Answer:
3. ISDN
Explanation:
ISDN ( Integrated Services Digital Network ) -
It is the used for the simultaneous digital transmission of network service , data , video and voice , instead of the old circuits of the public switched telephone network ( PSTN ) , is referred to as ISDN .
The characteristic feature of ISDN is that it integrates the data and speech on the same lines , which is not possible in PSTN .
Hence, from the given information of the question,
The correct option is ISDN .
Answer:
You should consider the number of cells needed for data, labels, titles, and formulas.
Explanation:
If you’re looking for an exact answer, we weren’t given any options, but in my personal experience just explain that you appreciated them taking their time out of their day and say that you’re no longer interested in their offer.