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What does ISDN+CALLING+NUMBER+IDENTIFICATION+SERVICE Stand For?
For ISDN CALLING NUMBER IDENTIFICATION SERVICE we have found 0 definitions.
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What does ISDN+CALLING+NUMBER+IDENTIFICATION+SERVICE mean? We know 0 definitions for ISDN+CALLING+NUMBER+IDENTIFICATION+SERVICE abbreviation. Possible ISDN+CALLING+NUMBER+IDENTIFICATION+SERVICE meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Please look for them carefully.