Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2006-08-15
2006-08-15
Ngo, Ricky Q. (Department: 2616)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S401000, C370S395520, C370S410000, C370S525000
Reexamination Certificate
active
07092383
ABSTRACT:
A method for switching on a subscriber signal wherein a transmission path from a calling terminal device of a switched-through telecommunications network to a called terminal device of a packet transmission network is defined using a network transmission function. An alert message comes from the called terminal device end. When the alert message occurs, a following signaling message is generated which indicates that a subscriber signal has not yet been generated for the calling terminal device. The ringing tone is not switched on, and a standard signaling message is not generated, until the following signaling message has been processed.
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PSTN definition from PC Magazine webpage: http://www.pcmag.com/encyclopedia—term/0,2542,t=central+office&i=39518,00.asp.
XP-000870631—An Architecture for Residential Internet Telephony Service, Huitema et al., pp. 50-56.
Gaiser Franz
Hoffmann Klaus
Bell Boyd & Lloyd LLC
Ngo Ricky Q.
Wong Warner
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