Explain Isdn.

1.	Explain Isdn.
Answer» ISDN is a DIGITAL telephony and data-transport service OFFERED by TELEPHONE carriers. ISDN is a digital telephony and data-transport service offered by telephone carriers.

Answer»

ISDN is a DIGITAL telephony and data-transport service OFFERED by TELEPHONE carriers.

ISDN is a digital telephony and data-transport service offered by telephone carriers.

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