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If two ISDN channels are used together, each connecting the same pair of users, how many calls are being made?
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Answer / silpa
Two. Even though the calling party and the called party are the same, there are two channels being used and two calls are being made.
This is important to remember for two reasons:
1) The setup for each call needs to be correct, and not having the details exactly right for the second channel can often be a reason for the failure of multi-channel calls
2) The advantage of the speed of a 128K link always need to be weighed against the cost of having TWO simultaneous calls being charged for.
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