US5111497A — Alarm and test system for a digital added main li…

Claim 1

Independent Claim 132 words

A test system for a digital main line system, said digital main line system including a line card for conversion of analog signals to digital signals and a remote terminal for conversion of said digital signals to analog signals for use in subscriber telephonic equipment, said digital main line system adapted to transmit multiple telephonic signals in digital form from said line card to said remote terminal location over a single twisted pair, comprising: a) a remote terminal emulator at central office facilities for performing a line card test, said remote terminal emulator emulating output of said remote terminal with a predefined output pattern; and b) means for comparing a response of said line card to emulated output of said remote terminal emulator so as to detect failures in said line card.

Claim 2

Dependent Claim 132 words

A test system for a digital main line system, said digital main line system including a line card for conversion of analog signals to digital signals and a remote terminal for conversion of said digital signals to analog signals for use in subscriber telephonic equipment, said digital main line system adapted to transmit multiple telephonic signals in digital form from said line card to said remote terminal location over a single twisted pair, comprising: a) a remote terminal emulator at central office facilities for performing a line card test, said remote terminal emulator emulating output of said remote terminal with a predefined output pattern; and b) means for comparing a response of said line card to emulated output of said remote terminal emulator so as to detect failures in said line card.

Claim 3

Dependent Claim 41 words

The test system as recited in claim 1 further comprising a voltage source and current meter attachable to said twisted pair for performing a twisted pair test, said voltage source and current meter adapted to detect failures in said twisted pair.

Claim 4

Dependent Claim 60 words

The test system as recited in claims 1 or 2 further comprising: a) a line card emulator for performing a remote terminal test, said line card emulator emulating output of said line card for transmission over said twisted pair; and b) means for applying and detecting terminations at said remote terminal, so as to detect failures in said remote terminal.

Claim 5

Dependent Claim 82 words

The test system as recited in claims 1 or 2 further comprising means for performing a channel test, said means for performing a channel test comprising: a) a voice frequency emulator, said voice frequency emulator connected to said line card for conversion to a digital signal for transmission over said twisted pair to said remote terminal; and b) means for evaluating a returned reflected signal so as to evaluate the function of the line card, the twisted pair and the remote terminal.

Claim 6

Dependent Claim 34 words

The test system as recited in claim 3 further comprising logic means in said test system for determining a location of a failure in said line card, said twisted pair, and said remote terminal.

Claim 7

Dependent Claim 34 words

The test system as recited in claim 4 further comprising logic means in said test system for determining a location of a failure in said line card, said twisted pair, and said remote terminal.

Claim 8

Dependent Claim 49 words

The test system as recited in claim 2 further comprising a pair gain test controller interface to said test system, said interface adapted to receive test request information from a PGTC, test selected portions of said digital added main line system, and output a resistive signature to said PGTC.

Claim 9

Dependent Claim 40 words

The test system as recited in claim 1 further comprising means for serially connecting a plurality of line cards at said central office facilities to said remote terminal emulator so as to detect failures in said plurality of line cards.

Claim 10

Dependent Claim 36 words

The test system as recited in claim 2 further comprising means for serially connecting a plurality of twisted pairs to said voltage source current meters so as to detect failures in said plurality of twisted pairs.

Claim 11

Dependent Claim 35 words

The test system as recited in claim 3 further comprising means for serially connecting a plurality of remote terminals to said line card emulator so as to detect failures in said plurality of remote terminals.

Claim 12

Dependent Claim 35 words

The test system as recited in claim 1 wherein said response of said line card indicates a failure in said line card when an analog to digital conversion portion of said line card is inoperative.

Claim 13

Dependent Claim 33 words

The test system as recited in claim 3 wherein said terminations are indicative of a failure in said remote terminal when an analog to digital conversion portion of said remote terminal is inoperative.

Claim 14

Dependent Claim 29 words

The test system as recited in claim 1 further comprising an operating system interface for communicating indications of failures in said line card to a telephone company operating system.

