CN106027822A - System and method for allowing data, reverse power feed and voice to coexist in pair of telephone wires - Google Patents
System and method for allowing data, reverse power feed and voice to coexist in pair of telephone wires Download PDFInfo
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- CN106027822A CN106027822A CN201610316054.8A CN201610316054A CN106027822A CN 106027822 A CN106027822 A CN 106027822A CN 201610316054 A CN201610316054 A CN 201610316054A CN 106027822 A CN106027822 A CN 106027822A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
Abstract
The invention discloses a system and a method for allowing data, reverse power feed and voice to coexist in a pair of telephone wires, and relates to the field of communication. The system comprises a distribution point unit (DPU), customer premise equipment (CPE), power sourcing equipment (PSE) and at least one telephone adapter, wherein the DPU is connected to the Internet via an optical fiber, the DPU is connected to a public switched telephone network (PSTN) via a plain old telephone service (POTS) interface, the DPU is connected to a user home via the pair of telephone wires; the CPE, the PSE and the telephone adapter are all connected to the pair of telephone wires from the DPU to the user home; the CPE is connected to a PC or a home gateway of the user home via a data service interface; the PSE is connected with the electric supply of the user home via an electric supply interface; the telephone adapter is connected with a telephone in the user home via a telephone interface; and the telephone adapter is an active telephone adapter powered by the telephone wires. According to the system and method, the coexistence of reverse power feed and telephone voice services on the same pair of telephone wires can be achieved, and thus providing services for customers together with the data service.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of data, reverse feeding and voice altogether
It is stored in the system and method for pair of telephone lines.
Background technology
Along with broadband user is more and more higher to the requirement of access rate, FTTH (Fiber To The
Home, fiber to the home) quickly grow, but, higher network construction cost hinders fortune
Battalion business makes the overall arrangement for FTTH network, is primarily due to: for non-newly-built region, wearing of optical fiber
Register one's residence in hole and interior wiring is difficult to carry out；The one-tenth end of indoor optical fiber is installed needs professional skill, must
Professional must be sent to visit；Install, the human cost of surfaceman presents the normality risen year by year.
(Fiber To The Curb, Fiber To The Curb/FTTC), FTTDP to this end, FTTC
(Fiber To The Distribution Point, optical fiber is to distributing point) access way also occurs same
Walk flourish situation.
For FTTDP, can be divided into further FTTCabinet (Fiber To The Cabinet),
FTTBuilding (FTTB), FTTCurb (Fiber To The Curb).Apply at FTTDP
Time, generally intelligent acess signal is converted into DSL (Digital Subscriber Line, numeral
Subscribers' line), the equipment of G.fast (gigabit phone line technology) etc. be referred to as DPU (Distribution
Point Unit, distributing point unit), it is typically mounted at cross-connecting box, corridor, electric pole.
Typically will be connected with DPU in the family communicating, being positioned at client, in order to access user
The equipment of computer, mobile phone etc. is referred to as CPE, and (Customer Premise Equipment, client is eventually
End equipment).Carry out networking dispose time, due to DPU installation site power taking difficulty, generally by
Access position or CPE internal placement feeder equipment near user CPE at home, by CPE
It is powered to DPU equipment, i.e. RPF (Reverse Power Feed, reverse feeding).
Due to based on PSTN (Public Switched Telephone Network, public exchange
Telephone network) Plain Old Telephone Service have that user's use habit, business are stable, have a power failure after also
The advantage such as can work, and still has a large number of users to use Plain Old Telephone Service, is carrying out FTTDP
During transformation, it is also desirable to consider traditional landline telephone demand of these certain customers.
The spectral range that data service DSL and G.fast uses is 20KHz～106/212MHz,
For there being the data service of uplink and downlink simultaneously, DSL uses FDM (Frequency
Division Multiplexing, frequency division multiplex) solve the problem that up-downgoing coexists, G.fast
Use TDM (Time Division Multiplex, time division multiplex) solution up-downgoing to coexist to ask
Topic.
