Funny Coincidence

Chip Fetrow tacos at
Sun Nov 11 21:31:47 CST 2012

In general, in old school telephone engineering a T-1 would spin out  
to 23 or 24 POTS lines, or 23 or 24 ISDN channels (or 12 2BSD).  Of  
course, today, with compression it can be pretty much as many as you  
want as long as you are willing to put up with the bad audio quality.

Broadcast Audio Loops were also equally dedicated over several T-1  
Channels.  An 8 k Hz loop would occupy three channels, as an example.

I never got the guys name.  He didn't offer, and I didn't ask.  I  
should have, as it turns out that today the problem is STILL not fixed.

I could not care less that the equipment is damaged.  I care that I  
don't know what is going on inside the electrical box and if there is  
a fault, there could be 240 Volts AC on the cabinet.

I should have asked for his card.


Begin forwarded message:

> From: Iain McFadyen <ki4hlv at>
> Date: November 11, 2012 5:23:23 AM EST
> To: tacos at
> Subject: Re: Tacos Digest, Vol 117, Issue 16
> Hi Chip,
> [...]
> My first encounter (in 1988) with this technology was dominated by a  
> Bell Labs "SLC-96" unit, the first version of which filled two and a  
> half racks to deliver 96 POTS lines from 2 or 3 T1s. The T1s were  
> delivered over copper to the SLC, and the drops to the residential  
> subscribers were fed from the SLC on copper.
> [...]
> Did you get a contact number for the Verizon employee you met? He  
> would be a great point of contact. If we (the Amateur Radio  
> community) scrutinize what we report to him, (i.e. don't inundate  
> him with trivial stuff, and only report serious stuff to him) he  
> might be very grateful and helpful!
> Best....
> Iain   KI4HL
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the Tacos mailing list