Claim 15

Dependent Claim 42 words

The test system as recited in claim 5 wherein said logic means comprises first and second microprocessors, said first microprocessor programmed to act as an input/output control device and said second microprocessor programmed to manage tests of at least said line card.

Claim 16

Dependent Claim 89 words

The test system as recited in claim 5 wherein said means for determining a location is programmed to: a) perform said channel test, said channel test testing the functionality of all of said remote terminal, twisted pair, and line card; b) if said channel test is not successful, perform said line card test using said remote terminal emulator, and perform said twisted pair test using said voltage source current meter; and c) if said twisted pair test is successful, perform said remote terminal test using said line card emulator.

Claim 17

Dependent Claim 40 words

The test system as recited in claim 15 wherein said means for detecting a location is further programmed to test whether one or more lines of said digital added main line system are in use before performing said channel test.

Claim 18

Dependent Claim 80 words

The test system as recited in claim 4 wherein said test system is programmed to perform said channel test by the steps of: a) selecting a line; b) disconnecting the selected line from a telephone exchange; c) performing a test request message test; d) performing an absorbent test of the selected line; e) performing an on-hook test of the selected line; f) performing a ring test of the selected line; and g) performing a reflective test of the selected line.

Claim 19

Dependent Claim 87 words

The test system as recited in claim 3 wherein said test system is programmed to perform said remote terminal test by the steps of: a) connecting said line card emulator to a selected line; b) connecting a remote terminal on said selected line to an absorbent load; c) connecting a voice frequency generator to said line card emulator; and d) reading a reflected voltage on said selected line and comparing the reflected voltage to a reference voltage so as to determine if said remote terminal is functioning.

Claim 20

Dependent Claim 44 words

The test system as recited in claim 18 wherein said test system is further programmed to: a) perform an on-hook test of said remote terminal; b) perform a ring request of said remote terminal; and c) perform a reflective test of said remote terminal.

Claim 21

Dependent Claim 125 words

The test system as recited in claim 5 wherein said test system further comprises: a) means for applying a first voltage to a tip wire of said twisted pair; b) means for measuring a current to said tip wire; c) means for applying said first voltage to a ring wire of said twisted pair; d) means for measuring a current to said ring wire; e) means for ground said ring wire and applying said first voltage to said ring wire; and f) means for grounding said tip wire and applying said first voltage to said ring wire; and g) means for applying a second voltage to said tip wire, said ring wire grounded, said second voltage activating a maintenance termination unit in said remote terminal.

Claim 22

Independent Claim 153 words

A method of testing a digital added main line, said digital added main line comprising a line card for conversion of multiple analog signals at a local exchange to digital signals for transmission over a single twisted pair to a subscriber location, and a remote terminal for conversion of said digital signals to analog signals for use by subscriber equipment, said method comprising the steps of: a) emulating an analog signal at an input to said line card; b) converting said emulated analog signal to a digital signal for transmission over said twisted pair to said remote terminal; c) converting said digital signal at said remote terminal to an analog signal and retransmitting a reflected signal to said line card; and d) comparing said reflected signal to a reference standard, a deviation from said standard indicating a failure in at least one of said line card, said remote terminal, and said twisted pair.

Claim 23

Independent Claim 153 words

A method of testing a digital added main line, said digital added main line comprising a line card for conversion of multiple analog signals at a local exchange to digital signals for transmission over a single twisted pair to a subscriber location, and a remote terminal for conversion of said digital signals to analog signals for use by subscriber equipment, said method comprising the steps of: a) emulating an analog signal at an input to said line card; b) converting said emulated analog signal to a digital signal for transmission over said twisted pair to said remote terminal; c) converting said digital signal at said remote terminal to an analog signal and retransmitting a reflected signal to said line card; and d) comparing said reflected signal to a reference standard, a deviation from said standard indicating a failure in at least one of said line card, said remote terminal, and said twisted pair.

