SK104594A3 - Telephone system - 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

Telecommunications equipment

Technical field

The present invention relates to telecommunications systems and to a method for their operation. In one embodiment of the invention, the transmission to the subscriber is performed, for example, by an improved telecommunications device comprising an optical fiber or other digital device. medium in combination with signal transmission over a metallic medium.

The current state of the art

Fiber optic telephone networks have become widespread in recent years. Optical devices have a number of advantages over devices using metal media, including a much wider bandwidth. Most subscriber devices in the telecommunications network in the US and elsewhere rely on metallic (usually copper) transmission media.

One important limitation in transmitting a telephone signal to a home in such hybrid systems is the need to power subscriber telephone equipment. Since optical fibers do not conduct electricity, it is clear that other devices must be used to transfer power to the central office and to the subscriber. The phon e phon e has been developed to transmit optical signals to a single location, such as a central office. Such signals are then converted into electronic signals for final transmission to the subscriber. These combined optical / electronic devices are commonly referred to as hybrid devices. This problem is a bit, more difficult, because the FCC requires the telephone company to provide enough power to ring the five stages and the phon e c tio n s. If the standard phones are ringing, they consume a lot of power when they ring. y m u s i m a n a v r h n u t o t o t a t o p a c a t.

The embodiment of the invention is illustrated in FIG. 1, such a device is commonly referred to as an optical fiber to the curb or FTTC radiation. As seen in the figure, the optical fiber 2 is used to communicate optical data signals with the optical network unit (ONU) 4. The DNU is located adjacent, near the subscriber location, and is referred to as a curb DNU

Optical / electronic (0 / E) conversion device? 6 converts the optical signals into a serial stream of electronic digital T 1 Nycha signal OVÚR ^- No en S C: HPR 'EPRE; nose to mu 11 ip I e; ·: plexing / demultiplexing device 8. Mul t ipexing / demult i plexing device? 8 converts serial data stream from 0 / Έ converter to. many digital signals. These digitally s? is not it? n é naana 1 ó gov é sien á 1 yvdigi t. á 1 no / analog, removed ócjava / di. digital converter, 10 (iCODEC) and transmitted to the subscriber equipment 12, what is? home or office, by means of one or more metal conductors.

Device? The network interface (NID) .18 in the subscriber provides protection against lightning and power failure. The NID is also the location to connect multiple subscriber devices 22 to the incoming twisted pair wire 14. Incoming twisted pair wires are often referred to by experts as "pendants".

Is the power supplied to several ONUs (and to several participants) from the source? energy? 16. The energy source 16 is? placed close to the ONU and serves a relatively small amount of ONU (10-14) so that the dimensions of the lead-in cable 16 are to an acceptable extent. The power source 16 serves primarily several ONUs within the space of several Square blocks. Four houses could use a peak of up to 20 watts, as required by five standard telephones for each house. power supply? Thus, long wires were often needed to the ONU, especially when the wires were too large. N o v i a c s a e S t e r e t o r e o t. 1 and energy, because the 20 Hz wave with a rectangular waveform could not? be used to ring bells. Higher harmonic waves with a rectangular waveform must be filtered off the supply line to be ringed by the phone, because, especially at long distances, call crossing would occur. Removing these higher harmonic waves increases energy consumption.

Subscriber facilities also require similar service, and in order to meet the regulatory requirement, it is necessary to supply power to the telephone equipment so that it works even in the event of a power outage that supplies power to a power source or a remote power supply (RF) 1A. Accordingly, it has been proposed to equip each ONU battery.

Although the apparatus of FIG. 1 has met with considerable success, it also has some limitations. For example, because the peak power of the phone is high, the power source must be of a reasonably large size and often must be located adjacent to the small size of the ONU supply. These facilities are so large that it is often necessary to buy space for the location of said energy source, and local residences often become the location of the energy source. Also, batteries are a source of difficulty, especially when placed in an external device. Other difficulties with such devices include short battery life, especially in high temperature packaging. Furthermore, since the energy and optical fibers come from separate sources, further adjustments are needed in order to improve the performance.

Another solution was proposed. For example, it has been proposed to supply optical fibers directly to a subscriber device and to introduce a 0 / E, NUX, and D / A device into each subscriber device. Such devices have a number of limitations, including:

(i) the requirement that the participant supplies energy;

2 / size efficiency limitation achieved

3 / concerns the reliability of reserve sources such as batteries when a normal power source is unavailable to a subscriber.

Other difficulties with such devices include short battery life and high cost because a laser is required for each participant. For the laser it is necessary to provide a strong source of energy as well as further storage of optical fibers en.

A further solution to the above problems has also been proposed. For example, it has been proposed to eliminate the power supply and to introduce extra metal conductors from the house to the ONU, through which the energy is supplied to the ONU. In such a solution, it has been proposed to provide a reserve power supply by means of batteries located in the subscriber device.

