CZ206094A3 - Telecommunication apparatus - Google Patents

Abstract

A hybrid fiber in the loop telephony system. The system provides for highly reliable telephone service, even during electric utility company power failures. The system generally includes an ONU (4) for conversion of optical signals to electrical, digital signals. The electrical, digital signals are transmitted to a subscriber location (12). The subscriber location utilizes an NID (20) having a ring generator (306) and analog-to-digital conversion equipment (304). Mechanical features of the system are also disclosed.

Description

In one embodiment of the invention, for example, it provides an improved telecommunication device comprising an optical fiber or other digital neidium in combination with signal transmission over a metal medium.

State of the art;

Optical telephone networks have become very widespread in recent years. Optical devices have a number of advantages over devices using a metal medium, including a substantially wider wavelength band. Unfortunately, most subscriber devices in a telecommunications network in the United States and elsewhere rely on a metallic (usually copper) transmission medium.

One important limitation in transmitting a telephone signal to a donor in such hybrid systems is the need to power the subscriber telephone equipment. Because optical fibers do not conduct electricity, it is clear that other equipment must be used to transmit power to the central office and to the subscriber. Pollen

thus developed by the calf £ o ηηí equipment, which prov adolescence transmission opi. signals to one o π í s t. and, e.g. to the central offices. That's how you are the anals are then ⁸ converted to electronic get duals for the final transfer to •: r · _; : .ní metal i. Tyt. o combined o p t. i c k o / e 1 ektron i c k é September Zen S ř? usual and oz n a č u j í as September and September len to iir obl én j e t  1'OChU ěbt í žn ě j š i, j: i r r, t.ožě FEo requires that tel efonní spol ečncist. supplies 1 no., dos t a t. e k t.- / n e r g i e

needed for rozez smelling five.i standam Jn i c Τι 1 ef i mn ích pr i j. · o j ek ie each line. Because standard 1 no phones have at ringing high consumption energy and, must be such systems on top? ··· '/

sufficient capacity.

 1 eden pří í st.ro i supplying energy in motion: i. ilním zč-iříz e η ť ί e? killed in Fig.1, such a device is common le denotes as pt. i «- ké thread k o drummer or PTTC device. management. How “I t'í? and mzku v and children, j e optical fiber bl used ' :> for whom a i kat: i 'ϊ i -kýc h data p and annals with optical sifovoi i 'unit (íjNÍ.I)

4. IiNl.1 ie? placed in the boarding house close to the participant's location

65 referred to as curb UNII.

Optical / electronic Cfl / E) conversion device 6 converts optical signals into a serial stream of electronic digital transmissions into the nu 11 i p1exping /

i. Mu 11 ip] exovación / dému 11. ip 1 exovacija signals intended for dû υ 11. ip 1 exovació under the control of the device converted by the amount converted converts the serial data stream from the U / E converter to digital signals. These digital signals are digital / analog (CCUDEC) and transmitted to the analog signals in the analog / digital converter 10 of the subscriber device 12, which is a home or office, using one or more metal wires 14The network interface device (NID) 18 in the subscriber device provides protection against lightning and power failure. The NID is also a site for connecting multiple subscriber devices 22 to the incoming twisted pair wire 14. The incoming twisted pair wires are often referred to by those skilled in the art as tags.

Energy is supplied to several ONUs (Ca to several participants) of the energy source 16. The energy source 16 is located close to the ONU

CIO ž 14) i.

that the dimensions of the supply cable 16 are and serve a relatively small number of ONUs within acceptable limits. The power source 16 preferably serves several UNIIs within a space of several square blocks. Four donors could use up to 20 Vat.t.s, given the requirement of five standard telephones for each house. Thus, it was often necessary to supply power to the ONU of long conductors, especially if the distances were large. In addition, power was still consumed because the 20 Hz square wave could not be used to ring the bells. Higher rectangular waves with a rectangular waveform must be filtered out of the supply line that is to ring, as call intersection would occur, especially at long distances. Removing these higher harmonics increases power consumption.

. A similar service is also required by the subscriber equipment, and in order to meet the regulatory requirement, it is also necessary to supply energy to the telephone device so that it works even in the event of a power failure.

sources ene r g i ·; · iiebo ke υζ · 1; «1 enenej zdroii enenie (KF’S) .16 Accordingly, it has been proposed to equip each ONU with batteries.

Although the device in Fig. 1 has met with considerable success, there are also some limitations. For example, because the peak power consumption of the telephone is high, the power source must be reasonably large spans and must often be located adjacent to ensure the small size of the leads to the PNU. Tyt? facilities are so large that it is often necessary to buy space to house this energy source, and local residences often become the source of energy sources. . Batteries are also a source of difficulty, especially if they are placed outdoors. Other difficulties with such devices include brief. battery life, especially in high-temperature packaging. Furthermore, because energy and optical fibers come from separate sources, further modifications are needed, digging trenches.

steed

i.ic n;

Other solutions have been proposed. For example, it has been proposed to feed optical fibers directly to a subscriber device and to introduce, into each subscriber device, 0 / E, MUX, and D / n devices. Such devices that the participant supplies which achieves a number of restrictions, including: 1) the requirement, nor nor; 2) Limitations in size efficiency. , affects the reliability of backup power supplies such as batteries when a normal power source is unavailable to the subscriber. Other details with such devices involve even a high cost because a laser is required. Uernia is required for the laser. Λ further .- as short as the life of each. <D j 1 S 1.1 i.

i: č a s t η í k a j e si inv source

Pr 11 threads.

