T1 Circuit actual throughput 1290Kbps
Robert E. Seastrom
rs at bifrost.seastrom.com
Thu Jul 9 14:18:51 UTC 1998
From: Dorian Kim <dorian at blackrose.org>
> A T1 is capable of achieving 1536 kbps maximum (24 x 64 kbps).
While this doesn't seem to apply to Tony's case, I wouldn't make a blanket
statements like that. If the T1 is provisioned ESF, yes you can get
1536 kbps, but there are places where you still can only get SF/D4 framing.
Precisely. The most likely explanation is that the T1 is actually D4
framed, which gives it a throughput of (24 * 56kbps) == 1344k. Or the
T1 may be properly provisioned but the CSU/DSUs incorrectly configured
for the old-fashioned framing (I think I saw this working at one
point, can't remember for sure). The PPP is hardly eating anything at
all in the grand scheme of things.
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