This system and other similar systems also suffer from a number of limitations. For example, when ONU provides services to four subscribers, will users quickly discover that they can disconnect their power supply? and the system will function normally, except for the account of 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 in a short time, but the telephone service may collapse for all four users. When only one in four users disconnects the power supply, the remaining users will also supply power to their neighbors' phones, which of course is unfair. is also unfair to subscribers who use their phones far less than their neighbors. Another limitation of the start of the disconnection when the E / 0 device is repaired and the like. The reserve resource limitation includes yet another? trouble

It is clear from the above that there is a need for improved hybrid telephone equipment.

P o d s tata n y n e s

Precedent control. In accordance with one aspect of the present invention, there is no control? hybrid in the sense that optical fibers deliver telephonic signals to the central device, but metallic conductors transmit telephone signals to the subscribers.

contains electronic. ONU is

In accordance with one aspect of the invention, a DNU is an arrangement that optically converts a signal into a multiplexing / demultiplexing apparatus located, for example, at a curb or on a telephone pole in the vicinity and serving several users. Digital signals are fed to a subscriber device (typically a home, office) from an ONU using metal leads, such as a conventional short circuit.

The subscriber device (e.g., NID) has a digital analog converter device and a ring generator.

During normal operation, power is supplied to the D / A converter device, to the ring generator and to the subscriber phones from a power source supplied to the subscriber, for example, by a transformer. In accordance with one specific aspect of the invention, power outages are backed up by supplying power to the ONU from a central office of the telephone company. This energy is supplied by metal conductors which are normally connected to the ONU and are normally connected to the ONU. The power supply to the ONU is extremely reliable because the central office will be equipped not only with a power supply for the company, but also with reserve generators, batteries and batteries, and so on. U u í v a t e ľ. e. e. e. e. e. e. The low-power phone operates in both modes: ringing and disconnected: in a power failure mode: the phone is powered on and off. The phonons are switched off during a power failure in accordance with an embodiment of the present invention.

In addition, a further specific aspect of the present invention is used not only to transmit digital signals from an ONU to a subscriber, but is also used for; power transmission is inevitably required to operate low-power phones during a power failure. Alternatively, a group of conductors can be added between the ONU and the subscriber.

Similar to the first embodiment, conventional telephones are disconnected during a power failure. Since the power required to ring low power phones is very small, small wires can be used between ONU and the subscriber for power purposes. In the course of normal ch i n i n i n i n i n e n i n i n i n i n i n e n i n i n e n i n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n e n 1 e f ó n o the power supplied from the transformers located at the subscriber i '. energy to ONU is supplied from CO. The large power 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.

In accordance with other aspects of the invention, the need to use low power phones is eliminated. In accordance with these aspects, the energy is also transferred from the CO to the subscriber during the outage. During a power failure, the ringing cycle of the phone is changed to reduce the ringing cycle. F're satisfying the energy requirements of the subscriber is used a spare capacitor. In accordance with the phppageampler, the 1 ring is changed if the user has more than one phone connected, how can the reserve be: apac .itor Different Real Estate? rgiezv 1 a day. Invention 1 cut! In addition to the calorific ch te zkuspotr ^- ebuenergie

V 2 d 1 Alena side, smaller Š i U. mi gráči U k T .t, w i r o k Jed n No. * real life not, Contents;.! .j ¹ optical field

, m e n i e b o e a l e o o c t e n e n e n e n e n e n i n i n i n i n i n i e n i n i n i n i n i s:

No batteries on ONUs and lightly threads into the house. t e 1 ef ón n e z ar i ad e .....

v 1 á k n o, p ri s p Ô s; o b e n e n e n e n e e r e e e. e n t u u c h t e 1 e f ó n u k. o m u n i k

c.iu, Device? It contains? also an optical interface with an optical / electronic conversion device connected to the optical fiber and a mul tipping / demult and a piex device connected to the optical / electronic device. From the multiplexing / demulsion pulses of which equipment leads to the subscriber? several metal conductors carrying digital signals. On the subscriber side, there is a N.ID network interface device having a digital / analog converter and a ring generator.

Better? understanding of the nature and advantages of the present invention can be realized with reference to the rest of the specification and with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a i 1ustuction zar Sorting, Fig. is a and 1 Fig. 3 Is a and 1 Fig. 4 is a i 1 loses or loses [0035] FIG. 5 .i 1 u strú j e? det

Fig

Another NID belonging to one or more of the inventions illustrates in more detail the ring generator associated with one embodiment of the invention,

Fig. 7 illustrates a highly densified embodiment of the invention,

Fig. S is an illustration? mechanical properties of one embodiment of the invention,

Fig. 9 illustrates a CAVT / FITL device; and

Fig. 10 .ilustruje? container.