By 1 o suggested the above problems.

Another solution should be designed to eliminate the power source and introduce its own metal conductors? from don to PNiJ, through which the delivery to LiNU is. In such solutions, it has been proposed to provide a power source using batteries located in the subscriber: a- oz: i- -r:

ΐ í? ri>'· i »ρ? ys i.»? ri -it / iisi í' Cuíol «π»? system ^j ny. ^T .. 'ír <»' - 'μί .nez. For example, when an ONU provides services to both subscribers and subscribers, users quickly find out

z.t? moru ni ii sete disconnect, přívoi.l energy

9465 and the system will work normally, except that on account. other users of the system. When all four users disconnect the power supply, the battery backup power supply will allow the system to continue working for a short time, but the telephone service may crash for all four users. If only some of the four users disconnect the power supply, the remaining users will also supply power to their neighbors' dci phones, which is of course an unfair situation. This arrangement is also unfair to subscribers who use their phones much less than their neighbors. Other limitations include the usual reliance on battery backup power, good disconnection when E / 0 equipment is being repaired, and the like. The limitation of the backup source includes even more problems.

From the above text, it is clear that an improved hybrid telephony device is needed.

The essence of the invention ^:

The present invention describes an improved telephone device. In accordance with one aspect of the present invention, the device is in the sense that the optical fibers transmit signals to the central device, but transmit telephone signals from the central wire from the central hybrid device to the subscribers.

In accordance with one aspect of the invention, the ONU includes a device for converting an optical signal to an electronic and demultiplexing device. The ONU is located, for example, at a curb or on a adjacent telephone pole and serves several users. Digital signals are fed to the subscriber's September C typ i cky to the office)

ONU using metal leads, such as a conventional twisted pair. In the subscriber facility

Cnapř. NID) the converter device and the ring generator are located.

d igi tal-analogové

Behen normal ^'1' · .. operation ie energy supplied to the D / A converter to the generator and ringing to the subscriber phones that resources Energi edi? il t vaneho participation in the transformer. In accordance with one particular aspect of the invention, outages are leaked backed up from a central telephone office

P ri vadenin e11 er gi e společnosti.

to ON 1.1

This energy is

It is fed by means of metal conductors, which are usually drawn together with optical fibers from the central office of rlo ONIJ. The power supply to the ONU is extremely reliable, because the central office will be equipped not only with a power source for the company, but also with backup generators, batteries and low-power phones. Tel during a power outage? in both the handset and is equipped on the hand phones are during outage with the implementation of the present invention.

alike. The user is equipped with bitches with low power consumption modes ^: ringing, and disconnected subscriber batteries .. Conventional power disconnected in accordance

In accordance with another specific aspect of the present invention, the metal conductors between the ONU and the subscriber are used not only to transmit digital signals from the ONU to the subscriber, but are also used to transmit the power necessary to operate low power telephones during power outages. Alternatively, it is possible to add a group of wires (small dimensions) between the ONU and the subscriber.

As in the first implementation, conventional telephones are preferably disconnected during power outages. Because the power required to ring low-power telephones is very small, small wires may be used between the ONU and the subscriber for power purposes. During normal operation, power is supplied to conventional user telephones from transformers located at the subscriber and power to the ONU is supplied from the bee. Thus, the high energy requirements of conventional telephones can be met without the need to install large wires from the central office to the ONU and from the ONU to the subscriber.

for:

Yippee

In accordance with other aspects of the invention, the need for casting low power telephones is eliminated. In accordance with these aspects, the energy of the transmissions from 0 'is the ringing cycle of the telephone

-T-1 - 1 ......

. / κ And you outside

Use a storage drip tor to satisfy. her? cy k 1 us swipe í 'grainy only connected more phones, energy handle.

also during outages to the subscriber, during a power outage changed so as to reduce the operation of the energy requirements on the part of the subscriber j In accordance with other aspects of the invention.

when. that has you use than can storage kapaeiíor .Ir b

65

Various embodiments of the invention provide, among other advantages, low power consumption, less or no batteries on the remote side, smaller or less expensive ONUs, and easier migration to T1, broadband, and fiber optic to the house.

One embodiment of the invention describes a telephone device comprising an optical fiber adapted to transmit digital signals representing telephone communication. The device also includes an optical interface with an optical / electronic conversion device connected to the optical fiber and a raultiplexing / deraultiplexing device connected to the optical / electronic device. From the multiplexing / demo 1 tipping device, more metal conductors lead to the subscriber, which transmit digital signals. On the subscriber side, the device includes a NID network interface device having a digital / analog converter and a ring generator.

A better understanding of the nature and advantages of the present invention may be realized by reference to the remainder of the specification and with reference to the accompanying drawings.