The spectral range that speech business uses is 20Hz～4KHz, and data service is in difference
Spectral range, coexist and do not result in problem.Additionally, speech business also needs to make electricity consumption
Words line is that phone is powered, ring, is detected the direct current signalings such as dislodging machine, root by electric current
According to telephone service state in which, voltage range is usually 10V～120V, and electric current is generally less than
Tens milliamperes, there is the AC compounent of about 25Hz in ring, and the direction of power supply is from DPU
To phone.
PoE (Power over Ethernet, POE) utilizes existing standard Ethernet to pass
Data and the standard criterion of electrical power is transmitted while transmission cable.IEEE 802.3af/at standard is
Standard based on POE PoE, when arranging feeder ear equipment PSE in one network
(Power Sourcing Equipment, power over Ethernet device) and receiving end equipment PD
Time (Powered Device, power receiving equipment), PoE POE work process is as follows:
(1) PD end equipment Inspection: at the beginning, PSE device exports the least voltage at port,
Until it detects the receiving end equipment that connection is a support PoE standard of cable terminations；
(2) PD end device class: after receiving end equipment PD being detected, PSE device
May classify for PD equipment, and assess the power needed for this PD equipment；
(3) power supply is started: in the starting period of a configurable time (generally less than 15 μ s)
In, PSE device starts to power to PD equipment from low-voltage, until providing the unidirectional current of 48V
Source；
(4) power supply: the unidirectional current of reliable and stable 48V is provided for PD equipment, meets PD
Equipment is not across the power of standard；
(5) power-off: if PD equipment disconnects from network, PSE will be (general rapidly
Within 300～400ms) stop powering for PD equipment, and duplicate detection process is with detection
Whether the terminal of cable connects PD equipment.
If from the foregoing, it will be observed that use PoE as reverse feeding scheme, DPU is carried out reversely
Feed, the voltage of powering phase is usually direct current about 48V, and the direction of power supply is that PSE arrives
DPU；Additionally, detecting, classifying, starting to deposit between power-down phase, PSE to DPU
At direct current channel.Differ in the current supply circuit of this direct current channel and the current supply circuit direction of voice
The signal definition of sample, reverse feeding and voice is different, in the case of having reverse feeding, it is impossible to
Carrying out traditional voice service, therefore, reverse feeding and voice can not directly coexist in a pair electricity
On words line.
Summary of the invention
The invention aims to overcome the deficiency of above-mentioned background technology, it is provided that a kind of data,
Reverse feeding and voice coexist in the system and method for pair of telephone lines, it is possible to realize reverse feeding
Coexist in same pair of telephone lines with telephone voice traffic, thus be client together with data service
Offer business, it is adaptable to need on that is 2 copper cash of 1 pair of telephone wire simultaneously Develop Data business,
The FTTDP device systems of reverse feeding and the scene of speech business, especially DSL/G.fast
Networking, facilitate the service deployment of FTTDP.
What the present invention provided that a kind of data, reverse feeding and voice coexist in pair of telephone lines is
System, this system includes distributing point cells D PU, customer terminal equipment CPE, POE
Equipment PSE and at least one telephone adapter, DPU passes through intelligent acess Internet, DPU
Accessing PSTN network by simulation telephone service POTS interface, DPU passes through pair of telephone lines
Receive user house；Described CPE, PSE, telephone adapter all receive DPU to user family
In pair of telephone lines；CPE connects PC or the home network of user family by data traffic interfaces
Close；PSE connects the civil power of user family by commercial power interface；Telephone adapter passes through telephony interface
Connect the phone of user family；Telephone adapter is the active telephone adapter from telephone wire power taking.
On the basis of technique scheme, described DPU includes the first data processing list
Unit, the first power supply, PoE/PD circuit, the first relay, the first low-power logic process single
Unit, first signal produce testing circuit, the second relay, FXO FXO interface,
First voice coupling circuit, the first data processing unit is connected with optical fiber, the first data industry
Business processing unit, PoE/PD circuit, the first low-power logic processing unit all with the first power supply
Being connected, the first low-power logic processing unit produces inspection with the first relay, the first signal respectively
Slowdown monitoring circuit, the second relay, FXO interface are connected, the second relay and the coupling of the first voice
Circuit in parallel, the first relay, first signal produce testing circuit, the second relay, first
Voice coupling circuit is all connected to DPU to the pair of telephone lines of user family, the first voice coupling
Conjunction circuit, the second relay, FXO interface are also connected with POTS interface.
