[mrtg] Re: conversions for MaxBytes

[Rippe, Mark (CCI-Warwick)]

the missing 8k are framing bits.

the t1 proto goes;
1 framing bit	1 framing bit			1 bit		1 bit
8 bits times 24 channels		192 bits		193 bits
1 framing bit			1 bit		1 bit	194 bits
8 bits times 24 channels		192 bits		386 bits
1 framing bit			1 bit		1 bit	387 bits
8 bits times 24 channels		192 bits		579 bits
1 framing bit			1 bit		1 bit	580 bits
8 bits times 24 channels		192 bits		772 bits
1 framing bit			1 bit		1 bit	773.bits
8 bits times 24 channels		192 bits		965 bits
1 framing bit			1 bit		1 bit	966 bits
8 bits times 24 channels		192 bits		1158 bits
1 framing bit			1 bit		1 bit	1159 bits
8 bits times 24 channels		192 bits		1351 bits
1 framing bit			1 bit		1 bit	1352 bits
8 bits times 24 channels		192 bits		1544 bits
		

mark.rippe at cox.com

"Elegance is for Tailors!"
Albert Einstein on mathematics


> -----Original Message-----
> From:	Alex van den Bogaerdt [SMTP:alex at slot.hollandcasino.nl]
> Sent:	Monday, February 14, 2000 10:11 AM
> To:	CCongdon at WorkNET.net
> Cc:	mrtg at list.ee.ethz.ch
> Subject:	[mrtg] Re: conversions for MaxBytes
> 
> Congdon, Christopher wrote:
> > 
> > Acutally, I'd like to know where 1.544 comes from. From what I
> understand, a
> > T1 is composed of 24 64Kb channels. That makes 1.536.  I would like to
> know
> > where the extra 8K comes from!
> 
> I think it is the other way around...  If you provide 24 channels, you
> need a signalling protocol.  Just an assumption: this takes 8k ?
> 
> If I use an E1 interface to provide 64k ISDN channels I get a total
> of 30 B channels and 1 D channel, 64k each.  In this case, 64k gets lost.
> 
> regards,
> -- 
>    __________________________________________________________________
>  / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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