Giant. 1 Yippee and 1ustration Giant. 2 Yippee and lustration Ol.ir. 3 Yippee and 1ustration Giant. 4 Yippee and 1ustration Giant. 5 illustrates d

Overview of pictures in the drawings:

more lively hybrid telephone equipment; No implementations by the inventors;

embodiments of the invention;

still other embodiments of the invention; more strongly, NID pertains to one embodiment of the invention;

Giant. 6 illustrates in more detail a non-ring generator associated with one embodiment of the invention;

Giant. 7 illustrates a very condensed embodiment of the invention;

Giant. 8 is an illustration of the mechanical properties of one embodiment of the invention:

Fig. 9 illustrates an O.ATV / FITL device; and Fig. 10 illustrates the package.

DETAILED DESCRIPTION OF THE INVENTION

CONTENT:

]. Terminology

II. Description of the first preferred implementation (Low power phones)

III. Description of the second preferred implementation

IV. Description of the third preferred implementation (Example: m ο η n ý c v k i 11 s z v o e in)

V. Description of the fourth preferred implementation (Very compacted user equipment)

VI. Advanced applications

VII. Testing options

VIII. Packaging assembly and mechanical arrangement

IX. Conclusion

I. Terminology

In the following text, the following abbreviations are used with the following meanings:

CO - Central Office of the ONU - Optical Network Unit E / 0 - Electro / optical conversion device, which contains equipment for both conversions ^: electrical signals to optical and optical signals to electrical.

D / A - Digital-to-analog conversion includes a device for converting analog and for converting digital signals to devices that also signal to digital analog. Similarly, nu 1t. i ρ 1 exovac i / day u 11. i ρ 1 exovac í device i

AND·.

: not obousnerne

ΕΙΤΕ - Optical fiber in a loop, ř TI C - Opt.icke vTsakno vocoíiC] k orgmn.-n ϊ ku.

MUX - Mu 1t. i ρ 1 exovac í / clenu 1 t i p i exovac í zařízení.

REN - Ringing equivalent number.

SLIC - Subscriber loop interface circuit.

Standard telephone - A telephone that meets the requirements of the UEL0500 family of devices, which normally have a ringing equivalent number of about 1.

Low power telephone - A telephone with a ring number of about 1/2 the value of a standard telephone, an equivalent number less than 0.5, preferably even less. than 0.1 and preferably most preferably less than 0.03 /

Resigned resource unit.

preferably ring: í

RPU

Í.Í

9465

II. Description of the first preferred implementation (Low power phones)

Fig. 2 is an overview block diagram illustrating aspects of one embodiment of the present invention. As shown. the digital telephone signals are transmitted from 00 202 to the ONU 4 by means of the optical fiber 2 using a device well known to those skilled in the art. Energy is transferred through the metal conductors 204 from 00 to the ONU. In accordance with one preferred embodiment of the invention, the power supply at 00 and the conductors between 00 and ONU are designed as such. to provide adequate performance for ONUs connected to 00, but not for subscriber-located circuits, which will generally have higher peak requirements.

For 00, it is desirable not to supply power to generate ringing at the subscriber for all of his phones. Power is supplied from 00 to the ONU during normal operation and in the event of a power failure. 00 can supply power to the ONUs during a power supply failure using devices well known to those skilled in the art, such as generators and batteries. Because the peak load of the ONUs will be small (which does not require a large supply of power during conventional telephone ringing cycles), it is not necessary to use large strings or large fire sources between 00 and ONU.

kapaci tou.

In one ONU there are 0/0, conversion devices and multi-duplex.cvací: arizeni pnpoieny <H k ', - · Η 1, 4 k participants metal 12.

There are conventional twisted pair wires for digital signal transmissions

A c k o 1 i v is na o b r. 2 · brο br a z e n a jen j e d n a o a r a leading to the subscriber, it is obvious that more conductors can be used. The subscriber has a NIL) 20 unit, which contains conventional lightning protection. The NID 20 also includes a D / A conversion device and a device well known to those skilled in the art of the type known to the ring of the i1 c i gene.

Z NI I j to the subscriber devices 22, which are usually standard telephones and on-line devices.

Today's subscriber telephony requires • elkt:

the amount of enerqie especially during the ringing cycle. For example, generating a ring may require 3-4 Watts per 5 RENs to ring, plus one Watt for each additional REN. Appropriate power is supplied to the subscriber devices during normal operation via a supply)]] 206 through an AC / DC transformer 2.0B. If detected from operation.

In order to use a power failure, the conventional telephones 22 are disabled. In accordance with some embodiments, the conventional shutdowns are not only ringed during the power failure, but remain functional so that normal conversations are possible.

Because the ring generator supplies power to lines leading to other subscribers, the 20Hz ring cycle frequencies may not be filtered, only some. This will further reduce the foot of the ring generator.

to phones without higher harmonics or can be mesh for power

In order for a subscriber to take full advantage of the phones during a power outage, he is equipped with a low power telephone 210. Such phones require only a small amount of power and are partially more efficient in that they run only a limited amount of power (e.g. less than 1 Watt and preferably less than 0.3 to 0.5 Watt for the ring generator. For this reason, it is necessary to satisfy all energy requirements during a power failure by means of a twisted two-wire 14 of CC.