F 'R e d s u s t c t e n e n i n y and y find. :

U15 SA H:

I. Terminology

11. F 'o p s i s e r i n i s (low pr icon phones)

111

IV. Description. of the third realization (for ringtone)

V. Description of the fourth realization (very dense user equipment)

VI. Advanced applications

VII. Testing options

VIII. Packaging assembly and mechanical arrangement

IX. conclusion

I.Term.i nol óq.i a

In the (falsified text) the following abbreviations are used with the following meanings:

CO - Central Office.

ONU - Optical network drive.

E / 0 - E1ectro / optic conversion device that includes a device for both conversions: electrical signals to optical and optical signals to electrical.

D / A - A digital / analogue conversion device which also includes a device for converting analog signals to digital signals and for converting digital signals into analog signals. Similarly, the pulsator / pulsator is normally bidirectional.

FITL - Fiber optic in loop.

FTTC - Optical fiber leading to curb.

MUX - Mul t iplexing / demult iplexing device.

REN - Ring equivalent number.

8LIC - Subscriber Loop Interface Circuit.

S e t i n i n e f e n e - A telephone that meets the requirements of the WEL500 family of devices that normally have a polling equivalent number of about 1.

Low Phone Icon - Phone, with a polling equivalent number of about .1 / 2 of the standard phone value, preferably ringing an equivalent number of less than 0.5, more preferably less than 0.1, and most preferably less than

- remote unit

2droja.

11 - Description of the first embodiment (Low Power Phones) □ br.2 illustrates a block diagram with aspects of one embodiment of the present invention. As can be seen, digital telephone signals are transmitted from CO 202 to ONU 4 by means of optical fiber 2 using a device known to those skilled in the art. Energy is transferred through metal conductors 204 from CO to DNU. In accordance? with one preferred embodiment of the invention, the CO power source and the wires between CO and ONU are designed to provide adequate power for CO connected ONUs, but not for subscriber circuits that will normally have? higher peak demands.

F're 00 is convenient not to supply power to generate a ringtone for a subscriber for all of his phones. Energy is supplied from the CO to the ONU during normal operation even in the event of a power failure. CO can supply power to ONUs during power outages using equipment well known to those skilled in the art, such as generators and batteries. Since the peak load of ONUs will be small (which even requires extensive supply of energy in the ebehucyk: 1 for the smell of conventional telephones), there is no need to use the C 0 and 0 NU conductors Γ kychrosme i- “ov or z oho o vacig? large capacity resources.

in one ONU, E / 0 conversion devices and multiplexing devices are connected to the output digital transmission signals at. conductors 14, which are conventional twisted wires that lead to subscriber 12.1 when shown in FIG. 2 shows only one line leading to the subscriber, it is obvious that multiple conductors can be used. The participant is? NID 20, which includes conventional lightning protection. The NID 20 also includes a D / A conversion device and a ring-generating device; of the type well known to those skilled in the art. From the NID, the analog signals lead to subscriber devices 22 which are normally standard telephone analogue machines.

Many of today's subscriber phones require a large number of calls. For example, ringing may require 3 - 4 Watts to ring 5 RENs, plus one Watt for? every other REN. P e s 1 u n e n e r g i a j c c d o v a n d o n o c t e c t s c t r o s t r o n o r o r m o. The telephones 22 are deactivated when a power failure is detected. In accordance with some embodiments, conventional telephones are disabled during a power failure. stream just so they don't hesitate but stay functional and can be used for everyday conversation.

Because? Ringer Generator delivers power to phones without lines leading to other subscribers, do not have to be higher harmonic frequencies? 20Hz ringtone filtered, or only some can be filtered. This will be acquired ener ^- giugener torazvoneniae s w t C? reduce.

In order to fully utilize telephones during a power failure, the subscriber is equipped with a low-power phone 210. Such telephones require only a small amount of power and are partially more efficient; in the sense that, during the cycle, the cycle; (e) less than 1 Watt, more preferably; less a k c; 0.3 to 0.5 Watt for the ring generator). For this reason, it is possible to satisfy all energy requirements during a power failure by using twisted wire at 14 ° C.

Because the energy demands of low-power phones are low and because? in the event of a power outage, essentially only low-power phones will be connected, the energy can come to the users through the drivers they lead to their homes. These wires will not be large in size between CO and ONU or between ONO and the subscriber because of the low power requirements.

In accordance with one variation of the system in FIG., The low power phone is replaced with a low power bell. In accordance with this embodiment, conventional telephones are still used for the conversation, but they will not ring during a power failure. Instead, users will be notified of an incoming call from the doorbell. In accordance with a preferred aspect of the invention, the package comprising the transformer is designed to include a low power bell, thereby minimizing the likelihood that the user will not ring the phone.