Claim 24

Dependent Claim 133 words

The method as recited in claim 21 further comprising the step of testing said line card, said step of testing said line card comprising the steps of: a) connecting a remote terminal emulator to an output of said line card, said remote terminal emulator emulating a response of a functional remote terminal to digital signals from said line card; b) emulating an analog signal at an input to said line card; c) converting said emulated analog signal to a digital signal for transmission to said remote terminal emulator; d) converting said digital signal at said remote terminal emulator to an analog signal and retransmitting a reflected signal to said line card; and e) comparing said reflected signal to a reference standard, a deviation from said standard indicating a failure in said line card.

Claim 25

Dependent Claim 85 words

The method as recited in claim 21 further comprising the step of testing said twisted pair, said step of testing said twisted pair further comprising the steps of: a) applying a first voltage to a tip wire of said twisted pair, said first voltage not activating a maintenance termination unit in said remote terminal; b) measuring a current to said tip wire; c) applying said first voltage to said tip wire with said ring wire grounded; and d) measuring a current to said tip wire.

Claim 26

Dependent Claim 110 words

The test system as recited in claim 21 further comprising the step of testing said remote terminal, said step of testing said remote terminal further comprising the steps of: a) connecting a line card emulator to said twisted pair, said line card emulator emulating output of a functioning line card; b) connecting an absorbent load at an output of said remote terminal; c) transmitting a signal to said remote terminal and reading a reflected voltage from said line card; d) disconnecting said absorbent load at said remote terminal; e) connecting a reflective termination to an output of said remote terminal; and f) reading a reflected voltage from said line card.

Claim 27

Independent Claim 128 words

A method of testing a digital added main line, said digital added main line comprising a line card for conversion of multiple analog signals at a local exchange to digital signals for transmission over a single twisted pair to a subscriber location, and a remote terminal for conversion of said digital signals to analog signals for use by subscriber equipment, said method comprising the steps of: a) performing a channel test of said digital added main line, said channel test testing all of said line card, said remote terminal, and said twisted pair; b) performing a test of said line card using emulated remote terminal output; c) performing a test of said twisted pair; and d) performing a test of said remote terminal using emulated line card output.

Claim 28

Independent Claim 128 words

A method of testing a digital added main line, said digital added main line comprising a line card for conversion of multiple analog signals at a local exchange to digital signals for transmission over a single twisted pair to a subscriber location, and a remote terminal for conversion of said digital signals to analog signals for use by subscriber equipment, said method comprising the steps of: a) performing a channel test of said digital added main line, said channel test testing all of said line card, said remote terminal, and said twisted pair; b) performing a test of said line card using emulated remote terminal output; c) performing a test of said twisted pair; and d) performing a test of said remote terminal using emulated line card output.

Claim 29

Independent Claim 326 words

A method of testing a digital added main line, said digital added main line comprising a line card for conversion of multiple analog signals at a local exchange to digital signals for transmission over a single twisted pair to a subscriber location, and a remote terminal for conversion of said digital signals to analog signals for use by subscriber equipment, said method comprising the steps of: a) performing a channel test of said digital added main line, said channel test testing all of said line card, said remote terminal, and said twisted pair, said channel test comprising the steps of: i) connecting a reflective load to an output of said remote terminal; ii) emulating an analog signal to an input of said line card; and iii) comparing a reflected signal at said line card to a reference value; b) performing a test of said line card using emulated remote terminal signals, said test of said line card comprising the steps of: i) connecting a remote terminal emulator to an output of said line card; ii) connecting a remote terminal emulator to an output of said remote terminal emulator; iii) emulating an analog signal to an input of said line card; iv) comparing a reflected signal at said line card to a reference value; c) performing a test of said twisted pair, said test of a twisted pair comprising the steps of: i) applying a first voltage to a first wire of said twisted pair; ii) measuring a current to said first wire; iii) applying said first voltage to said first wire with a second wire grounded; and iv) measuring a current to said first wire; d) performing a test of said remote terminal using emulated line card output, said test of said remote terminal comprising the steps of: i) emulating output of a line card to an input of said remote terminal; and ii) comparing a reflected voltage from said remote terminal to a reference standard.

