Private automatic branch exchange (PABX) system with transparent

Details Private automatic branch exchange (PABX) system with transparent Private automatic branch exchange (PABX) system with transparent

1997-05-14

1998-09-08

Hong, Harry S.

Telephonic communications

Plural exchange network or interconnection

Multi-pbx interconnection

379207, 379229, 379269, 379279, H04M 700, H04M 342, H04M 300

Patent

active

058056920

ABSTRACT:
A telecommunications system includes a network of coupled telecommunication exchanges (PABX1, PABX2, PABX3). At least one of the exchanges is coupled to a processor (COMP) via a so-called Computer Telephony Interface (CTI). The exchanges monitor state information for extensions (TLPH1, TLPH2, TLPH3) that are connected to the exchanges. A router routes the state information to the exchange which is coupled to the processor. That exchange transfers the state information to the processor.

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"ECMA Standardizing Information and Communication Systems", Protocol for Computer Supported Telecommunications (CSTA) Phase I, Standard ECMA-180, Jun. 1992.
"ECMA Standardizing Information and Communication Systems", Services for Computer Supported Telecommunications Applications (CSTA) Phase I, Standard ECMA-179, Jun. 1992.
Gleinig et al., "CSTA-Computer Supported Telecommunications Applications", Nachrichtentechnik Elektronik, vol. 42, 1992, No. 3, pp. 96-98.
Maat, "Call Processing in a Fully Integrated Network of SOPHO-S2500 PABXs", Philips TDS Review, vol. 44, No. 3, Dec. 1986, pp. 32-45.

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