Said low power bells are powered, for example, by rotating the polarity of the DC voltage on the supply. A diode and a silencer or a time delay can be used to prevent the bell from ringing during normal uniform polarity or normal ringing. Alternatively, as a power source for the bell, an 800 to 1000 Hz signal is transmitted over the line. According to these embodiments, the bells would have a very high impedance for these high frequencies, but the speakers will sound at that frequency and.

III. Description of the second embodiment

In accordance with alternative embodiments, the energy supplied from the CO is not even in the event of a power failure, as shown in FIG. 3, in which like parts are indicated with the same references. The user is provided with a set of spare batteries of such capacity that they cannot be recharged. Since only low-power telephones can work, low-power phones are small, and the capacity of the batteries required by the user is very low.

As shown in FIG.

r ž a e v ρ ρ ti ti a a a a a a a a a a a a a a a a a a a a a a ený a skr a a a skr a a copper, 500 feet long, with a diameter of 22awq, with lightning protection circuits again. The wiring board 502 is provided with a ring generator 50A and a D / A converter 504. During normal operation, conventional telephones and wiring board are powered by an AC / DC converter 508, powered by the user's wiring. The converter 508 keeps the batteries 506 charged with the charger 508. During a power failure is? battery power 51 0 supplied from batteries. Table 1 illustrates the energy requirements of a typical four phone system as illustrated in FIG. 5th

Table 1

CALCULATING ENERGY VALUES

CEO Power Supply ............................ 48 Volts / DC

Resistor Resistance CEO 5000 ft Loop, 24 ga. ........... 270 Ohms

With one hanging phone:

Phone energy ....................

Power from AC / DC converter ..............

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

With one phone picked up:

Phone energy ....................

Energy from AC / DC converter. .............

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

Energy to DNU ...............................

Current to ONO ..................................

Energy and CO .................................

0,00 Watt 0,00 Watt 0,00 Watt

0.49 watts 0.65 watts 0.86 watts

1,800 Watts 0.052 Ampere in 2,494 Watts

EXAMPLE ^- iemern á é spotrebasyst muso 4 of that one o ef nmi

Battery Capacity / Phone at - 17 ° C Battery Capacity / Phone at + 20 ° C

2.59 Watts 5.18 WAtt

Compared with similar calculations for systems where ONU is equipped with batteries for supplying power to phones in an emergency in accordance with TA-NWT-00909, it appears that the required battery capacity is around 81 watts at 20 ° C. Even at - 17 ° C is the expected amount of energy to be supplied from the batteries of about 40 Watts. It is therefore clear that the arrangement with the local wiring board in accordance with the above embodiments is very desirable.

10, Description of a Third Embodiment (Variable Cyclic Variable) in accordance with one preferred aspect of the invention illustrated in FIG. 4, the device can only work with standard telephones. In accordance with this aspect of the invention, the DNU 4 is arranged in a manner similar to FIG. In normal operation, power to the ONU is supplied from a central location, such as CO, wherein the subscriber is powered from the subscriber by means of an AC / DC converter 208. During a power failure at the subscriber, power is supplied to the subscriber from CO, via the ONU. . This energy is complimentary ^- en Ä n and I & C in women characterized mdvojdr about .1 and 1 evre at 1 s perception of množst om. For the sophistication of m o o o m o o o er er gieni can wash the twisted wires, knowing c-? from C 0 to 0 NU re perceptions perceived dimensions.

The amount of energy that can be fed from ONU is low. e, e, e, e c t e e e e e f e e e, especially when some of them are attached to a participant. Accordingly, when a power failure is detected, what computer 402 is maintained during the power failure? n axis energy? with a twisted wire in a charged state. When the ring signal is detected in the MID, conventional phones are supplied with the energy required to charge the ring. stored in the capacitor. in a preferred embodiment, it is a capacitor with a capacity of between about 500 to about 1000 pF, and it will soon be possible to use a very wide range of values depending on the application.

Sufficient power can be provided during normal operation of the phone! energy for outage recharging capacitor for for normal energy requirements in suspended state by means of twisted wire coming into the apartment. Thus, it is possible to provide short peak energy peaks (about 0.15 to 0.5 Watts) for conventional telephone ringtones. At the same time, it is not necessary to install large size wires from the DNU to the subscriber. In addition, the customer's need is eliminated by eliminating the need to use batteries at the subscriber.

