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Joined: Jun 2012
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When people to put line a RJ21X will long distant to C.O. they must sent the Trunk don't go being --4 to 6.5 db at what Impedance that will change the 4-6.5 db. Do you know the answer? Stan o.paulsen@sbcglobal.net
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Joined: Jun 2001
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Moderator-Avaya
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Moderator-Avaya
Joined: Jun 2001
Posts: 10,949 |
Originally posted by sanpedro5292000:
Do you know the answer? Sorry dude, but I'm having a hard enough time reading the question...... 
Avaya SMB Authorized Business Partner. ACIS/APSS ESI Certified Reseller/Installer www.regal-comm.com
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Joined: Feb 2009
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Moderator-Vodavi, Vertical, XBlue
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Moderator-Vodavi, Vertical, XBlue
Joined: Feb 2009
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I've only seen 900 ohm used occasionally on trunk lines. Otherwise, 600 is the norm. As far as the Db loss goes, I'm afraid I've forgotten that stuff now that most COs have let subscriber trunks fall by the wayside.
- Dave S. -
You can never appease your ideologue opponents.
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Joined: Jul 2006
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Huh? Distance from the C.O. tends to determine the impedance. As far as loss...they strive for -3 to -6.5. It's not corrected until it goes lower than that and only very rarely. Most modern phone systems can compensate for long loop by removing the 3 dB pad. From a normal C.O. or RSU, the nominal impedance is 600 ohms.
Carl
This model is end of life
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Joined: Jan 2005
Posts: 15,401 Likes: 18
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
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Originally posted by sanpedro5292000: When people to put line a RJ21X will long distant to C.O. they must sent the Trunk don't go being --4 to 6.5 db at what Impedance that will change the 4-6.5 db.
Do you know the answer?
Stan
o.paulsen@sbcglobal.net Dave and Carl, how in the heck did you even understand enough of this (question?) to even respond? I still don't understand the OP's intent.
Ed Vaughn, MBSWWYPBX
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Joined: Feb 2005
Posts: 12,356 Likes: 4
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Dunno, we must be answering his questions because he keeps coming back. :shrug:
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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Joined: Nov 2005
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My answer of 600 ohms would be based solely on the thread title. When given a choice between 600 and 900 ohms in the US, I choose 600.
Like the last one, the body of the post is quite the tongue twister, especially when spoken out loud.
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Joined: Feb 2009
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Moderator-Vodavi, Vertical, XBlue
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Moderator-Vodavi, Vertical, XBlue
Joined: Feb 2009
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Ed, ESP? I just said what came to me and hoped for the best. I've now given it my best shot. :dance:
- Dave S. -
You can never appease your ideologue opponents.
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Joined: Jul 2006
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It also helps that I spent about 5 years in COEI doing special services by hand. Geeze, somewhere I still have my cable training notes.
I just stripped out the special services hardware from the warehouse...obsolete 401, 451, 457 and 443 Wescom and Tellabs equipment. I figured that they had very little value :-)
It broke my heart tossing out the firebar.
This model is end of life
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