| 1 |
Voice over ATM (VTOA - Voice and Telephone over ATM)
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| 2 |
QoS parameters: delay, jitter in delay, loss rate
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| 3 |
CBR for voice current ATM Forum specification
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| 4 |
silence detection (voice has 60% of silence)
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| 5 |
unstructured circuit emulation: maps entire T1 circuit to a single ATM VC
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| 6 |
structured circuit emulation: maps individual 64 Kbps circuits to ATM VCs
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| 7 |
Compression: G.726 ADPCM, G.728 LD-CELP, G.729 CS-ACELP
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| 8 |
average national network delay for voice traffic specified by G.114, G.131, G.126
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| 9 |
current VTOA: lack of compression, lack of silence suppression, limitations of AAL1
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