Signaling system and method for enabling PBX-PBX feature transpa

Details Signaling system and method for enabling PBX-PBX feature transpa Signaling system and method for enabling PBX-PBX feature transpa

1996-03-14

1998-10-06

Hong, Harry S.

Telephonic communications

Plural exchange network or interconnection

Multi-pbx interconnection

370385, 370467, 370522, 379207, 379230, H04M 700, H04M 342, H04J 312, H04Q 1100

Patent

active

058189211

ABSTRACT:
A method and system for supporting private branch exchange features over a public switched network is provided. The proprietary private branch exchange call and feature control information is separated into standard ISDN public network protocol elements and proprietary ISDN protocol elements. The interface between the originating private branch exchange and the public switched network inserts the proprietary protocol elements into a UUS service data packet for transparently transmission to the destination private branch exchange. Thus, the proprietary private branch exchange feature control information can be recovered and utilized by the destination private branch exchange, thus permitting PBX-PBX feature transparency through a switched public ISDN network.

REFERENCES:
patent: 4488004 (1984-12-01), Bogart et al.
patent: 5182750 (1993-01-01), Bales et al.
patent: 5521970 (1996-05-01), Herrick et al.
patent: 5550906 (1996-08-01), Chau et al.

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