Even with the robbed bit thing you get 62666.7 bits/s, since it only steals the LSB every 6 samples. :-)

Regards,
Steve

Marcelo Pacheco wrote:

A T1 is 24 64000bps channels.
The 56000bps thing is when robbed bit signalling is used, it steals bits from each voice channel for call signalling, while on the E1 one channel is used for that. When PRI signalling is used each voice channel is the full 64000 bps thing.


Marcelo Pacheco

Em Qui 16 Set 2004 13:17, Andrew Thompson escreveu:


Christopher Jacob wrote:


All,

This may be a stupid question, but here it is...

What interface gives the most density? Do I top out at T1's? For
instance, 4 t1's to the Digium Quad span t1 card. Is there an interface
available for T3 or DS3?


Depending on where you using the circuits, you might try an E1. It uses
the same total bandwidth as a T1(I think), but splits the channels at
56K instead of 64K, yielding more channels. (And now I can't remember
the number.)

I haven't heard of direct DS3 connectivity...

Just stretching my imagination a little bit, you might be able to plug a
DS3 into a H323 box, and then feed the IP-side of the calls to
asterisk....


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