Recent studies reveal that the "all circuits busy" audio message received by
many users is not caused by all Missouri State University off-campus modems being busy.
Only users in specific exchanges are usually affected. If you are affected,
please provide feedback below!
November 10, 1998
Please refer to news item Modem Trunks Fixed for
the resolution to this problem. Do not attempt to fill out a problem
report any longer, the problem has been solved and the form has been
disabled. It is left on the web for historical reasons only.
November 4, 1998
First we'd like to thank all of our users who provided valuable feedback information as
to modem busy issues. We do not need further feedback at this time. We have a
large-scale testing arrangement set up for tomorrow night with Southwestern Bell regarding
our trunking issues. This extensive test should hopefully uncover the issues which
are causing our trunk utilization problems. At this point, we feel that SWBT
probably has the capacity to handle our traffic between local offices, but we do not feel
that they have correctly setup the trunk rotary options.
We have nine trunks (PRIs) coming into Missouri State University for a total of 207 modems active. We
have never seen more than about 184 modems actually in use which happens to be one trunk's
worth shy of the total. Starting on 10/28/98, the problem got worse and now we are
only able to get about 161 modems active which happens to be two trunk's worth shy of the
total. Be sure to check back here over the next few days for current developments.
October 7, 1998
Current modem
utilization statistics indicate that the off
campus modem pool is not full (the on-campus pool does fill occasionally). Many
users are starting to report receiving an audible message stating that "all circuits
are busy". If the Missouri State University modem pool fills up, users should receive an actual busy
signal. The "all circuits are busy" message is probably being generated by
the phone company because trunks between the 875 exchange and the user's exchange are
full. Other carriers may give a busy if their trunks are full, but Southwestern Bell
Telephone should normally generate a voice message.
Southwestern Bell has been contacted and is investigating the problem, but requests
more information from our users who are receiving this message. If you ever get the
message, please try to write down or record the entire message,
especially the last part and report it to us using the form below.
This author has never heard the message, but it should say something similar to:
We're sorry, all circuits are busy. Please hang up and try
your call again later. 417 McDanial.
I use AOL or other 875 numbers at the same time and I had problems.
The complete message I get is: (If you can't hear the message,
dial 875-6996 using a standard telephone - if you get a real busy signal, please say so.)
If you need more information, my E-mail address is .
