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3. Functional description
3.1 General architecture
PABXs are considered to offer four types of functions:
connection functions, which involve adapting the signals circulating between the entities making up private telephone installations to the constraints of the transmission lines linking them together (see § 1.2 );
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The Ultimate Scientific and Technical Reference
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Functional description
Manufacturers. Suppliers (non-exhaustive list)
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Manufacturers and suppliers on the French market
Alcatel - Business System Division
Matra Nortel Communication.
Tenovis S.A.
Ericsson.
Lucent Technologies.
Siemens.
Discofone.
...
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The Ultimate Scientific and Technical Reference