Rapid advanced in computer and communication technologies have resulted into the increasing merging of these two fields.
The lines have blurred among computing, switching and digital transmission equipment and the same digital technique are being used for data, voice and image transmission.
Integrated Services Digital Network (ISDN) is intended to be worldwide telecommunications networks to replace existing public telecommunications networks.
Now, let’s see, what is ISDN?
Services that ISDN supports
The all services that ISDN supports are;
ISDN is not restricted to Public Switched Telephone Network (PSTN) alone, it may be transmitted via packet switch network.
Types of ISDN network
There are two types of ISDN which are;
BroadBand ISDN is a BroadBand counterpart to integrate services digital networks which provides digital transmission over ordinal telephone company copper wires on the narrow band.
The main purpose of using BroadBand ISDN is to provide transmission over ordinary telephone company copper wires on the narrow band and having speed of maximum 2MBits/Sec to 1GigaBits/Sec. Also related with Asynchronous Transfer Mode (ATM).
Advantages of ISDN
So the advantage of using Integrated Services Digital Network (ISDN) are;
Disadvantages of ISDN