Combined narrow band and broad band telephone communication syst

Details Combined narrow band and broad band telephone communication syst Combined narrow band and broad band telephone communication syst

1984-06-14

1987-03-31

George, Keith E.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

358 85, H04M 1100, H04N 714

Patent

active

046548661

ABSTRACT:
An integrated communication system (e.g., BIGFON) includes the narrow-band telephone network and a superposed video-telephone network. The path search for setting up calls in the telephone network is carried out with the aid of the telephone call numbers. To permit a video-telephone network structure independent of the structure of the telephone network, each subscriber of the video-telephone network must be assigned a separate video-telephone call number for the path search in the broadband network. In order that a subscriber does not have to dial two different numbers to set up a video-telephone call, each exchange (V1, V2) of the communication system includes a mapping circuit (ZS) which establishes for each video-telephone subscriber (TEA, TEB) a correspondence between his or her telephone call number and a video-telephone call number serving to set up calls in the video-telephone network. This video-telephone call number can be called up from the mapping circuit (ZS) via the telephone network (FN).

REFERENCES:
patent: 3573377 (1971-04-01), Anderson et al.
patent: 3662110 (1972-05-01), Van Fossen et al.
patent: 3701849 (1972-10-01), Stapleton
patent: 3922491 (1975-11-01), Bjork et al.

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