On the basis of technique scheme, described CPE includes the second data processing list
Unit, one end of the second data processing unit is connected with data traffic interfaces, and the other end connects
On to DPU to the pair of telephone lines of user family.
On the basis of technique scheme, described PSE includes second source, PoE/PSE
Circuit, the 3rd relay, the second low-power logic processing unit, secondary signal produce detection electricity
Road, voltage detecting circuit, one end of second source is connected with commercial power interface, the other end with
PoE/PSE circuit is connected, and PoE/PSE circuit and the 3rd relay are connected, and the second low-power consumption is patrolled
Collect processing unit and produce testing circuit, voltage detecting electricity respectively with the 3rd relay, secondary signal
Road is connected, and the 3rd relay, secondary signal produce testing circuit, voltage detecting circuit is all connected with
On to DPU to the pair of telephone lines of user family, voltage detecting circuit is used for detecting DPU to using
Whether DC voltage is had in the pair of telephone lines of family man.
On the basis of technique scheme, described telephone adapter includes that the 3rd low-power consumption is patrolled
Volume processing unit, power supply obtain circuit, the 3rd signal produces testing circuit, the 4th relay,
FXS interface, second voice coupling circuit, the 3rd low-power logic processing unit respectively with power supply
Obtain circuit, the 3rd signal produces testing circuit, the 4th relay, Foreign eX-change Subscriber FXS
Interface is connected, the second voice coupling circuit and the 4th relay parallel connection, FXS interface, the 4th continues
Electrical equipment, the second voice coupling circuit are all connected with telephony interface, and power supply obtains circuit, the 3rd letter
Number produce testing circuit, the 4th relay, second voice coupling circuit be all connected to DPU extremely
In the pair of telephone lines of user family, power supply obtains circuit for a pair of DPU to user family
Obtain power supply on telephone wire, be operated for telephone adapter.
On the basis of technique scheme, described first relay, the second relay,
Three relays, the 4th relay are low-power consumption mechanical relay or light coupling relay, wherein,
First relay is closed type relay, the second relay, the 3rd relay, the 4th relay
It is normal-open type relay.
On the basis of technique scheme, described first voice coupling circuit, the second voice
Coupling circuit is that voice couples low pass circuit, for isolated DC and couple low frequency voice signal,
Isolate high-frequency signal, it is to avoid data service is produced impact simultaneously.
On the basis of technique scheme, described first low-power logic processing unit,
Two low-power logic processing units, the 3rd low-power logic processing unit are low-power consumption microcontroller list
Unit MCU, low-power consumption on-site programmable gate array FPGA, low-power consumption complex programmable logic
Any one in device CPLD, low-power consumption application-specific integrated circuit ASIC.
On the basis of technique scheme, described first low-power logic processing unit,
Two low-power logic processing units, the 3rd low-power logic processing unit are low-power consumption microcontroller
Unit MCU.
