H.100 and H.110 are legacy telephony equipment standard published by the
ECTF
ECTF (the Enterprise Computer Telephony Forum) was formed in
1995 by telephony equipment and software suppliers to
improve the interoperability of various vendors’ CT solutions.
Until ECTF was formed, the computer telephony industry was an
alphab ...
that allow the transport of up to 4096 simplex channels of voice or data on one connector or ribbon cable. H.100 is implemented using Multi-Channeled Buffered Serial Ports (McBSP), typically included as a
DSP peripheral. McBSP, also known as TDM Serial ports are special serial ports that support multiple channels by using
Time-division multiplexing
Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fracti ...
(TDM).
[Faranak Nekoogar, 'From ASIC to SOC: a practical approach', Prentice Hall, 2003]
The McBSP / TDM Serial Port Interface is as follow:
* CK: Clock
* FS: Frame Sync
* DR: Data Receive
* DX: Data Transmit
See also
*
Time-division multiple access
Time-division multiple access (TDMA) is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots. The users transmit in rapid succession, o ...
*
TDM Bus A TDM bus is one application of the principle of Time-Division Multiplexing.
In a TDM Bus, data or information arriving from an input line is put onto specific timeslots on a high-speed bus, where a recipient would listen to the bus and pick out on ...
External links
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References
{{DEFAULTSORT:H.100 (Computer Telephony)
Telephony