Yeah... sorta.
So the CSU settings may be used when the E1 is pulled down to my premises, and I
have a short cable connecting directly to the CSU device. I don't know why I'd
need to change the LBO settings in that case, but I guess that doesn't really
matter to me at the moment.
In my case, I am approximately 40-50 metres (130-165 feet) from the switch
(according to the telco's engineers), so an LBO of "1" in my span definition
would theoretially be correct.
asterisk wrote:
http://www.adc.com/Library/Techpub/80348_1.pdf?refer=Library&C=Copper_Connectivity&L=DS1_E1_Twisted_Pair_Products
http://www.pcmag.com/encyclopedia_term/0,2542,t=DSUCSU&i=42059,00.asp
any help?
Maybe I need to be a little more specific.
I know what signal attenuation is. What I don't know, is how LBO (and
specifically the implementation of it as used in the zaptel
hardware/software)
helps the situation.
My servers are co-located with my carrier, and my PRI circuits are run
through
several patch panels, jumpers, etc. to another room, where they terminate
on a
DMS-100. I have asked the carrier for an estimated cable length, so i can
correctly set the LBO.
In the zaptel config, what is meant by DSX-1? What is CSU?
Why would I use a -7.5db, -15db or -22.5db LBO?
asterisk wrote:
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci211613,00.html
----- Original Message -----
From: "Rod Bacon" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, October 09, 2005 6:42 PM
Subject: [Asterisk-Users] Zaptel Line Build Out
Can someone who is knowledgable in the traditional telco space please
give
me a
layman's explanation (or point me to an appropriate url) of LBO as per
the
zaptel configuration file?
# The line build-out (or LBO) is an integer, from the following table:
# 0: 0 db (CSU) / 0-133 feet (DSX-1)
# 1: 133-266 feet (DSX-1)
# 2: 266-399 feet (DSX-1)
# 3: 399-533 feet (DSX-1)
# 4: 533-655 feet (DSX-1)
# 5: -7.5db (CSU)
# 6: -15db (CSU)
# 7: -22.5db (CSU)
--
==========================================
Rod Bacon
Empowered Communications
Ground Floor, 102 York St. South Melbourne
Victoria, Australia. 3205
Phone: +613 99401600 Fax: +613 99401650
FWD: 512237 ICQ: 5662270
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