According to this embodiment, the line often cannot provide sufficient power if a large number of standard telephones are connected to the subscriber, even if the spare capacitor balances the power demand. Accordingly, in accordance with one preferred aspect of the invention, the ring 20 is modified with a ring-modifying circuit 404. According to this preferred embodiment of the invention, the device detects the occurrence of extremely high load (e.g. load greater than 0.75 Watts) during the ring cycle. If the load detected is greater than the selected value, the ringing length during the ringing cycle is modified by the ringing cycle modifying circuit. 404 by shortening the ring length, to a value that does not burden the capacitor 402. Thus, the active part of the ring generator ring is shortened,

In accordance with some embodiments, the ring-cycle circuit-modifying circuit reduces the ringing cycle with respect to the system load. Accordingly, during a power failure, the attendance15 will shorten the ring cycle time, but the phones will work from. view of the subscriber normally. Table 2 illustrates typical ring cycle times as a function of the number of phones connected for a typical system having a spare capacitor of 1000 pF.

Table 2

INTERVAL.Y SENSE CYCLE Number of three efon en owes 1 u. from von en i a 1 1.5 sec. rings 0.4 sec. n e of d out 5 0.8 sec. rings. 0.5 sec. does not ring □ br. 5 is? a more detailed block diagram, illustrating NID

in accordance with the embodiment of FIG. 4. As shown, twisted wires supply telephone signals together with direct current (CD) current coming primarily or exclusively for a power failure situation. Twisted wires enter the device through a hybrid or pulse transformer as well as a pulse transformer of one specific embodiment is the ZE-K 505/103 transformer from Siemens.

under normal conditions, 24 to / c

DC (DC current) using a rectifier connected to a twisted pair and supplying power from a 120 V AC power source. Adequate isolation is provided by Zener 506 diodes.

Power supply: 508 provides 5V power to the integrated circuits in the device, the 24V power supply being used to power the 506 ring generator. During the power failure of the subscriber, the DC (CD) current is fed through twisted wires to a subscriber who is; connected to the ring generator and voltage converter.

D i g i t e 1 e e t e s e n e n e n e n e n e n e n e s are read from the CEDOCs, three of which are shown for illustration at. Fig. 5, it being understood that depending on the number of lines the system will manage, a different amount of CODECs 51 < The CODECs 511 may be, for example, the MC 145505 from Motorola • each of the CODECs being to transmit (TR), receive (REC), clock (CLK), balance (BAL.), And permit (E), among other things. The primary purpose of these pins is to convert an incoming serial stream of data into one or more analog signals for use on subscriber lines.

The analogue transmitted signals are transmitted to and received from SLsICs 5.12, e.g. Tamura TTC-124 SLICs 512 other hard wires The wires have three wires.

CODEC activity is regulated by function generator 514. timing? the system is regulated by the synchronous pulse collection pin 516, which is used to derive the clock from the incoming clock data and control 518, what can? for example, the MP041 from CTS. The functional generator 514 may be implemented on an ASIC, such as a 170 gateway device from AST. Data channel 520 is used for? transmission of various data signals, warnings, test information and the like,

Ring relay 522 is used to generate ring signals for ringing? phones in the direction of the 506 ringer generator. the power supplied from twisted-pair wires, the active part of the generator ring cycle can be varied depending on the load on the line. For example, when connected to a large number of sound effects, the ring generator reduces the time during which the phones actually ring and / or increases, the break between each external. R e .1 é z o n e n e n e for our a f r e k e? n c i u s i g n o. 1 u v h o d e n e n e n e n e e e e e e e e.

Data is transmitted to and received from phones by a device using pulse code modulation (PCM) method

p.ing-pong, in accordance with a preferred embodiment of the invention. For example, the system may use a first slot for synchronization, a second, a third, and a fourth for outgoing data and leave the fifth slot blank. Longer three time periods can be used for; incoming data and (fa.l. other part for transmission of such data as hang-up, testing, etc.).

It will be apparent to those skilled in the art that the aforementioned device and circuitry is both illustrative and one of the many circuits that; is a? can be used in accordance with specific embodiments of the invention for impregnating NID. NID work can be controlled by a programmed microprocessor, or the entire circuit can be implemented using discrete logic.

FIG. 6 illustrates a ring generator 306 in accordance with the embodiment of FIG. 4 and 5. Energy is supplied to the ring generator via one of two possible routes. First, lines 602 extract power from lines, twisted wires, and are used in power outages at a subscriber. Second, lines 604 obtain power from the transformer, in the subscriber's room. In normal operation, if the phone is to ring, the relay connects the contacts to a 605 frequency such as 20 Hz to make the phones ring. Since energy is not a premium in normal operation, an RC 608 circuit may be used to remove the higher harmonics of the 20 Hz signal 615, resulting in a reduction in call interference between the lines when one line is ringing. Relays 607 are located in contact with the output lines. 611 to produce 20 Hz s i g n o i v n u.

