VoFR
All the operations discussed thus far in this chapter are supporting procedures to VoFR, although some of them can be used for other types of traffic. For speech, VoFR defines several specifications on the coding of the voice traffic. The reader can refer to the Annexes in FRF.11 for more detail. For your convenience, the technologies that are supported are listed in Table 12-1. I have added an entry in the table to include another specification (ITU-T G.723 and Annexes) that will surely be used, but is not part of FRF.11 at this time. All organizations that belong to the International Media Teleconferencing Consortium (IMTC) have all selected G.723.1 for their basic coder.
Figure 12-5. Subchannel (SC) concept
Servicing the Dialed Digits ...
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