From: Bill Janssen
Subject: Re: and what is SLIC?
Date: Fri, 17 Jan 2003 08:47:07 -0800
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Lizard Blizzard wrote:
> Bob wrote:
> > SLIC = Super Loop Integrated Carrier, which is an older type of distribution
> > system used by Telco's. It is made up of 10 copper pairs and delivers 96
> > POTS lines. Modern type pair-gain systems are often fiber fed and deliver
> > 1000's of POTS lines, but are often called SLICs incorrectly..I like using
> > the term pair-gain systems. End-Users often hear about SLICs because they
> > do not work with ADSL, unless Remote Terminals with independent feeds are
> > placed with them. (They can work with some SDSL solutions)
> > -Robert
> All I know is that at two pairs per T1 line, and 24 POTS lines per T1,
> it should take six pairs of lines to handle all 96 POTS lines. What the
There were or are different ways of making pair gain systems. One of the
96 line units used voice encoding to put 96 channels on one T1 line. The
T1 line also used a different framing arrangement so that it was not compatible
with T1 multiplexing equipment.
> other four pairs are for is beyond me.
> What I see out in the field is a rack of stuff somewhat like the
> Lightspan 2000 pair gain beast that we have in our comm room, recently
> expanded to two racks. Each CBA, channel bank ass'y has 224 lines, with
> five CBAs for a total 1120 lines. That's all on a single pair of
> fibers, with a backup pair just in case. It has auto cutover if the
> fiber has a problem.
> If the SLIC is like this, then perhaps the extra pairs are for failsafe
> > "Paul Herber" wrote in message
> > news:firstname.lastname@example.org...
> >>Subscriber Line Interface Circuit
> ----------------(from OED Mini-Dictionary)-----------------
> PUNCTUATION - Apostrophe
> Incorrect uses: (i) the apostrophe must not be used with a plural
> where there is no possessive sense, as in ~tea's are served here~;
> (ii) there is no such word as ~her's, our's, their's, your's~.
> Confusions: it's = it is or it has (not 'belonging to it'); correct
> uses are ~it's here~ (= it is here); ~it's gone~ (= it has gone);
> but ~the dog wagged its tail~ (no apostrophe).
> ----------------(For the Apostrophe challenged)----------------
> From a fully deputized officer of the Apostrophe Police!