Canon fax basic 2000 서비스 매뉴얼

A–12

3.1

F-NET

F-NET is organized as shown in the Fig. A-8 for the following reasons:

(1) Terminals and the network are considered to be integrated, and termi-

nal functions are concentrated as far as possible on the network to

improve terminal economy.

(2) Many services can be achieved and line usage efficiency improved by

adopting a storage and conversion system.

(3) Adoption of digital transmission lines enables high-speed transmission

of large volumes of data.

(4) Reasonable communications costs can be achieved by sharing existing

subscriber telephone network facilities.

Fig. A-8 Configuration of F-NET

STOC

TS-FX

FCAP-LCE

FCAP-SIE

STOC

TS-FX

FCAP-LCE

FCAP-SIE

FAX

PSTN

TS-FX

TS-FX: Tandem trunk electronic exchange having facsimile communications functions

TS: Tandem trunk exchange

LS: Subscriber exchange

STOC: Storage and conversion equipment

FCAP: Facsimile signal conversion and control equipment

(LCE: line control equipment, SIE: Storage converter interface equipment)

F-NET

Digital network

Analog network

: Digital transmission line

: 4 kHz transmission line

: Flow of call (example)