The development of pulse code modulation systems and electronic
exchanges, together with the increase in volume of data traffic, have
made it desirable to establish a means for handling both voice and
data trarfic in the telephone network. A technique is required whereby
integrated voice and data switching may be accomplished in an electronic
exchange.
It is proposed that a data adaptor unit be incorporated in
electronic exchanges for the ourpose of concentrating data traffic onto
PCM highways. A conceptual design for the architecture of such a unit
is presented and its performance evaluated. The protocols for
connecting data adaptors into a network, and the use of flow control
procedures for regulating data traffic within the network, are described.
The hardware implementation of the unit is not considered.
The proposed data adaptor operates on the packet switching
principle. It is comprised of three types of modules each dedicated
to carrying out a particular communication function. The modules are
the interface processor that interacts with data transmitting devices,
the network processor for sending data over PCM channels between
adaptors, and the supervisory processor for regulating activities within
the adaptor unit.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/19196 |
| Date | January 2015 |
| Creators | Reinink, Kasper |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | application/pdf, application/pdf |
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