In accordance with the realization described, the RC circuit is not connected when the phones are ringing during a power outage, as it eliminates the higher harmonic frequencies. v a e n e r q. i u v s s t e m e; This is done by connecting the contacts of the 20 Hz UU5 but with the RC circuit disconnected so that the terminals 610 are used for the output to the phones.

The ringing cycle is also modified in the event of a power failure. The voltage controlled oscillator (VCO) ά12 monitors the voltage on the conductor 615 and, depending on the voltage at this point, emits a rectangular wave with a long or short cycle of active ringing. The VCO output 612 controls the status controllers 1 of the electrical qui lectors 614 and during the power outage allowed by switch 609. The relay alternately connects the incoming DC to the reserve capacitor 616 or connects the reserve capacitor to relay 608. As the voltage detected by the VCO decreases, the relay decreases. the time of the capacitor output to the telephone line. For example, when 65 V is detected on a line, the phone will ring for 1.5 seconds. and the pause will be 4 seconds. The blast voltage on line 615 drops to 60 V, the ring time drops to 1.2 seconds, at 55 V it will be? 0.9 sec. and less than 55 volts in just 0.8 seconds.

It will be apparent to those skilled in the art that the aforementioned device and wiring is merely an external wiring that can be used in accordance with a specific embodiment of the invention. For example, the operation of the ring generator can? be controlled by an appropriately programmed microprocessor, or the entire circuit can be implemented using discrete logic.

In accordance with other embodiments of the invention, during a power failure, the power supply to the subscriber N.ID device is at different voltage levels. Is it consistent with these implementations? In the event of a power failure, the subscriber is powered first by a power source, e: e z a twisted pair of wires in the state? suspended and secondly, by a higher voltage source during the suspended condition. For example, the user can? be equipped with a 6 V, 10 mA power supply via a twisted-pair wire in the suspended state and in the event of a power failure, but with a 2.1 V power supply during the raised state when the power is switched off.

1?

As will be appreciated by those skilled in the art, the conversion of the above system to the TI system coming to the subscriber will be very easy to perform since the system is digital to NID. Such conversions will require the installation of new boards in the NID that are easy to install to the subscriber, without installing additional wires.

In accordance with the preferred realization, the system is equipped with low consumption NIC SLIC. During AC output time to the board, the wiring in the NID must be powered (for example) from the central office, so it is important that the wiring board and SLIC require only a small amount of power in power failure mode. A low power SLIC will use a hybrid transformer. The entire SLIC is switched off.

if the phone is at> low outage

This mode will start, for example

The Hall Effect, which will monitor the current in the s, the current will be zero, turns off most of the SLIC's electronics by power and

V, Description of the fourth implementation (Highly compressed user equipment)

Fig. 7 illustrates an embodiment of the invention which finds particular application in highly dense equipment. As shown in the figure, the CO feeds optical signals to the ONU 708 by conventional means. In the ONU, the conversion device E / 0 converts the optical signals into electrical, digital signals. E1 ek: tr ^- ic: digital 1 n signa l y s u s s u s u s u s u u u u u u u. thin wires to several (to 1 to 150, preferably to more than 20) units containing a D / A conversion device. Thus, conventional analog signals are supplied to the conventional analog subscriber device 22.

In accordance with one aspect of the invention, power is normally supplied to the ONU from power source 702, and power to the subscriber is supplied by twisted-pair ONU power. The ONU and the source of the g e are n ammon t o t e t i n e n o n t e n o n e n o n e n t. The housing 704, which in one embodiment is e.g. on the phone column. Power is supplied to the ONU and the subscriber equipment during a power failure by a metallic conductor 706. Because distances are small in areas of high population density, large-sized conductors are not required. Such devices are particularly useful in areas having a population density greater than 20 / 0NU and more preferably greater than 40 / 0NU.

Fig. 3 illustrates the mechanical arrangement of the preferred embodiment of the device 704. As shown, a conventional power supply line 304 arrives at the power supply line. The power supply line is connected to an AC / DC converter 302, which is located in close proximity. The AC / DC converter will have different capacities for each application, but may be a 40 Watt DC (CD) power supply, the AC / DC converter serving during normal operation of the ONU 703 and through the ONU also to subscriber devices. The ONU is connected to a fiber optic / copper cable 803 having, for example, 24 individual fibers and copper cables.

The ONU is connected to a copper terminal box

810 which can be connected to the heater, which can be connected to the heater. The invention described in this invention. The individual subscriber devices are provided with lines from a copper terminal box.

VI, Advanced Applications

The above connections are easily transferred to other advanced technologies and applications. For example, it will be possible to adapt to the TI transmission to the subscriber only by changing the electronic card. Other applications will be available in a similar way.

