Today, I tried a call via Orange Card to 302-737 prefix from 410-272
I followed the normal procedure:
1-800-xxx-xxxx (the Orange Card switch number)
(get steady tone)
The digits from Orange Card, then 302-737-xxxx, then the PIN. Twice I
did this and got a busy signal which was of the same speed but of much
higher pitch than the normal busy signal I'd get from an ESS switch,
which is what I think 302-737 uses. Any clue as to what is going on?
(I then used this procedure to call another number on 302-737 and got
thru to the normal ringing signal.)
[Moderator's Note: Has it happened before or since, with the same
number or other numbers? I suspect the distant phone was busy is all.
Do you think something else might have been involved? PAT]