Define ISDN? Different service of ISDN( BCA 5 semester)

 Integrated service digital network:-

It is digital network service which design to run in a telephone network. It is signal under transfer different information. That is maximum receiver. It is set of communication protocols. It is allowed to carry a group of digital services. That is convert data text, voice music and graphics pictures. To help of physical data and network layer. ISDN is a wide area network. Transmission Media through different communication technology.

ISDN service:-  It provide a digital network which use to transfer different information. The telephone network with the help of twissted pair. ISDN service is a sender to receiver work form.

a). Fax machine

b). Data application

c). Voice application

d). Video service

e). Telefax service

Advantage of ISDN:- 

1). It can carry text, voice and video.

2). It is connection oriented service.

3). It is more flexible for data transmission.

Features of ISDN:- 

. Fax

. E mail

. Telephone conferencing

. Telegram

. High digital network

. Regular telephone line

Types of ISDN:-

A). Narrow band ISDN

B). Broadband ISDN