Telephone system

Details Telephone system Telephone system

2011-08-16

2011-08-16

Addy, Thjuan K (Department: 2614)

Telephonic communications

Plural exchange network or interconnection

With interexchange network routing

C379S219000, C370S352000

Reexamination Certificate

active

08000463

ABSTRACT:
A telephone system comprising a first phone terminal belonging to private communication network, a second phone terminal belonging to public communication network, a transit device connects the private communication network to the public communication network, and a call control device controls a call between the first phone terminal and the second phone terminal, wherein the private communication network includes, a certification processing unit performs certification processing to certificate whether or not the first phone terminal should be connected to the public communication network, and a notification processing unit notifies the result of the certification processing to the call control device when a call connection request to form a communication link between the first phone terminal and the second phone terminal occurs, and the call control device forms the communication link in response to the call connection request if the notified result of the certification processing shows a success.

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Notification of Reasons for Rejection for Application No. 2006-039887, Japanese Patent Office, mailed Jul. 8, 2008.
VoIP Gateway having a PBX Function, Making it Possible to Construct a Private Line Network by an IP Telephone Set, Nikkei Business Publications, Mar. 20, 2000, p. 180.

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