Tn to;

In addition, the demands on body consumption are low in energy

Pua by 11 connected basically just low energy teiefons coming to users using wires, their donons. These wires will not thread. due to n energy large dimensions neither between CC and ONU, and participants.

consumption, which can lead to high demands on or between ONUs is now 11 consumption.

in accordance with one variation of the system in FIG.

with low consumption replaced by a bell with low consumption

In accordance with i i: ut.o implementation, conventional telephones are still used for kouvr-i zae, but tyt.o telephones will not ring during

MlSÍ-ip i.úho bude UÁU Val.i.ú ι. · 11 ΓΌΖΟΓ11eri i na

Yeah

9465 Incoming call rings. In accordance with a preferred aspect of the invention, the package containing the transformer is designed to contain a low power bell, thereby minimizing the likelihood that the user will lose the ring.

Such low-power bells are supplied, for example, by rotating the polarity of the DC CDC voltage on the supply line. A diode and choke or time delay may be used to prevent the bell from ringing during normal DC polarity or normal ringing. Alternatively, as an energy source prq the bell is transmitted on a line 800 to 1000Hz. In accordance with these implementations, the bells would have a very high impedance for these high frequencies, but the speakers will sound at this frequency.

III. Description of the second preferred implementation

In accordance with alternative embodiments, energy is not supplied from CO even in cases of power failure, as shown in FIG. on which similar parts are indicated by the same references. Here, the user is equipped with a set of backup batteries with such a capacity that only phones with low demand can work. Because the energy requirements of low-power phones are low, the amount of battery required by the user is also small.

As shown in Fig. 3, a twisted double wire, e.g. copper, 500 feet long with a diameter of 22 avg, arrives at the user, kdf are again circuits providing lightning protection. The line board 802 is equipped with a ring generator 30_6 and a D / Λ converter 3_04.

During normal operation, the conventional telephones and the wiring board are powered by an AC / DC converter 308 supplied from the user's mains.

Charger converter

808

808 also keeps the battery 306 charged. During a power outage, low power 810 power is supplied from the batteries. Table 1 illustrates the energy requirements of a typical four-telephone system, as is the state of the phone immersion as illustrated in FIG.

AND

Ί I. '

Table 1

CALCULATED ENERGY VALUES

CEV voltage source ..................... 4 8 Volts / DC

Resistance Sources CEV 5000 ft Loop. 24 ga ... 257 Ohm

With one hanging phone: Energy to the phone ....

Energ i e Energy from AC / DC converter ........

to AC / DC converter .......

0.00 Watts 0.00 Watts 0.00 Watts

With one phone picked up:

Power to phone .......

Energy from AC / DC converter Energy to AC / DC converter

0.49 Watts 0.65 Watts 0.06 Watts

Energy to ONU .........................

Current to ONU ...........................

Energy from CO ............................

1,000 Watts 0.052 Amperes 2,494 Watts

Average power consumption of a 4-phone system 2.93 Watt. ’

ONU equipped with batteries for in case of emergency in accordance with your arrangement with the local board implementations is very desirable

Ό 0. . ... 2. cz 5 9 Vat.t.ů 18 Vat.t.ů numbers ΡΓΟ S ysteny, ve which cli Ί i · * ' ifí O l] á v á 11 i energy to telefc or ϋ .andard and TA -NWT-00309 s ε point e. see p ohvl.ni j O OkO 1 O «:» 1 Vat.t.ů p »Ř i o, ». * řC or V7 né nn ožst.ví energ 1 o, kt.er OU iS i 40 Watt at. Is therefore 2.T O Ί Π! oh • the i show 1 and above grains and seeds π i

65

- and 2 IV. F’opis third preferred implementation (Variable ringing cycle)

In accordance with one preferred aspect of the invention illustrated in Figure 4, the device may operate exclusively with standard telephones. In accordance with this aspect of the invention, the ONU 4 is arranged in a manner similar to FIG. In normal operation, power is supplied to the ONU from a central location, such as, for example, 00, while the subscriber device is powered from the subscriber device by an AC / DC converter 208. During a power failure at the subscriber, power is supplied to the subscriber. participant from 00 through ONU. This energy is transmitted by the twisted double wire, but it is a relatively small amount. To transmit a small amount of leg energy, the twisted double wires leading from 00 to the ONU have relatively small dimensions.

The amount of power that can be supplied from the ONU is often: insufficient to be able to ring conventional telephones, especially when some of them are connected to the subscriber.

Accordingly, at the moment when a power failure is detected, the capacitor 402 is kept charged during the power transmission by the twisted pair. If a ring signal is detected in the HII), conventional telephones are supplied with the energy required for ringing by a charge stored in a dropper.

In a preferred embodiment, it is a capacitor with a capacity between about 500 and 1000 .mu.l, although it will soon become apparent that a very wide range of values is permissible depending on the application.

