Transport Formats

uConversational Speech (12 Kbps)
–12.2 Kbps max.
–TTI: 20 msec
–Transport Formats (TF) available:
TF RAB1 RAB2 RAB3
TF0v 0 x 81 0 x 103 0 x 60 (e.g., silence)
TF1v 1 x 81 1 x 103 1 x 60 (e.g, active voice)
two other formats too (see Stds. Doc.)
–TFC: (TF0, TF0, TF0) e.g., during silence
(TF1, TF1, TF1) e.g., during active voice periods

uInteractive/Background Data (64 Kbps)
– 64 Kbps max.
–TTI: 20 msec
–Transport Block (TB) size = 336 bits
–Transport Formats (TF) available:
»TF0 - 0 x 336
»TF1 - 1 x 336
»TF2 - 2 x 336
»TF3 - 3 x 336
»TF4 - 4 x 336

uConversational speech (12 Kbps) + Interactive/Background Data (64 Kbps)
Voice TrCH Data TrCH
TFC1: (TF0v, TF0v, TF0v) TF0d
TFC2: (TF0v, TF0v, TF0v) TF1d
TFC3: (TF0v, TF0v, TF0v) TF2d
TFC4: (TF0v, TF0v, TF0v) TF3d
TFC5: (TF0v, TF0v, TF0v) TF4d
TFC6: (TF1v, TF1v, TF1v) TF0d
TFC7: (TF1v, TF1v, TF1v) TF1d
TFC8: (TF1v, TF1v, TF1v) TF2d
TFC9: (TF1v, TF1v, TF1v) TF3d
TFC10: (TF1v, TF1v, TF1v) TF4d


TTI depends on the transport channel; {2,10, 20, 40, 80 ms})