From: Scott Morris (swm@emanon.com)
Date: Thu Jul 03 2008 - 13:53:04 ART
The technical throughput for data is 1.536M (24 channels * 64000 bps each =
1536000 bps). In an ESF format (common framing these days) there is an
additional 8k in framing bits (1 bit every 192 bit superframe). So 193 bits
* 8000 cycles per second = 1544000 bits per second.
That 193rd bit is basically unusable for data which begs the question why
Cisco routers default to that bandwidth. So it all boils down to your level
of technical accuracy or anal-retentive attention to detail.
;)
HTH,
Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
Senior CCIE Instructor
smorris@internetworkexpert.com
Internetwork Expert, Inc.
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Power corrupts.
Study hard and be Eeeeviiiil......
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of John
Sent: Thursday, July 03, 2008 11:55 AM
To: ccielab@groupstudy.com
Subject: T1 speed
The speed that I've always known is 1544 kbs. Now in almost all of the IE
labs it's 1536 kbs. I've searched (probably in the wrong places) and all I
get is 1544. Where in the heck are they coming up with 1536.... EU-T1?
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