John,
There's nothing wrong with your understanding of channelized vs.
unchannelized. I believe your provider's tech dosen't understand or is
completely mis-informed.
Nigel
- Original Message -
From: "John Neiberger"
To:
Sent: Monday, July 01, 2002 12:10 PM
Subject: Confusion
I think a channelized T1 sends 193 bit frames as well. 8 for each channel
plus 1 for timing = 193.
All T1's are channelized, otherwise it would have to be some sort of
byte-synch communication, which isn't plausible.
I think the tech you spoke to is incorrect as well.
""John Neiberger"" wrot
I think the main thing to note about cT1s is bit robbed signalling i.e
channel asscociated signalling normally used to transport voice. Therefore,
we've got 7 bits of payload, 1 bit for signalling for every timeslot and 1
bit for framing. Bit robbed signalling would effectively yield a 56 kbps
pip
I think even a "pure data" T1 is channelized. Even the PRI is as well.
--
RFC 1149 Compliant.
""Wesley"" wrote in message
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> I think the main thing to note about cT1s is bit robbed signalling i.e
> channel asscociated signalling normally used to t
Hi John
Thought I would just add a few words from 'T1 A survival guide' from
O'Reilly.
T1 = DS1 delivered over a 4 wire copper interface
DS1 = Digital Stream level 1 - 24 DS0's combined into a DS1 which supplies
1536 kbps connectivity plus 8 kbps framing and signalling overhead for a
total of 15
Hey Matt,
That's exactly where I got my info from. BTW, that's a really good book to
learn about T1, unchannelized or otherwise. And it goes into HDLC, PPP and
Frame Relay as well. The reindeer on the front cover rocks! hehe
Wes
""Matthew Crane"" wrote in message
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