLAM
 
:Digital Subscriber Line Access Multiplexer
 
:Digital Subscriber Line Access Multiplexer
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;DSP
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:Digital Signal Processor
    
;DTLS
 
;DTLS
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;DTX
 
;DTX
:Discontinuous Transmission - stops transmitting completely when silence is detected
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:Discontinuous Transmission is an audio codec feature that stops transmitting completely when silence is detected to save bandwidth (and thus traffic).
    
;DUNDi
 
;DUNDi
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;IPP
 
;IPP
:Integrated Performance Primitive by Intel http://trac.pjsip.org/repos/wiki/Intel_IPP_Codecs
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:Integrated Performance Primitive [http://trac.pjsip.org/repos/wiki/Intel_IPP_Codecs by Intel]
    
;ISN
 
;ISN
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;IVR
 
;IVR
:Interactive Voice Response - An automated voice system that allows callers to voice navigate ...
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:Interactive Voice Response - An automated voice system that allows callers to voice navigate.
    
;LFI
 
;LFI
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;MOS
 
;MOS
:Mean Opinion Score: Subjektive Audio-Quali-Einschätzung von signif. vielen Leuten, Ergebnis 1...5.
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:Mean Opinion Score: Subjektive Audio-Quali-Einschätzung von signif. vielen Leuten, Ergebnis im Bereich 1...5.
    
;MSD
 
;MSD
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;MWI
 
;MWI
:https://en.wikipedia.org/wiki/Message-waiting_indicator
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:[https://en.wikipedia.org/wiki/Message-waiting_indicator Message Waiting Indicator]
    
;NANP
 
;NANP
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;OPUS
 
;OPUS
:Audio-Codec: https://de.wikipedia.org/wiki/Opus_(Audioformat)
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:[https://de.wikipedia.org/wiki/Opus_(Audioformat) Der Rockstar unter den Audio-Codecs]. Der hat alle guten Features und ist dazu noch frei von Patenten. Den will man haben -- leider ist der aber (noch) nicht überall implementiert. Z.B. kann ein Snom-Tischtelefon kein Opus. Aber die Soft-Phones können Opus.
    
;OSP
 
;OSP
:https://en.wikipedia.org/wiki/Open_Settlement_Protocol
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:[https://en.wikipedia.org/wiki/Open_Settlement_Protocol Open Settlement Protocol]
    
;OSS
 
;OSS
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;PCMA
 
;PCMA
:Audio-Codec: https://en.wikipedia.org/wiki/A-law_algorithm
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:[https://en.wikipedia.org/wiki/A-law_algorithm Audio-Codec]
    
;PCMU
 
;PCMU
:Audio-Codec: https://en.wikipedia.org/wiki/Μ-law_algorithm
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:[https://en.wikipedia.org/wiki/Μ-law_algorithm Audio-Codec]
    
;PHN
 
;PHN
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;PRI ISDN
 
;PRI ISDN
:https://en.wikipedia.org/wiki/Primary_Rate_Interface (T1, E1, J1), 24 Channels (Primär-Multiplex)
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:[https://en.wikipedia.org/wiki/Primary_Rate_Interface Primär-Multiplex-Anschluß] (T1, E1, J1), 24 Channels
    
;RDOFF
 
;RDOFF
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;VAD
 
;VAD
 
:Voice Activity Detection - Reduces Bitrate when no Voice is detected
 
:Voice Activity Detection - Reduces Bitrate when no Voice is detected
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;VBR
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:Variable Bitrate Operation is an audio codec feature.
    
;VIP
 
;VIP

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