The present invention also provides for a kind of data based on said system, reverse feeding and voice and coexists in
The method of pair of telephone lines, comprises the following steps:
A, user side do not have PSE to power, and DPU powers in off-position, data, voice,
Reverse feeding is started working；
When B, data, voice, reverse feeding start to work simultaneously, speech business is as called
Call flow as follows:
Before starting working, second relay of DPU is off, POTS interface and
DPU disconnects to direct current signaling passage between the pair of telephone lines of user family, voice call signal
AC coupled is carried out by the first voice coupling circuit；
When after the telephone set off-hook being connected on telephony interface；3rd low-power consumption of telephone adapter
The software of MCU detects off-hook by FXS interface；Triggered by off-hook event, the 3rd low merit
Consumption MCU produces testing circuit by the 3rd signal and sends out " off hook signal "；This signal is by electricity
Words adapter is sent out by the pair of telephone lines of DPU to user family, is connected to DPU extremely
Each equipment in the pair of telephone lines of user family receives this signal, DPU also from DPU to
Receiving this signal in the pair of telephone lines of family man, the i.e. first low-power consumption MCU passes through the first signal
Produce testing circuit and receive " off hook signal "；Triggered by off-hook event, the first low-power consumption MCU
Simulation off-hook action is sent by FXO interface；So that closing of the circuit, before completing call
Direct current signaling process；
During call, voice call signal is coupled by the first voice from POTS interface
Circuit, the pair of telephone lines of DPU to user family, the second voice coupling circuit, finally by electricity
Words interface receives phone.
On the basis of technique scheme, in step A, DPU powers in off-position
Process is as follows:
Step 101, under the off-position not having PSE to power, open PSE power supply, PSE
Powering on, the second source in PSE powers to the second low-power consumption MCU；Second low-power consumption MCU
Start, initialize；
Step 102, the second low-power consumption MCU detect DPU to user by voltage detecting circuit
Whether there is voltage in the pair of telephone lines of family, if there being voltage, illustrating to be in phone escape state,
Forward step 103 to；If no-voltage, forward step 105 to；
Step 103, the second low-power consumption MCU of PSE produce testing circuit by secondary signal
Sending out " PoE prepares power supply signal " to the first low-power consumption MCU of DPU, the first of DPU is low
After power consumption MCU receives " PoE prepares power supply signal " by the first signal generation testing circuit,
First inquiry phone escape state, if being in talking state, will wait；If being in phone to escape
Raw non-talking state, the first low-power consumption MCU of DPU control the second relay disconnect, first
Relay turns on, so that PSE makes DPU to the pair of telephone lines of user family by twisted-pair feeder
And form path between the PD within DPU, forward step 104 to；
Step 104, the first low-power consumption MCU of DPU produce testing circuit by the first signal
Generate " by electricity standby ready signal ", due to electric by a pair of DPU to user family by twisted-pair feeder
Words line connects together, and telephone adapter and PSE can receive " by electricity standby ready signal ":
3rd low-power consumption MCU of telephone adapter produces testing circuit by the 3rd signal and receives
" by electricity standby ready signal ", if the 3rd low-power consumption MCU obtains power supply, the 3rd is low
Power consumption MCU controls the 4th relay and disconnects；If the 3rd low-power consumption MCU does not obtain electricity
Source, i.e. telephone adapter no-voltage, the 4th relay is normal-open type relay, is disconnected DPU
DC channel between the pair of telephone lines and telephone set of user family；
The second low-power consumption MCU of PSE produces testing circuit by secondary signal and receives " by electricity
Standby ready signal " after, immediately enter step 102 and detect DPU to a pair of user family electricity
Voltage on words line；Without receiving " by electricity standby ready signal ", carry out certain prolonging
Step 102 is returned again to time after；
If step 105 detect DPU to the pair of telephone lines of user family no-voltage, say
Open-wire line road can feed, and now, the second low-power consumption MCU of PSE controls the 3rd relay
Device turns on, by DPU to user family between such PoE/PSE circuit and PoE/PD circuit
Pair of telephone lines constitute path, thus start POE flow process, last PoE/PSE
Circuit starts to PoE/PD line feed, and PoE/PD circuit is in the case of the most powered
The first power supply within DPU is powered, the first power supply be the first data processing unit,
One low-power consumption MCU powers, and data, voice, reverse feeding start to work simultaneously.
On the basis of technique scheme, in step 101, described in do not have PSE to power
Off-position has two kinds of situations: a kind of situation is: do not meet PSTN on POTS interface, whole
Individual DPU is in complete power-down state；Another kind of situation is: be connected to PSTN on POTS interface,
First low-power consumption MCU is in low power consumpting state.
