Standard Line Build Outs for T-1s on the T-3 Mux's were:

1-133'
133-266'
266-399'
399-533'
533-655'

After 655' you needed repeaters. There were CO repeaters (130 Volt) that would push a T-1 for "A Country Mile" (about 6,000'). There were also "Short Haul" Repeaters designed for inside buildings that ran on 48V. Depending where you put them in the run (the middle or one of the ends) you could get 2,000-4,000' on a run.


Sam


"Where are we going and why are we in this hand basket?"