During normal operation of the telephone in the event of a power failure, sufficient energy must be provided for recharging the drip torches and for normal power requirements · in a suspended state by the twist of a twisted two-wire coming into the apartment. It is therefore possible to provide short energy peaks with a high value (around 0.15 up to 0.5 Vattu) for ringing conventional telephones. At the same time, it is not necessary to install large wires from the ONU to the subscriber. In addition, the need provided by the customer is eliminated by eliminating the need for the subscriber to use batteries.

In accordance with this implementation, the line part cannot provide sufficient power if a large number of standard telephones are connected to the subscriber, even if the backup capacity compensates for the energy requirements. Therefore, in accordance with one preferred aspect of the invention, the NID 20 is equipped with a ring cycle modifying circuit 404. In accordance with this preferred embodiment of the invention, the device detects the occurrence of an extremely high load C for example a load greater than 0.75 watts during the ring cycle. If a load greater than the selected value is detected, the ring length during the ring cycle is modified by the ring cycle modifier circuit 404 to shorten the ring length to a value that does not significantly load the dropper 402. Thus, the active portion of the generator ring cycle is shortened. ringing.

In accordance with some implementations, the ring cycle modifying circuit shortens the ring cycle relative to the load on the system. Accordingly, during a power outage, the length of the ringing cycle at the subscriber will be shortened, but the telephones will otherwise function normally from the subscriber's point of view. Table 2 illustrates typical ring cycle times as a function of the number of connected telephones for a typical system having a backup capacity of 1,000 .mu.F.

Ί a bil 1 ka 2 Ring cycle times

Num. t.e 1 e f on ů Ring cycle length 1 i. ? s (? k. z v οι i ί, 0.4 se k. π ozvo π í 5 0.3 sec. Rings, 0.5 sec. Does not ring

Fig. 5 is a block diagram illustrating NID 20 in accordance

Also in the implementation of Fig. 4 in more detail. As shown herein, twisted pair wires supply telephone signals along with DC CDC) voltage coming primarily or exclusively for power outage situations. The twisted pair wires enter the device through a hybrid or pulse transformer 502. In one specific embodiment, it is a ZBK 50.5 / 103 pulse transformer from Siemens. Under normal conditions, 24V direct current (DC) is supplied to the device via a rectifier

65 connected to a twisted pair. and supplying power from 1 20V AC. ’power source. Adequate insulation is provided by Zener diodes 506.

The voltage converter 508 provides a 5V source for various integrated circuits in the device, while a 24V source is used; to supply the ringing generator 3 0 6. The power failure has flowed at the subscriber, the direct current (DC) voltage is supplied through twisted 'two wires to the subscriber, which is also connected to the ringing generator and to the voltage converter.

Digital telephone signals are transmitted to / received from CODECs, three of which are shown for illustration in Figure 5, although it will be appreciated that different numbers of CCIDECs 510 will be used depending on the number of lines the system will manage. 510 can be, for example, the MC 145505 model from Motorola. Each of the CODECs has, among other things, send (TR), receive (REC), clock (CLK), balance (DAL), and enable (E) pins. The primary purpose of these chips is to convert the incoming serial data stream into one or more analog signals for use on subscriber lines.

Analogly transmitted signals are transmitted to and signals received from SLICs 512, which are, for example, Tamura SLICv 51.2 also perform conversion from ..Ivou <; r á t y.

received TTC-124. on four

The operation of the CODECs is controlled according to the function generator 514. The timing of the system is controlled by the synchronous pulse collection chip 516 that is used to derive the clock from the incoming ones; data clock and control 51 ij, which may be, for example, a nodel MP041 from CTS. The function generator 514 may be implemented on an ASIC 'such as a gateway 170 from AGT. · The data channel 520 is used to transmit various data signals, warnings. , t-test information, etc.

The ring relay 522 is used to generate ring signals to ring the telephones in the direction of the ring generator 306. If power is supplied from twisted two wires, it may be. active part

- 16 • my non-ringer ringing cycle changed depending on the line load. For example, if a large number of standard telephones are connected on a single line, the ring generator reduces the time the telephones actually ring and / or increases the delay between rings. The ring relay transmits a signal frequency suitable for telephony ringing.

Data is transmitted to and from telephones by a device using pulse code modulation (PCM) by ping-pong in accordance with a preferred embodiment of the invention. For example, the system may use the first time slot for synchronization, the second third and fourth time for outgoing data, and leave the fifth time blank. The other three time slots can be used for incoming data, and the other time slot for transmitting such data as "hang-up", "testing," and the like.

It will be apparent to those skilled in the art that the aforementioned devices and circuitry are illustrative only and one of many circuitry that may be used in accordance with specific embodiments of the invention in implementing N1D. It can be, for example. The work of the NID is controlled by an appropriately programmed microprocessor, or the entire circuit can be implemented using discrete logic.

Giant. 6 illustrates a ring generator .306 in accordance with the embodiment of FIGS. 4 and 5. Energy is supplied to the ring bell in one of two foot paths. First, C02 lines are obtained from twisted pair wires and are used in the event of a power outage at the subscriber. Second, lines 604 receive energy from the transformer, preferably in the subscriber's room. During normal operation, if the telephone is to ring, the relay connects the contacts 608 at a frequency of eg 20Hz so that the telephones ring. Because the energy is not during normal premium operation, it can be used to remove the higher harmonic components of the 20 Hz signal 613. circuit RC 608, which results in a reduction of mutual interference of calls than lines when one line rings. Relays 607 are located at the contacts with output lines 61.1 to generate a 20Hz signal wave.

