Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line
Reexamination Certificate
2001-01-05
2003-10-14
Tieu, Binh (Department: 2643)
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Of trunk or long line
C379S001040, C379S022020, C379S022050, C379S022070, C379S024000, C379S027030, C379S027060
Reexamination Certificate
active
06633628
ABSTRACT:
BACKGROUND OF THE INVENTION
A. Field of the Invention
The present invention is related to transceivers in communication systems. In particular, the present invention relates to an apparatus and method for selecting a supported signal path for a transceiver in a communication system.
B. Description of the Related Art
Most modem telephone customer locations typically have four wires coming into the customer premise location from the central office of a telephone company.
FIG. 1
is a block diagram showing an exemplary signal path configuration between a central office and a customer premise location, such as a person's home. The customer premises boundary
102
is the demarcation point between a loop
104
to a central office, and a customer premise location
106
. The loop
104
typically consists of at least one pair of wires to facilitate data transmission, such as an analog telephone communication. Other services such as ISDN (Integrated Services Digital Network), or high speed network access, may also be provided.
Two pairs are shown in FIG.
1
: a first pair
108
,
110
is providing high speed service, and a second pair
112
,
114
is providing low speed service. The two pairs
108
,
110
and
112
,
114
are connected to the customer premise location
106
, where they may be used to distribute communication services throughout the customer premise location
106
.
In
FIG. 1
, only one distribution path is shown and is terminated at an RJ-11 jack
116
. The high speed service pair
108
,
110
is shown as being connected to the outer pair
118
,
120
in the customer premise location
106
. The low speed service pair
112
,
114
is shown as being connected to the inner pair
122
,
124
at the customer premise location
106
. The outer pair tip wire
118
is shown as connected to the second pin
126
of the RJ-11 jack
116
, and the outer pair ring wire
120
is shown as connected to the fifth pin
128
of the RJ-11 jack
116
. The inner pair tip wire
122
is shown as connected to the third pin
130
of the RJ-11 jack
116
, and the inner pair ring wire
124
is shown as connected to the fourth pin
132
of the RJ-11 jack
116
. The inner pair of wires
122
,
124
located on the third and fourth pins
130
,
132
in the RJ-11 jack
116
are usually used for low speed services, such as standard telephone service. The outer pair
118
,
120
located on the second and fifth pins
126
,
128
of the RJ-11 jack
116
have typically been used for higher speed services, such as ISDN. The first and sixth pairs
134
,
136
of the RJ-11 jack
116
are not used. Some communication systems may utilize the first and sixth pins
134
,
136
, such as if a third pair is used to provide additional or supplemental communication services. Other distribution systems and other types of jacks are often commonly used. In the present invention, it may be implemented in many of these configurations as well.
Although the configuration shown in
FIG. 1
has been the standard and desired implementation, in reality there has been much variation due to, for example, to installer error (or inconsistency) and customer modification to equipment.
As a result, it has been difficult to design equipment that relies on a standard mapping of services to pin configurations.
Needed is an apparatus and method that is able to sense the configuration of customer premises' wiring, and that can, accordingly, adapt to the sensed configuration, enabling a device, such as a transceiver, to utilize the proper wires for the services being offered.
Also needed is a digital subscriber line transceiver that is able to automatically determine the type of DSL service being provided and the signal path over which the service is being provided.
REFERENCES:
patent: 5784558 (1998-07-01), Emerson et al.
patent: 6101216 (2000-08-01), Henderson et al.
patent: 6151335 (2000-11-01), Ko et al.
patent: 6177801 (2001-01-01), Chong
patent: 6215855 (2001-04-01), Schneider
patent: 6236714 (2001-05-01), Zheng et al.
patent: 6266348 (2001-07-01), Gross et al.
patent: 6272209 (2001-08-01), Bridger et al.
patent: 6292468 (2001-09-01), Sanderson
patent: 6324167 (2001-11-01), Starr
patent: 6371780 (2002-04-01), Aponte et al.
patent: 6373923 (2002-04-01), Williamson et al.
patent: 6385297 (2002-05-01), Faulkner et al.
patent: 6396837 (2002-05-01), Wang et al.
patent: 6404774 (2002-06-01), Jenness
patent: 6477238 (2002-11-01), Schneider et al.
International Telecommunications Union (ITU)—Telecommunication Standardization Sector, Study Group 15, Temporary Document RB-022-E, “Splitterless G.Lite Interoperability with ANSI T1.413 and/or G.DMT”, Redbank, NJ Oct. 27-29, 1997.
ADSL Forum TR-001, “Asymmetric Digital Subscriber Line Forum”, May 1996, pp. 1-7.
“G-Lite: Making the Internet Fast Enough for Consumers”, Aware, Inc., 40 Middlesex Turnpike,Bedford, MA 01730, 1999, pp. 1-8.
Asymmetric Digital Subscriber Line Forum Technical Report TR-007, “Interfaces and system Configurations for ADSL: Customer Premises”, Mar. 1998, pp. 1-26.
International Telecommunication Union (ITU-T), Draft G.992.1 (ex:G.dmt), “Asymmetrical Digital Subscriber Line (ADSL) Transceivers”, 1999. pp. 1-238.
International Telecommunications Union (ITU-T), Draft G.992.2, Splitterless Asymmetrical Digital Subscriber Line (ADSL) Transceivers, 1999. pp. 1-152.
Adams Doug
Giovannoni Michael
Landry James
Linder Donald
3Com Corporation
McDonnell & Boehnen Hulbert & Berghoff
Tieu Binh
LandOfFree
Apparatus and method for selecting a supported signal path... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for selecting a supported signal path..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for selecting a supported signal path... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3139626