On the basis of technique scheme, in step B, when starting on POTS interface
During PSTN incoming call；Bell signal is had on POTS interface；FXO interface detects ring action,
So that the Programmable detection in the first low-power consumption MCU is to ring logic event, in this ring thing
Under the triggering of part, the program of the first low-power consumption MCU produces testing circuit by the first signal and sends out
" bell signal ", this signal is sent out by pair of telephone lines by DPU, is connected to
DPU receives this signal to each equipment in the pair of telephone lines of user family, and at this moment phone is fitted
3rd low-power consumption MCU of orchestration produces testing circuit by the 3rd signal and receives " ring letter
Number "；Then the internal processes of the 3rd low-power consumption MCU is produced by telephony hardware FXS interface
Ring action；So that there is ring in the phone being connected on telephony interface.
On the basis of technique scheme, in step B, at data, voice, reversely present
When electricity works simultaneously, if it occur that the commercial power interface power-off of power-off event, i.e. user, cause
PoE/PSE circuit is not owing to having power supply to make its power down not work, and then DPU is to user family
Reverse feeding RPF voltage is not just had in pair of telephone lines；Due to DPU to user family a pair
Not having voltage on telephone wire, DPU upper PoE/PD circuit does not just have power supply, the first of DPU
Power supply give the first data processing unit and the power failure of the first low-power consumption MCU, first
Data processing unit cannot work, and stops service；But the first low-power consumption MCU is come
Say, it detects that during PoE/PD circuit unpowered, automatically switch to FXO interface and power.
On the basis of technique scheme, described first low-power consumption MCU is detecting
During PoE/PD circuit unpowered, also can control the second relay conducting, the first relay disconnects,
Making PSTN feed arrival DPU to the pair of telephone lines of user family, the first relay disconnects,
Avoiding PSTN feed to arrive PoE/PD circuit power consumption by relay causes mis-hanging-on abnormal；
Then, the first low-power consumption MCU of DPU sends out " disconnected by the first signal generation testing circuit timing
Electricity escape signal "；3rd low-power consumption MCU of telephone adapter produces inspection by the 3rd signal
After slowdown monitoring circuit receives " power-off survival signal ", the 3rd low-power consumption MCU keep controlling the 4th
Relay turns on；Phone is in power-off survival state, and now power supply obtains circuit not to FXS
Interface is powered.
Compared with prior art, advantages of the present invention is as follows:
The present invention is capable of reverse feeding and telephone voice traffic and is total in same pair of telephone lines
Deposit, thus provide business for client together with data service, it is adaptable to need at 1 pair of telephone wire
Develop Data business, reverse feeding and the scene of speech business while of on i.e. 2 copper cash, especially
It is the networking of the FTTDP device systems of DSL/G.fast, facilitates the service deployment of FTTDP.
Accompanying drawing explanation
Fig. 1 is that data in the embodiment of the present invention, reverse feeding and voice coexist in pair of telephone lines
Systematic difference scene schematic diagram.
Fig. 2 is that data in the embodiment of the present invention, reverse feeding and voice coexist in pair of telephone lines
The structured flowchart of system.
Fig. 3 is that in the embodiment of the present invention, user side does not has PSE to power, and DPU is in off-position
The flow chart powered on.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of data, reverse feeding and voice altogether
Being stored in the system of pair of telephone lines, this system includes DPU (distributing point unit), CPE (visitor
Family terminal unit), PSE (power over Ethernet device) and at least one telephone adapter, ginseng
As shown in Figure 2, DPU passes through POTS (Plain Old by intelligent acess Internet, DPU
Telephone Service, simulates telephone service) interface access PSTN network, DPU passes through
A pair (i.e. 2) telephone line is to user family；CPE, PSE, telephone adapter are all received
DPU is on a pair (i.e. 2) telephone wire of user family；CPE passes through data traffic interfaces
Connecting PC or the home gateway of user family, data traffic interfaces is generally ethernet lan
(Local Area Network, LAN)；PSE connects the city of user family by commercial power interface
Electricity；Telephone adapter is the active telephone adapter from telephone wire power taking；Telephone adapter passes through
Telephony interface connects the phone of user family, and telephone adapter can have multiple, it is achieved many phones are also
Dynamo-electric words.