In a preferred manner, the reaction circuit is not an RC circuit

9465 connected when removed in the system.

Telephony ringtones run during a power outage because higher harmonic frequencies consume power

V e p e r e f f o n f o n s 608 relays with 20Hz, but the output to the telephones are used terminals 6.10.

is thus achieved by connecting the disconnected RC circuit so that for

The active ringing cycle of the ringing cycle is also modified during the power failure. The voltage controlled oscillator CVCO) 612 monitors the voltage on the conductor 618 and depending on the voltage therein; instead emits a rectangular wave with either a long or short cycle of active optoelectric enabled by a switch ringing i.

insulators

Output VCC) 612 controls the status relay

614 is during a power failure

609. The relay alternately connects the incoming DC to either the backup capacitor 616 or connects the backup capacitor to relay 608. As the voltage detected by VC.O decreases,; shortens the output time of the capacitor to the telephone line. For example, if 65V is detected on the line, the phone will ring for 1.5 seconds.

and the pause will be 4 seconds the ring time will drop to

When the voltage on line 618 drops to 60V, 1.2 sec., At 55V it will be 0.9 sec and less than 55V only 0 u ndy.

It will be apparent to those skilled in the art that the above-mentioned devices and connections

they are only i 1 ustrat. and vn i z a p o j i? ni, k te r é i e ra ož n é to use. in accordance with spec i fi ckou embodiments of the invention . Exemplary activity. • generator from smelling mussels be. controlled come programmed n i kr ·? p r o c e s o r em, or., mu that be the whole circuit i ηp1en entová n ponocí discrete log iky. In accordance u with others rea 1 3 for the price of the invention u is running outage

power supply of the subscriber -Nil) device at different voltage levels. In accordance with these implementations, the subscriber device is powered by a 48V source during normal operation. In the event of a power failure, the subscriber is supplied, firstly, by a voltage source through a twisted two-wire during a power failure and in the suspended state, and secondly by a higher voltage source, the melt is suspended. For example, the user may be. Equipped with 6V, 3 OnA through-twisted two-wire when suspended and powered. and I> - · by 23V source run states raised at II or pči 'j i' · JI í.

0465 obvious, there will be digital new boards and more coming

As will be appreciated by those skilled in the art in view of this disclosure, the conversion of the above-mentioned system to a T1 system to a subscriber is very easy because the system up to the NID. Such conversions will require installation in the NID and will otherwise be easily performed without the installation of additional wires to the subscriber.

In accordance with preferred implementations, the system is equipped with low consumption NID SLICs. During AC outputs

The CAO must line the central board

The NID is powered by the office, so it is important that (for example) the wiring board and the SLIC require only a small amount of power in the power failure mode.

The low power SLIC will use a hybrid transformer. Preferably, the entire low-power SLIC shuts down if the phone is picked up in the event of a power failure. For example, this mode will be triggered by a Hall effect device that will monitor the current in the loop and turn off most of the SLIC electronics when the current is zero.

V. PHO description of the fourth preferred implementation (Very compacted user equipment Figure 7 illustrates a preferred rea i 1 Z a c i of the invention , which finds a special application in velni, zhn š + .ěnýc h equipment . How are you shown in the figure, CO brings conv é η ί π i resources 01? t i c k é signals to ONU 708. In ONU, converts conver sounds for control E / 0 i.t | ) t. ί C R t? electrical signals., digital signal y. El and? k t r i 1? k is 11 i α i t.á I η í signals are transmitted using twisted WHOSE! dv oudrátů k ΓΙ β 'RlJ 1 1 rí Λ

(k 1 to 3 50, preferably more than 20) units which are described by a D / A conversion device. Thus, conventional analog signals are fed to the conventional analog subscriber device 22.

In accordance with one aspect of the invention, power is normally supplied to the ONU from a source 702 and power is supplied to the subscriber via a twisted pair wire.

ONU. ONU and energy source?

they are assembled in one or more tight boxes 70.4 • at the bottom of the re-installation implementation íkv nri 1 .eny eg on a telephone pole. Energy is supplied during an outage

1 ». > pa i en participatory equipment using metal

Η

9465 conductors 706. Because the distances are small in high-density oil deposits, large-sized conductors are not necessary;

Such devices will be particularly useful in density

40 / DNU.

The settlement of larger than 20 / ONU areas, which preferably have a larger chandelier than the mechanical arrangement of the preferred implementation, the device comes conventional 'The power supply line is connected to the AC / DC is located in close proximity. AC / DC different capacity but DC CDC source. AC / DC converter 708 and through ONU also connected to composite

Giant . 8 of the device 704. As shown, the power line 804 of the converter 802 that the converter will have. for each application it can be 40 Watts served during normal operation of the ONU by the subscriber device. The ONU is also an optical / copper cable 808, which includes, for example, 24 individual fibers and copper cables.