Claim 30

Independent Claim 326 words

A method of testing a digital added main line, said digital added main line comprising a line card for conversion of multiple analog signals at a local exchange to digital signals for transmission over a single twisted pair to a subscriber location, and a remote terminal for conversion of said digital signals to analog signals for use by subscriber equipment, said method comprising the steps of: a) performing a channel test of said digital added main line, said channel test testing all of said line card, said remote terminal, and said twisted pair, said channel test comprising the steps of: i) connecting a reflective load to an output of said remote terminal; ii) emulating an analog signal to an input of said line card; and iii) comparing a reflected signal at said line card to a reference value; b) performing a test of said line card using emulated remote terminal signals, said test of said line card comprising the steps of: i) connecting a remote terminal emulator to an output of said line card; ii) connecting a remote terminal emulator to an output of said remote terminal emulator; iii) emulating an analog signal to an input of said line card; iv) comparing a reflected signal at said line card to a reference value; c) performing a test of said twisted pair, said test of a twisted pair comprising the steps of: i) applying a first voltage to a first wire of said twisted pair; ii) measuring a current to said first wire; iii) applying said first voltage to said first wire with a second wire grounded; and iv) measuring a current to said first wire; d) performing a test of said remote terminal using emulated line card output, said test of said remote terminal comprising the steps of: i) emulating output of a line card to an input of said remote terminal; and ii) comparing a reflected voltage from said remote terminal to a reference standard.

Claim 31

Dependent Claim 130 words

A test system for a digital main line system, said digital main line system including a line card for conversion of analog signals to digital signals and a remote terminal for conversion of said digital signals to analog signals for use in subscribed telephonic equipment, said digital main line system adapted to transmit multiple telephonic signals in digital form from said line card to said remote terminal over a single twisted pair, comprising: a) a line card emulator at central office facilities for performing a remote terminal test, said line card emulator emulating output of said line card with a defined data pattern; b) means for comparing a response of said remote terminal to emulated output of said line card emulator so as to detect failures in said remote terminal.

Claim 32

Dependent Claim 130 words

A test system for a digital main line system, said digital main line system including a line card for conversion of analog signals to digital signals and a remote terminal for conversion of said digital signals to analog signals for use in subscribed telephonic equipment, said digital main line system adapted to transmit multiple telephonic signals in digital form from said line card to said remote terminal over a single twisted pair, comprising: a) a line card emulator at central office facilities for performing a remote terminal test, said line card emulator emulating output of said line card with a defined data pattern; b) means for comparing a response of said remote terminal to emulated output of said line card emulator so as to detect failures in said remote terminal.

Claim 33

Dependent Claim 140 words

An enclosure for telecommunications equipment comprising: a) a frame, said frame defining a limited access region and an accessible region, said limited access region comprising limited access telephone line connections, said accessible region comprising accessible telephone line connections; b) a first cover over said limited access region, said cover permitting access to said limited access region upon release of an access restrictive fastener; c) a second cover over said accessible region, said second cover permitting access to said accessible region upon release of a second fastener; and d) a components case, said component case enclosing at least one electronics component for processing signals from and to said limited access telephone line connections and said accessible telephone line connections, said component attached to said accessible telephone line connections and said limited access telephone line connections with a socket and plug assembly.

