Splitter device for MDU/MTU environments

Details Splitter device for MDU/MTU environments Splitter device for MDU/MTU environments

2001-08-31

2004-08-24

Kuntz, Curtis (Department: 2643)

Telephonic communications

Subscriber line or transmission line interface

C379S326000, C379S327000, C379S330000, C379S333000, C379S334000, C379S413020

Reexamination Certificate

active

06782097

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to telecommunications equipment. More particularly, the present invention relates to telecommunications equipment used in twisted pair telephone carrier systems.
BACKGROUND OF THE INVENTION
Telecommunications systems for transmitting voice and data to and from subscribers (i.e., residences and businesses) are known. An exemplary telecommunications system
10
is schematically shown in FIG.
1
. The system
10
includes a Main Distribution Frame
12
(MDF) for connecting digital subscriber lines
13
(DSLs) to internal lines
14
within a telephone server's central office
15
. The central office
15
frequently includes a DSLAM
18
(Digital Subscriber Line Access Multiplexer) and a voice switch
19
. The DSLAM
18
transmits data to and receives data from a communications network/backbone
21
. The voice switch
19
transmits voice signals to and receives voice signals from a communications network/backbone
23
. The networks
21
and
23
can be dedicated lines that are part of the same network. POTS splitter devices
16
(i.e., Plain Old Telephone Service splitter devices) are used at the central office
15
to combine data signals from the DSLAM
18
with voice signals from the voice switch
19
. By combining the signals, the signals can be simultaneously routed to a subscriber
25
through a single DSL
13
. Signals transmitted from subscribers
25
to the central office
15
are also routed through the POTS splitter devices
16
. At the POTS splitter devices
16
, the signals are split and directed to the DSLAM
18
and the voice switch
19
. Typically, the splitter devices
16
include low pass filters for removing the data content from any signals transmitted from the splitter devices
16
to the voice switch
19
. Since DSLAMs
18
frequently include high pass filters for removing the voice band, the splitter devices
16
usually do not include filters for filtering the voice content from the signals transmitted to the DSLAM
18
.
POTS splitter devices are also used at locations outside the central office environment. For example, splitter devices are often installed at multi-dwelling units (MDUS) such as apartments or condominiums. Splitter devices are also often installed at businesses or at multi-tenant units (MTUs) such as office buildings.
FIG. 2
schematically illustrates an exemplary MDU/MTU
40
. The MDU/MTU
40
has an equipment room
42
in which a DSLAM
18
′, a voice switch
19
′ and POTS splitter unit
16
′ are installed. The DSLAM
18
′ and the voice switch
19
′ respectively provide a data and voice interface with a central office
15
′. The DSLAM
18
′ and the voice switch
19
′ also interface with the splitter unit
16
′. From the splitter unit
16
′, separate DSLs are provided to different subscriber locations (e.g., different floors, offices, apartments, etc.) within the MDU/MTU
40
.
SUMMARY OF THE INVENTION
One embodiment of the present invention relates to a front access splitter assembly that fully supports lifeline POTS and lifeline ISDN (Integrated Services Digital Network) service requirements.
A variety of other aspects of the invention are set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practicing the invention. The aspects of the invention relate to individual features as well as combinations of features. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.


REFERENCES:
patent: 4975072 (1990-12-01), Afshar
patent: 5889850 (1999-03-01), Sochacki
patent: 5999621 (1999-12-01), Martin et al.
patent: 6069797 (2000-05-01), Widmayer et al.
patent: 6333981 (2001-12-01), Weir et al.
patent: 6438226 (2002-08-01), Guenther et al.
Application Ser. No. 09/549,133, filed Apr. 13, 2000.
“BroadWire™ 120: High Density ADSL Splitter”,ADC Telecommunications, Inc., 8 pages (Sep. 2000).
“BroadWire™ 240: High Density ADSL Splitter”,ADC Telecommunications, Inc., 8 pages (Sep. 2000).
“BroadWire™ 528: High Density ADSL Splitter”,ADC Telecommunications, Inc., 8 pages (Sep. 2000).
“DSL POTS Splitter Shelf Family”,Corning Cable Systems LLC, 8 pages (Sep. 2000).
“High Density xDSL Central Office Splitter: PS-1000 Series”,Wilcom, 2 pages (Apr. 2000).
“Product Information for Multiple Dwelling Unit, ISDN”,ADC Telecommunications, Inc., 4 pages (Sep. 8, 2000).
“Product Information”,mPhase Technologies, 3 pages (no date).
“Product Release: Wilcom Announces Highest Density CO ADSL POTS Splitter Series”,Wilcom, 2 pages (Nov. 6, 2000).
“PS-1103 ADSL Central Office Line Filter Shelf: Quick Step Installation Instructions for PS-1103 Shelf”,Wilcom, 2 pages (Jun. 2000).
“PS-1103 CO POTS Splitter: High Density xDSL Central Office Splitter”,Wilcom, 2 pages (Jul. 2000, Nov. 2000).
ADC Telecommunications, Inc., “BroadWire™ 24-Port Front Access MDU ADSL Splitter Chassis Installation Guide”, pp. 1-14 (Oct. 2000).
ADC Telecommunications, Inc., “BroadWire™ 24-Port Rear Access MDU ADSL Splitter Chassis Installation Guide”, pp. 1-14 (Oct.2000).

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