[0035] FIG. 9 i chandeliers i_3 e a p j. c i u, k t or a z avedi e i n t e r a k th e n o - soak v.i deo. Such as from the picture, system It contains NID 901 or é has board with leadership 9C \ 2 o b s a h u j D / A conversion from ar i aden i e a <í a 1 -

higher circuits mentioned above. In addition, the NID has a built-in CATV amplifier and forbidden electronics 904. Power supply for the wiring board is? secured in accordance with the above-mentioned implementations with the understanding that? during a power failure, the CATV electronics remain unpowered. CATV electronics will be broken, but it won't cause much trouble because the TVs will be at that time? also broken.

The CATV board serves to provide conventional cable television services to the subscriber equipment 22. The CATV board serves to provide conventional cable TV services to televisions / VCRs and to other equipment 906.

Other options may be provided by track baler or other user interface device 908 that is connected by a conductor to the NID and the l'R of the transmitter 910. The IR transmitter is used to control devices such as VCR by means well known to those skilled in the art. For example, a user can select a program to record from the list displayed on the TV screen. The IR transmitter then activates the VCR at the appropriate moment. The track package is firmly connected using jacks placed next to conventional phone jacks. Track Bal 1 controls the cursor 912 which is displayed on the TV screen 906. The cursor is generated on the screen by the first step of the screen. I e C A T V it is not .1 e k 't r o n i e? 904 in a manner well known to those skilled in the art.

For example, shopping from home can be done by moving the user around the screen and pressing the select button - this to identify the desired family. CATV translation The content of the CATV gear is shifted and generated in the direction? telephone signals from the wiring board. This overlap will allow user input to be received from the mouse. Similarly, video games and similar things can be generated using the above system.

well

VII. Testing options

Importantly, telephone companies will be able to verify that the driver from ONU to NID unit. The NID, the transformer (if present), supplying a uniform (DC) current to the NID, and the handset (if present) are operating correctly. In order to ensure such testing capabilities, it is preferred that the transformer be equipped with a switch that is on, who is it? mains transformer. The AC voltage is indicated by the test circuit built into the transformer. The status information from the NID is transmitted to the NID memory by a digital signal. For this operation, the energy accumulated in the capacitor or sending a portion of the DC current from the CO to the test circuit is applied.

Inside the NID, each board will have its own test circuit. Where is? OK, the appropriate signal for the next transmission will be transmitted to the ONU. The twisted pair will be tested to the subscriber by sending the appropriate test signal to the NID which will introduce, shorten or cancel the lost driver service. A simple ONU voltage and current test can be used to measure the loop condition. Representative testing techniques are described in the patent specification, serial number 584,235, related to the present invention.

V111._Mounting of packaging and mechanical arrangement.

Fig. 10 illustrates the mechanical properties of a NID unit that can be used by a subscriber in accordance with one preferred aspect of the invention. As shown, the box consists of a body .1002 which it contains? t r.i departments.

h u j e e e r e n e n e: a r i a d e n i e 1004, s t r a n u

The departments will be accessible to the telephone company .1006 and the party accessible to the subscriber 1008. The subsidiary is 1008. The patent specification, Serial Number 584,325 filed September 17, 1990, relating to the present invention, and previously provided with appropriate references for? everything community you need. The i008 department provides easy access to the subscriber, but the electronics department and the telephone company access department are equipped, for example, with a lock. The electronics department is equipped with 1 1010 ventilation holes.

A plurality of multi-pin connectors 1011 are disposed within the electronics compartment. One of these multi-pin connectors is adapted for a board 1012. containing primary electronic MID components, such as a D / A conversion device. Another one adapted for the board, e.g. board n e e t o r c h r- e a 1 i z. c i and ch). The cooling ribs can be 1010 cooling ribs.

In the department designated for the telephone company it is not possible to: CATV 1014 (equipped with several connectors for unconnected wires 1018, intended for connection of conductors coming from ONU. They may also appear even if several times .1 to .1 not to 1 for CA T V. 1020, equipped high-voltage protection-

next connections energy adds zdr n o u. 0 d dele n .i e u r no ports and so on. t r i c k e components designed for phone participating ka.

The cover or door 1022 covers the elekIX. conclusion

P roduct 1. The system is described. The above description should be three. 0 d b o n t: o v v t e o b 1 a s t n a p a d e? many people. c i n t a t o t o m. and other functions in software or hardware. in the description, certain specific large amounts of different components are used.

i 1ustr and t. ss, no res- i pri o n e description inventions ez can to contain ôže z ai network some

M a v i a c? v t o m t c; models, procedures may be used without changing the nature of the invention. Accordingly, the subject matter of the invention would be with respect to the above description, but

- 24 with regard to their class for the appended claims together with the equivalents.

cel ou

Claims (23)

