[BC] long distance service for ISDN

[Fred Gleason]

On Wednesday 18 May 2005 14:25, Mike McCarthy wrote:
> If you have MCI now, force them to add your ISDN BRI SPIDS to your standard
> LD account.  They CAN DO IT.  You may simply want to give them the SPID#
> and NOT tell them the numbers are ISDN BRI's.  To them, a DS0 is a DS0.

Hmm, not quite.  The usage patterns tend to be radically different.  
Traditional 'voice' traffic calls last on the average about five minutes, and 
until the advent of widespread Internet access, the entire PSTN was 
engineered on that basis.  Data, OTOH, tends to have *much* longer call 
durations -- hours, sometimes days, sometimes 'forever'.  This blows the 
traditional 'five minute rule' used in traffic engineering out the window and 
means that the telcos end up having to provision significantly greater 
'inter-office' routes than a pure voice-traffic setup would require.  Hence, 
higher prices for data traffic.

Cheers!


|-------------------------------------------------------------------------|
| Frederick F. Gleason, Jr. | Director of Broadcast Software Development  |
|                           |             Salem Radio Labs                |
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|          All science is either physics or stamp collecting.             |
|                                      -- Ernest Rutherford               |
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