ISDN
acronym as in strong fondness
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Example Sentences
Example:The company began to phase out PSTN and shift to ISDN for its digital communication needs.
Definition:Public Switched Telephone Network, a network of telephone calls and data communications between various telephone subscribers.
From PSTN
Example:The new business phone network included ISDN as one of the preferred communication channels.
Definition:A network of telephone connections designed for organizational use, often supporting various types of communication services.
From business phone network
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