1. A telecommunications equipment comprising: an optical fiber that is adapted to transmit digital signals representing telephone communications to an optical network interface, comprising: i / an optical / electronic conversion device connected to said optical fiber, aii / mul tip 1 e: · ovation / demul tip 1 ex ovation e converting from ar and am metal wires for transmitting digital s ig m e s to the ex ante / demultiating the plexing device and to many subscribers, and a network interface device located at the subscriber, comprising: i / a digital analog conversion device to said metal conductors; and ii / a subscriber ringing generator. connected phones 2. The telecommunications apparatus of claim 1, wherein said optical network interface is located adjacent the curb in the vicinity of the dwelling. 3. A telecommunication device according to claim 1, characterized in that it comprises an energy source for the DNU, which is connected to the power supply. e in u r o g e n g e n d e n e n e n e n e n e n e n e s The energy sources of each participant supplying e n g e n g e n g e n g e n e r t e n t e n e a n e. 4. The telecommunication apparatus of claim 3, wherein said optical network interface source is more than 12,000 feet from said source. 5. A telecommunication device according to claim 4, wherein the conductors which connect the optical network interface power supply supplying energy to said optical network interface have an average of 19 to 22 awq. 6. The telecommunications apparatus of claim 3, wherein:? said separate energy source? is an AC / DC transformer that transfers power from a subscriber to a direct current (DO). 7. A telecommunication device according to claim 3, characterized in that? includes low power phones where said low power phones are adapted to ring even in the event of a power failure. 8. A telecommunication device according to claim 7, characterized in that? low power phones are operatively connected to the u battery during a power failure. of claim 7 in a low-connected supply line 9. Telecommunication equipment according to the fact that the telephones during the power outage operatively to the driver and that? metal wires with low energy consumption during y and n are. to metal to power failure phones. 10. Telecommunication equipment? according to claim 7, characterized in that? does the subscriber contain conventional phones and equipment? at least to reduce it? ringing the bells of these conventional phones during a power failure, or. 11. A telecommunication apparatus according to claim 3, comprising a ring-ring device, wherein said ring-modifying circuit is adapted to modify the ring-ring length. telephones of said subscriber during a power outage: a. 12. A telecommunication device according to claim 3, wherein said optical interface is adapted to lead to power to said subscriber during said power failure by said metallic conductors. 13. The telecommunication apparatus of claim 3, comprising a spare capacitor that is charged and discharged during a ring cycle in the event of a power failure. that participant, 14. The telecommunication apparatus of claim 12, wherein said reserve capacitor is charged by current coming through metallic conductors from the optical interface. The telecommunication device according to claim. 14, characterized in that said metal conductors are copper and have an average of 22 and 26 awq. 16. The telecommunications apparatus of claim 3, comprising a low power bell that is adapted to ring at a subscriber during a power outage. 17. Network interface device intended to be installed at the subscriber? is characterized in that it contains: a digital / analog conversion circuitry for converting incoming digital signals into analog signals intended for transmission to a subscriber telephone by a .1 i n, e, e, e, e, e, e, e, e, e, e, e; a telephone ovci u c a s t n i k a, and a power distribution circuit that delivers the supply. In the event of a power failure at the subscriber and from the subscriber at a time when electricity is available at the subscriber, the subscriber and the subscriber will be able to operate the power supply. 13. The network interface device of claim 17. characterized in that it comprises a modifying circuit 1S modifying the length of the active ring pattern of phones at the time of power failure at the subscriber. 19. The network interface device of claim 1, wherein said active ring cycle length circuit further comprises a voltage-controlled oscillator that monitors the voltage and shortens the active ring cycle length when said voltage drops below a predetermined value. A network interface device according to claim 17, characterized in that? it contains a reserve capacitor that is charged by direct current (CD) current from the lines coming to the subscriber during a power outage and discharges when the phones are ringing during a power outage. 2f. The network interface device of claim 20 comprising a transformer that delivers power to ring said phones while power is available from the subscriber. 22. The network interface device of claim 17 comprising a higher harmonic frequency filter that removes higher harmonic frequencies from the signal emitted by the generator even when the power is available to the subscriber but not at the time of downtime: in the case of a participant. 23. Method of energy supply? to a subscriber in a telephone system comprising an optical fiber, comprising: supplying power to the ringing phones of the subscriber from the subscriber's power source; and during a power failure, the power supply to the subscriber's ringing phones obtained from the subscriber line connected to the optical network unit. A method according to claim 23, wherein: i - 27, characterized in that the procedure of supplying power during a power outage further comprises the step of alternately storing power from the subscriber line to the spare capacitor and discharging the capacitor when the telephone rings at the subscriber. 25. The method of claim 23. The following step includes the step of removing the higher harmonic frequencies from the signal during the power failure step during the power supply to the subscriber and not removing at least some of the higher harmonic frequencies from the signal. in the step of feeding the energy.