The ONU is connected to a copper terminal box 810, which may include, for example, about 50 thermal connectors described in the present invention. The lines are fed from the copper terminal box to the individual subscriber devices.

VI. Advanced applications

The above-mentioned connections are easily transferred to other advanced technologies and applications. For example, it will be possible to adapt to a TI transmission to a subscriber only a voiced electronic card. Similarly, other applications will be readily available. Figure 9 illustrates one such application that implements interactive home video.

As shown, the system includes a NID 901 that includes a line board 902 containing a D / A converter and other circuitry. mentioned above. Furthermore, a CATV amplifier is built into the NID; and forbidden electronics 904. The power supply for the circuit board is provided in accordance with the above-mentioned implementations, provided that during; In the event of a power failure, the CATV electronics remain without power. CATV; <? ' The throne will also be dysfunctional, and it will not cause much damage, because television broadcasts will also be dysfunctional at that time.

λ

T? · *! J

The wiring board is used to provide conventional telephone services to the subscriber device 22. The IJATV board is used to provide conventional cable television services for televisions / VCRs and other devices 906.

Other possibilities may be provided by a track ball or other user interface device 90b which is connected by a wire to the NID and to the IR transmitter 910. The IR transmitter is used to control devices such as VCRs by means well known to those skilled in the art. For example, a user can select a program to record from a list displayed on the TV screen. The IR transmitter then activates the VCR at the appropriate time. The track pack is preferably fixedly connected by jacks located adjacent to conventional telephone jacks. The track packet controls the cursor 912, which is displayed on the screen of the television 906. The cursor is generated on the screen by overlapping the signal on the CATV signal in the disabled electronics 904 in a manner well known to those skilled in the art.

For example, shopping from home will be done at night by moving the cursor around the screen and pressing the "select" button to identify the desired product. The CATV signal overlay contains sorting instructions and is generated in the direction of the telephone signals from the line board. This overlay allows user input to be received from the mouse. .Video, lira and the like can be generated with the foot in a similar manner using the system described above.

VII. T e s t o v a c ί n o ž n o s t. I

It will be important for telephone companies to be able to verify that the wire from the ONU to the NID, the NID unit, the transformer (if present) supplying direct current (DC) to the NID and the handset (if present) are working properly. In order to ensure such testing capabilities, it is preferred that the transformer be equipped with a switch that is closed when the transformer is connected to the mains. AC voltage is indicated by a test circuit built into the transformer. The collective information from N1.1) is transmitted to the non-switching panel in NIL) by means of a digital signal. For this operation, the energy accumulated in the capacity of the transmission of the part i is used

9465 DC (DO current from 00 to test circuit.

Within the NID, each board will preferably have its own test circuit. If OK, the corresponding signal will be transmitted to the ONU for further transmission. The twisted pair to the subscriber will be tested by sending the appropriate test signal to the NID, which introduces, shortens or cancels the lost wire service. A simple voltage and current test from the ONU can then be used to measure the state of the loop. Representative testing techniques are described in related patent specification serial number 504,235 and the present invention.

17,1990 related references

VIII. Packaging assembly and mechanical arrangement

Figure 10 illustrates the mechanical properties of a NID unit to be used by a subscriber in accordance with one preferred aspect of the invention. As shown, the container consists of a body 1002, preferably containing three compartments. The department includes an electronic device ^1004; a page accessible to the telephone company 1006 and a page accessible to the subscriber 1003. Details of various physical aspects of the box are described in the related patent specification serial number 534,325 filed in Septerabere with the present invention and previously provided for general use. The compartment 1003 preferably provides easy access to the subscriber, while the electronics department and the telephone company access department are provided, for example, with a lock. The electronics compartment is preferably provided with ventilation openings · 1010.

Inside the electronics compartment, there are several multi-pin connectors 1_Q.11. One of these multi-pin connectors is adapted for a board 1.012 containing primary electronic NID components such as a D / Λ converter. Another of the connectors is adapted for a board, such as a CATV 1014 board (in some implementations). Some plates may be provided with cooling fins 10_16.

In the department designated for the telephone company, there are several connectors for unconnected conductors 1013 intended for the connection of wires and conductors coming from the DNU. They may discover others

9465

- zll connections for connecting a CATV coaxial cable. Power is supplied by a source 1020, preferably provided with high-voltage protection. The department intended for the participant is equipped with test ports and the like. The cover or door 1022 covers the electrical components of the compartment, while the door covers the compartment intended for the telephone company and the compartment intended for the subscriber.

IX. Conclusion

The present invention describes a greatly improved telephone system. . .. The above description should also be lustrative. and no. restrictive. Many variations on this topic will occur to those skilled in the art upon reviewing this disclosure. The invention may, for example, include other specific circuits or some of which may provide some functions in software or hardware. In addition, although certain specific models are used in this specification, it is possible to use a large number of different components and methods without altering the spirit of the invention. The essence of the invention should therefore not be determined in the light of the above description, but in the light of the appended claims together with the whole class of their equivalents.