Claim 34

Dependent Claim 140 words

An enclosure for telecommunications equipment comprising: a) a frame, said frame defining a limited access region and an accessible region, said limited access region comprising limited access telephone line connections, said accessible region comprising accessible telephone line connections; b) a first cover over said limited access region, said cover permitting access to said limited access region upon release of an access restrictive fastener; c) a second cover over said accessible region, said second cover permitting access to said accessible region upon release of a second fastener; and d) a components case, said component case enclosing at least one electronics component for processing signals from and to said limited access telephone line connections and said accessible telephone line connections, said component attached to said accessible telephone line connections and said limited access telephone line connections with a socket and plug assembly.

Claim 35

Dependent Claim 26 words

The enclosure as recited in claim 28 wherein said components case is secured to said frame with at least one fastener in said limited access region.

Claim 36

Dependent Claim 38 words

The enclosure as recited in claim 28 wherein said at least one component for processing signals comprises a circuit board for conversion of digital signals from a twisted pair to analog signals for use in subscriber telephone equipment.

Claim 37

Dependent Claim 32 words

The enclosure as recited in claim 25 wherein said components case is secure to said at least one of said components, said components removed from said socket upon removal of said case.

Claim 38

Dependent Claim 16 words

The enclosure as recited in claim 28 wherein said first and second covers comprise hinged doors.

Claim 39

Dependent Claim 34 words

The enclosure as recited in claim 32 wherein said components case comprises a skirt extending downward over said doors, said doors hinged to move downward away from said skirt upon release of said fasteners.

Claim 40

Dependent Claim 20 words

The enclosure as recited in claim 28 further comprising a seal for limiting ingress of environmental contaminants to said case.

Claim 41

Dependent Claim 23 words

The enclosure as recited in claim 28 wherein said components case further comprises an environmental sealing material over at least one opening thereof.

Claim 42

Dependent Claim 16 words

The enclosure as recited in claim 35 wherein said environmental sealing material comprises a hot melt.

Claim 43

Dependent Claim 13 words

The enclosure as recited in claim 36 wherein said hot melt is S1149.

Claim 44

Dependent Claim 18 words

The enclosure as recited in claim 28 further comprising a gel seal in said socket and plug assembly.

Claim 45

Dependent Claim 20 words

The enclosure as recited in claim 38 wherein said gel is selected from the group of urethanes, silicones, and styrene-ethylene-butylene-styrenes.

Claim 46

Dependent Claim 31 words

The enclosure as recited in claim 38 wherein said gel has a cone penetration value of between about 50 and 350×10 -1 mm and an ultimate elongation of at least 50%.

Claim 47

Dependent Claim 23 words

The enclosure as recited in claim 40 wherein said gel has a cone penetration value of between about 100 to 300×10 -1 mm.

Claim 48

Dependent Claim 23 words

The enclosure as recited in claim 40 wherein said gel has a cone penetration value of between about 100 to 250×10 -1 mm.

Claim 49

Dependent Claim 18 words

The enclosure as recited in claim 40 wherein said gel has an ultimate elongation of at least 100%.

Claim 50

Dependent Claim 18 words

The enclosure as recited in claim 40 wherein said gel has an ultimate elongation of at least 200%.

Claim 51

Dependent Claim 21 words

The enclosure as recited in claim 28 further comprising a switch for detection of an open condition of said first cover.

Claim 52

Dependent Claim 173 words

An environmental enclosure for protection of electronic equipment used for analog to digital telephonic signals at a subscriber location, comprising: a) a frame, said frame partially enclosing a telephone company twisted pair block and a user terminal block for connection of subscriber equipment; b) a first hinged door for enclosing said twisted pair block, said hinged door securable to said frame with a fastener, said fastener limiting access of a subscriber to said twisted pair block; c) a second hinged door for enclosing said block for connection of subscriber equipment, said first and said second hinged doors rotatable about an axis and slidable along said axis from a first position to a second position; d) an electronics board case, said electronics board case electrically connectable to said block for connection of subscriber equipment and said twisted pair block with a socket and plug assembly on top of said frame, said electronics board case secured to said frame mechanically with at least one fastener accessible from a region enclosed by said first hinged door.