Shown in Figure 2, DPU include the first data processing unit, the first power supply,
PoE/PD circuit, the first relay, the first low-power logic processing unit, the first signal produce
Biopsy slowdown monitoring circuit, the second relay, FXO (Foreign eXchange Office, outside exchange
Office) interface, first voice coupling circuit, the first data processing unit is connected with optical fiber,
First data processing unit, PoE/PD circuit, the first low-power logic processing unit are equal
Be connected with the first power supply, the first low-power logic processing unit respectively with the first relay, first
Signal produces testing circuit, the second relay, FXO interface are connected, the second relay and the
One voice coupling circuit in parallel, the first relay, the first signal produce testing circuit, second continue
Electrical equipment, the first voice coupling circuit are all connected to DPU to the pair of telephone lines of user family,
First voice coupling circuit, the second relay, FXO interface are also connected with POTS interface.
Shown in Figure 2, CPE includes the second data processing unit, the second data service
One end of processing unit is connected with data traffic interfaces, and the other end is connected to DPU to user family
Pair of telephone lines on.
Shown in Figure 2, PSE include second source, PoE/PSE circuit, the 3rd relay,
Second low-power logic processing unit, secondary signal produce testing circuit, voltage detecting circuit,
One end of second source is connected with commercial power interface, and the other end is connected with PoE/PSE circuit,
PoE/PSE circuit and the 3rd relay are connected, and the second low-power logic processing unit is respectively with the
Three relays, secondary signal produce testing circuit, voltage detecting circuit is connected, the 3rd relay,
Secondary signal produces testing circuit, voltage detecting circuit is all connected to DPU to the one of user family
To on telephone wire, voltage detecting circuit is for detecting DPU to the pair of telephone lines of user family
Whether there is DC voltage.
Shown in Figure 2, telephone adapter includes the 3rd low-power logic processing unit, power supply
Obtain circuit, the 3rd signal produces testing circuit, the 4th relay, FXS interface, the second language
Sound coupling circuit, the 3rd low-power logic processing unit obtains circuit, the 3rd letter respectively with power supply
Number produce testing circuit, the 4th relay, FXS (Foreign eXchange Subscriber,
Foreign eX-change Subscriber) interface is connected, the second voice coupling circuit and the 4th relay parallel connection, FXS
Interface, the 4th relay, the second voice coupling circuit are all connected with telephony interface, and power supply obtains
Circuit, the 3rd signal generation testing circuit, the 4th relay, the second voice coupling circuit all connect
Receive DPU to the pair of telephone lines of user family, power supply obtain circuit at DPU to using
Obtain power supply in the pair of telephone lines of family man, be operated for telephone adapter.
First signal produces testing circuit, secondary signal produces testing circuit, the 3rd signal produces
Testing circuit is used to produce and detection signal, and signal can be (being less than in voice band
4KHz), it is also possible to be (more than the 4KHz, such as 51KHz or 21KHz) outside voice band.
First relay, the second relay, the 3rd relay, the 4th relay are low-power consumption machine
Tool relay or light coupling relay, wherein, the first relay is closed type relay, second
Relay, the 3rd relay, the 4th relay are normal-open type relay.
First voice coupling circuit, the second voice coupling circuit are that voice couples low pass circuit, use
In isolated DC and couple low frequency voice signal, isolate high-frequency signal, it is to avoid to data industry simultaneously
Business produces impact.
PoE/PSE circuit uses the PSE power supply circuits of ripe PoE standard, has been used for
The feed of PoE standard, and detect, classify, start and power-off.Owing to telephone wire only has 2
Root, compared with many with the Ethernet situations that line is parallel, feed current is little, the maximum born
Electric current can limit protection by the configuration of PoE/PSE circuit.
PoE/PD circuit uses the PD parasite power supplier of ripe PoE standard, has been used for PoE
Standard by electricity, and coordinate PSE to complete to detect, classify, start and power-off.
