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The idea of
Integrated Services Digital Network ISDN is a network to
transfer the Sound signals and Non-sounds (Data and
Information), and it uses an International communication
system for all types of moving and accessing to network
by all connected devices (Fax Telephone, Internet
Most important
Features of ISDN:
1) Uses special modems to
transfer data.
2) High speed to transfer
information.
3) Changes the customers lines to
digital lines.
4) Low cost and economically.
5) Many services in one line.
6) Separate between the signal
channel and data channel. |