Claims (23)

1. A telecommunications equipment comprising: an optical fiber that is adapted to transmit digital signals representing telephone communications; optical network interface containing: i) an optical / electronic conversion device connected to said optical fiber; and (ii) nultiplexing / denultiplexing conversion equipment; a plurality of metallic conductors for transmitting digital signals from the multiplexing / denultiplexing device to a plurality of subscribers; and a network interface device located at the subscriber comprising: (i) a digital to analogue conversion device connected to: said metallic conductors; and ii) a ring generator for ringing the phones of said subscriber. v y z n a c u j i o 2. The telecommunications device of claim 1, wherein said optical network interface is located adjacent a curb adjacent to the dwelling. 3. The telecommunication device of claim 1, further comprising a power source for the NU connected to said optical interface, and separate subscriber sources reduced by non-generating rings. 4. The telecommunication device of claim 3, wherein said optical network interface source is more than 12,000 feet from said subscribers. 5. The telecommunication device of claim 4, wherein the wires connecting said optical network interface power supply supplying said optical network interface find average power. 16 to 22 uvg. _______ 1 ν ': HX' * ' 9465 6. The telecommunication device according to year 3, characterized in that said transformer converting a separate source of energy as well as energy is an AC / DC electrical socket at the subscriber to direct current (CDC). 7. The telecommunication apparatus of claim 3, further comprising low power phones, wherein said low power phones are adapted to ring even in the event of a power failure. 8. The telecommunication device of claim 7, wherein said low power phones are operatively connected to a battery during a power outage at a subscriber. 9. The telecommunications apparatus of claim 7, wherein said low power phones are operatively connected to said metallic conductors during a power outage, and wherein said metallic conductors supply said low power phones during power outage. 10. The telecommunication apparatus of claim 7, further comprising conventional telephones and devices for said subscriber at least to suppress the ringing of the bells of said conventional telephones during a power failure. 11 - The telecommunications apparatus according to claim 3, characterized in that it comprises a ringing ring, wherein said ringing cycle modification circuit is adapted to tip the cycle length. ringing the telephones of said subscriber during a power failure of said subscriber 12. The communications device of claim 3, wherein said optical interface is adapted to tone to supply power to said subscriber through said metal conductors during a power failure. 13. The telecommunication apparatus of claim 3, further comprising a storage capacitor, wherein said capacitor further comprises a storage capacitor. Charged in the event of a power failure at the cycle God 9465 ringtones at an established participant. 14. The telecommunication device of claim 12, wherein said storage capacitor is charged by current coming from metallic conductors from said optical interface. 15. The telecommunications equipment of claim 14; n. that said metal conductors are copper and find an average of 22 and 26 avg. 16. The telecommunications apparatus of claim 3, further comprising a low power bell, wherein said low power bell is adapted to tone during a power failure at the subscriber. 17- A network interface device to be installed at a subscriber comprising: analogue conversion for subscriber to telephones, characterized by a circuit of digital incoming digital signals analogue signals intended for transmission of a subscriber; a ringtone generator for ringing the phones of the aforesaid: account; and energy that delivers supply; ringing from said subscriber and from said subscriber electric power available · converting the line to the following: i? / 1 p3? i? I i str i buc 1 d o sounds gene h en lunge current when je li staika 18. The network interface device of claim 17, further comprising a circuit that modifies the duration of the active ring pattern of the phones at the time of the power failure of the subscriber. 19. The network interface device of claim IP, wherein said active ring-cycle length modifying circuit further comprises a voltage-controlled oscillator which voltage and shortens the active ring cycle length. when mentioned? the voltage drops below the selected value. Z 5 9465 20. A network device characterized by a capacitor being charged by an interface as claimed in claim 17 further comprising storing direct current (PC) flow from said lines arriving at the subscriber during a power outage and discharging a power failure. eη í. When you ring 1 ef onfl is no longer on 21. A network device characterized in that a transformer that supplies power for ringing said phones while it is available to said power subscriber. Claim 20 further comprising 2I The network interface device of claim 1, further comprising a filter that removes higher harmonics from the signal emitted by said ring generator at a time when said power subscriber is available, but not at a time of outages. current at said subscriber. 28. A method of supplying power to a subscriber A telephone system comprising an optical fiber comprising ^: supplying power to a ringing telephone of said subscriber from a source; power of said subscriber: and during a power failure, supplying power to the ringing phones of said subscriber obtained from a subscriber line connected to an optical network unit. · 24. The method of claim 2.3, said supply method comprising the step of alternately storing the line in storage capacities 25. The method of claim 23 wherein: óbs hu M from ringing k 11 o p.111 k veri | í. .and. OK .. ABOUT OS £ n a c u .mu.Ci S ř? t. í ΐ'ςτ i i? during vypad ku Π 3 p 3 . he he .3 Π i energ ie it sounds no no participation. ll and discharge en í grains! Joint ka pae him participating ka. OF n a č u r a c s 1.3 t? t- í η í higher c h bučeni:  k ý o h and age stmp í Neneh step ί In 3 lit? η i he X and 1 espon some 1 OO m ί n 26,9465 higher hamonic frequencies from said signal during the power failure step in the power supply step.