Shown in Figure 2, the first low-power logic processing unit, the second low-power logic process
Unit, the 3rd low-power logic processing unit are used to process logic, are specifically as follows low-power consumption
MCU (Micro Control Unit, micro-control unit), low-power consumption FPGA (Field
Programmable Gate Array, field programmable gate array), Low power CPLD
(Complex Programmable Logic Device, CPLD), low merit
In consumption ASIC (Application Specific Integrated Circuit, special IC)
Any one.It is described in detail as a example by low-power consumption MCU below.
FXO interface termination junction line, the direct current signaling such as including ring detection, simulation dislodging machine,
Additionally, FXO mouth also obtains a small amount of electric current from circuit, at a pair electricity of DPU to user family
The first low-power consumption MCU work is supported in the case of there is no reverse feeding on words line；FXS interface
Including ring, dislodging machine testing, phone feed etc..
The embodiment of the present invention provides a kind of data, reverse feeding and voice to coexist in pair of telephone lines
Method, comprise the following steps:
A, shown in Figure 3, user side does not has PSE to power, and DPU is in off-position
Electricity, data, voice, reverse feeding are started working；
In step A, the process that DPU powers in off-position is as follows:
Step 101, the off-position not having PSE to power have two kinds of situations: a kind of situation is:
Do not meet PSTN, whole DPU on POTS interface and be in complete power-down state；Another kind of feelings
Condition is: be connected to PSTN on POTS interface, and the first low-power consumption MCU is in low power consumpting state；
Under the off-position not having PSE to power, opening PSE power supply, PSE powers on, PSE
Interior second source powers to the second low-power consumption MCU；Second low-power consumption MCU starts, and enters
Row initializes；
Step 102, the second low-power consumption MCU detect DPU to user by voltage detecting circuit
Whether there is voltage in the pair of telephone lines of family, if there being voltage, illustrating to be in phone escape state,
Forward step 103 to；If no-voltage, forward step 105 to；
Step 103, the second low-power consumption MCU of PSE produce testing circuit by secondary signal
Sending out " PoE prepares power supply signal " to the first low-power consumption MCU of DPU, the first of DPU is low
After power consumption MCU receives " PoE prepares power supply signal " by the first signal generation testing circuit,
First inquiry phone escape state, if being in talking state, will wait；If being in phone to escape
Raw non-talking state, the first low-power consumption MCU of DPU control the second relay disconnect, first
Relay turns on, so that PSE makes DPU to the pair of telephone lines of user family by twisted-pair feeder
And form path between the PD within DPU, forward step 104 to；
Step 104, the first low-power consumption MCU of DPU produce testing circuit by the first signal
Generate " by electricity standby ready signal ", due to electric by a pair of DPU to user family by twisted-pair feeder
Words line connects together, and telephone adapter and PSE can receive " by electricity standby ready signal ":
3rd low-power consumption MCU of telephone adapter produces testing circuit by the 3rd signal and receives
" by electricity standby ready signal ", if the 3rd low-power consumption MCU obtains power supply, the 3rd is low
Power consumption MCU controls the 4th relay and disconnects；If the 3rd low-power consumption MCU does not obtain electricity
Source, i.e. telephone adapter no-voltage, owing to the 4th relay is normal-open type relay, also can be
Disconnect, thus be disconnected straight between the pair of telephone lines and telephone set of user family of DPU
Circulation flow path；
The second low-power consumption MCU of PSE produces testing circuit by secondary signal and receives " by electricity
Standby ready signal " after, immediately enter step 102 and detect DPU to a pair of user family electricity
Voltage on words line；Without receiving " by electricity standby ready signal ", carry out certain prolonging
Step 102 is returned again to time after；
If step 105 detect DPU to the pair of telephone lines of user family no-voltage, say
Open-wire line road can feed, and now, the second low-power consumption MCU of PSE controls the 3rd relay
Device turns on, by DPU to user family between such PoE/PSE circuit and PoE/PD circuit
Pair of telephone lines constitute path, thus start POE flow process, including PoE
Current detecting, classification, voltage supply flow process, last PoE/PSE circuit starts to PoE/PD
Line feed, PoE/PD circuit is the first power supply within DPU in the case of the most powered
Power supply, the first power supply is that the first data processing unit, the first low-power consumption MCU power,
Data, voice, reverse feeding start to work simultaneously.