Claim 53

Dependent Claim 173 words

An environmental enclosure for protection of electronic equipment used for analog to digital telephonic signals at a subscriber location, comprising: a) a frame, said frame partially enclosing a telephone company twisted pair block and a user terminal block for connection of subscriber equipment; b) a first hinged door for enclosing said twisted pair block, said hinged door securable to said frame with a fastener, said fastener limiting access of a subscriber to said twisted pair block; c) a second hinged door for enclosing said block for connection of subscriber equipment, said first and said second hinged doors rotatable about an axis and slidable along said axis from a first position to a second position; d) an electronics board case, said electronics board case electrically connectable to said block for connection of subscriber equipment and said twisted pair block with a socket and plug assembly on top of said frame, said electronics board case secured to said frame mechanically with at least one fastener accessible from a region enclosed by said first hinged door.

Claim 54

Dependent Claim 99 words

Apparatus for connecting first and second telephone lines alternately to a subscriber location and to test equipment comprising: a) a first connection means containing first, second, third, and fourth electrical conductors, said first and second electrical conductors providing telephone signals, said third and fourth conductors electrically connectable to subscriber equipment, said connection means connectable to said test equipment; and b) a second connection means connectable with said first connection means, said connection means comprising a first shunt conductor for connecting said first and said third conductors, and a second shunt conductor for connecting said second and said fourth conductors.

Claim 55

Dependent Claim 99 words

Apparatus for connecting first and second telephone lines alternately to a subscriber location and to test equipment comprising: a) a first connection means containing first, second, third, and fourth electrical conductors, said first and second electrical conductors providing telephone signals, said third and fourth conductors electrically connectable to subscriber equipment, said connection means connectable to said test equipment; and b) a second connection means connectable with said first connection means, said connection means comprising a first shunt conductor for connecting said first and said third conductors, and a second shunt conductor for connecting said second and said fourth conductors.

Claim 56

Dependent Claim 15 words

Apparatus as recited in claim 47 wherein said first connection means is an RJ11 socket.

Claim 57

Dependent Claim 19 words

Apparatus as recited in claim 48 further comprising said test equipment, said test equipment further comprising a RJ11 plug.

Claim 58

Dependent Claim 20 words

Apparatus as recited in claim 47 wherein said second connection means is shaped in the form of an RJ11 plug.

Claim 59

Dependent Claim 45 words

Apparatus as recited in claim 50 wherein: a) said first connection means is an RJ11 socket; b) said first shunt conductor electrically connects first and third terminals in said RJ11 socket; c) said second shunt conductor connects fourth and sixth terminals in said RJ11 socket.

Claim 60

Dependent Claim 24 words

Apparatus as recited in claim 47 wherein said second connection means contains no conductors extending out of a body of said second connection means.

Claim 61

Dependent Claim 17 words

Apparatus as recited in claim 47 further comprising sealing means for environmentally protecting said first connection means.

Claim 62

Dependent Claim 27 words

Apparatus as recited in claim 53 wherein said sealing means comprises a gel in at least one of said first connection means or said second connection means.

Claim 63

Dependent Claim 28 words

Apparatus as recited in claim 53 wherein said gel has a cone penetration value of 50 to 350×10 -1 mm and an ultimate elongation of at least 50%.

Claim 64

Dependent Claim 28 words

Apparatus as recited in claim 53 wherein said gel has a cone penetration value of 100 to 300×10 -1 mm and an ultimate elongation of at least 100%.

Claim 65

Dependent Claim 28 words

Apparatus as recited in claim 53 wherein said gel has a cone penetration value of 100 to 250×10 -1 mm and an ultimate elongation of at least 200%.

Claim 66

Dependent Claim 24 words

Apparatus as recited in claim 54 wherein at least a portion of said gel is located in a trench around said first connection means.

