N-GEN Communications Web-based Seminars ©NGCS

Seminar - An Overview of Communications Technologies


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Module 5 - SONET, WDM, DWDM and B-ISDN Technologies                                                             Slide 50 of 76 _________________                                                                                  __________

                                                           B-ISDN Channels

Channel Name Type Bit Rate Applications
A Voice Frequency 3.2 M Hz Analog Voice/Voice band data (modem)/facsimile
B Digital 64 K bps PCM voice/wideband speech (7 K Hz)/data
D Digital 16 or 64 K bps Signaling channel/packet type data/telemetry
E Digital 64 K bps Signaling for high-capacity user equipment (PABX)
H0 Digital Broadband 384 K bps High -quality audio/high-speed digital info.
H11 Digital Broadband 1.536 M bps Video for teleconferencing/high-speed digital info.
H4 Digital Broadband 150 M bps High-definition TV

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CCITT recommended B-ISDN channels.