Claim 67

Dependent Claim 24 words

Apparatus as recited in claim 54 wherein at least a portion of said gel is located in a trench around said second connection means.

Claim 68

Dependent Claim 23 words

Apparatus as recited in claim 54 wherein said second connection means is a plug, said trench formed by a cap around said plug.

Claim 69

Dependent Claim 15 words

Apparatus as recited in claim 60 wherein said plug is a male RJ11 compatible plug.

Claim 70

Dependent Claim 167 words

A service module for alternately connecting subscriber tip and ring lines and service means comprising: a) an RJ11 socket; b) a first electrical conductor connecting a first terminal of said female RJ11 to a tip line in a subscriber location; c) a second electrical conductor connecting a second terminal of said female RJ11 to a ring line in a subscriber location; d) a third electrical conductor connecting a third terminal of said female RJ11 to a means for providing tip signals from a telephone switch; e) a forth electrical conductor connecting a fourth terminal of said female RJ11 to a means for providing ring signals from a telephone switch; and f) an RJ11 plug insertable in said female RJ11 socket, said RJ11 plug comprising: i) a first shunt conductor for connecting said first electrical conductor and said third electrical conductor; and ii) a second shunt conductor for connecting said second electrical conductor and said fourth electrical conductor when said RJ11 plug is inserted in said RJ11 socket.

Claim 71

Dependent Claim 167 words

A service module for alternately connecting subscriber tip and ring lines and service means comprising: a) an RJ11 socket; b) a first electrical conductor connecting a first terminal of said female RJ11 to a tip line in a subscriber location; c) a second electrical conductor connecting a second terminal of said female RJ11 to a ring line in a subscriber location; d) a third electrical conductor connecting a third terminal of said female RJ11 to a means for providing tip signals from a telephone switch; e) a forth electrical conductor connecting a fourth terminal of said female RJ11 to a means for providing ring signals from a telephone switch; and f) an RJ11 plug insertable in said female RJ11 socket, said RJ11 plug comprising: i) a first shunt conductor for connecting said first electrical conductor and said third electrical conductor; and ii) a second shunt conductor for connecting said second electrical conductor and said fourth electrical conductor when said RJ11 plug is inserted in said RJ11 socket.

Claim 72

Dependent Claim 19 words

Apparatus as recited in claim 62 wherein said RJ11 plug contains no conductors extending out of a body thereof.

Claim 73

Dependent Claim 16 words

Apparatus as recited in claim 62 further comprising sealing means for environmentally protecting said RJ11 socket.

Claim 74

Dependent Claim 21 words

Apparatus as recited in claim 64 wherein said sealing means comprises in at least one of said RJ11 plug or socket.

Claim 75

Dependent Claim 28 words

Apparatus as recited in claim 65 wherein said gel has a cone penetration value of 50 to 350×10 -1 mm and an ultimate elongation of at least 50%.

Claim 76

Dependent Claim 28 words

Apparatus as recited in claim 65 wherein said gel has a cone penetration value of 100 to 300×10 -1 mm and an ultimate elongation of at least 100%.

Claim 77

Dependent Claim 28 words

Apparatus as recited in claim 65 wherein said gel has a cone penetration value of 100 to 250×10 -1 mm and an ultimate elongation of at least 200%.

Claim 78

Dependent Claim 24 words

Apparatus as recited in claim 65 wherein at least a portion of said gel is located in a trench around said first connection means.

Claim 79

Dependent Claim 23 words

Apparatus as recited in claim 65 wherein at least a portion of said gel is located in a trench around said RJ11 plug.

Claim 80

Dependent Claim 17 words

Apparatus as recited in claim 65 wherein said trench is formed by a cap around said plug.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-05-05	1995-11-04	1996-05-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-05-05	1999-11-04	2000-05-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-05-05	2003-11-04	2004-05-05	$7700.00	Window Closed / Lapsed

Alarm and test system for a digital added main line

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