When B, data, voice, reverse feeding start to work simultaneously, speech business is as called
Call flow as follows:
Before starting working, the flow process that powers on as shown in Figure 3, second relay of DPU is in
Off-state, POTS interface and DPU are to direct current signaling between the pair of telephone lines of user family
Passage disconnects, but voice call signal can carry out exchanging coupling by the first voice coupling circuit
Close.Such as when starting PSTN incoming call on POTS interface；Ring is had to believe on POTS interface
Number；FXO interface (hardware) detects ring action, so that in the first low-power consumption MCU
Programmable detection to ring logic event, under the triggering of this ring event, the first low-power consumption
The program of MCU by first signal produce testing circuit send out " bell signal ", this signal by
DPU is sent out by pair of telephone lines, is connected to DPU to the pair of telephone lines of user family
On each equipment can receive this signal, at this moment the 3rd low-power consumption MCU of telephone adapter
Produce testing circuit by the 3rd signal and receive " bell signal "；Then the 3rd low-power consumption MCU
Internal processes by telephony hardware FXS interface produce ring action；So that being connected on phone
There is ring in phone on interface.
After the telephone set being connected on telephony interface has carried out off-hook action；The of telephone adapter
The software of three low-power consumption MCU detects off-hook by FXS interface；Thus off-hook event triggers,
3rd low-power consumption MCU produces testing circuit by the 3rd signal and sends out " off hook signal "；This
Signal is sent out by the pair of telephone lines of DPU to user family by telephone adapter, connects
Each equipment on to DPU to the pair of telephone lines of user family can also receive this signal,
DPU also receives this signal, the i.e. first low-power consumption from the pair of telephone lines of DPU to user family
MCU produces testing circuit by the first signal and receives " off hook signal "；Thus off-hook event is touched
Sending out, the first low-power consumption MCU sends simulation off-hook action by FXO interface；So that it is electric
Words are connected, and complete the direct current signaling process before call.During call, voice call
Signal couples a pair electricity of circuit, DPU to user family from POTS interface by the first voice
Words line, the second voice coupling circuit, finally received phone by telephony interface.The rest may be inferred, makees
Similar for other call flow such as callers.
The workflow of power-off survival is as follows:
In step B, when data, voice, reverse feeding work simultaneously, if it occur that stop
The commercial power interface power-off of electricity event, i.e. user, can cause PoE/PSE circuit owing to not having electricity
Source makes its power down not work, and then DPU is to the most reverse in the pair of telephone lines of user family
Feed RPF voltage；Owing to there is no voltage, DPU in the pair of telephone lines of DPU to user family
Upper PoE/PD circuit is the most just without power supply, and then first power supply of DPU is to the first number
According to Service Processing Unit and the power failure of the first low-power consumption MCU, the first data processing
Unit the most just cannot work, and stops service；But for the first low-power consumption MCU, it
When PoE/PD circuit unpowered being detected, FXO interface can be automatically switched to and power.
First low-power consumption MCU, when PoE/PD circuit unpowered being detected, also can control
Two relay conductings, the first relay disconnect, in that case, it is possible to make PSTN feed
Arrive DPU to disconnect to the pair of telephone lines of user family, the first relay, PSTN can be avoided
Feed and arrive PoE/PD circuit power consumption by relay, produce larger current, cause mis-hanging-on
Abnormal；Then, the first low-power consumption MCU of DPU is fixed by the first signal generation testing circuit
Time send out " power-off survival signal "；3rd low-power consumption MCU of telephone adapter is by the 3rd letter
Number produce after testing circuit receives " power-off survival signal ", the 3rd low-power consumption MCU keep
Control the 4th relay conducting；Phone is in power-off survival state, and now power supply obtains circuit not
Power to FXS interface.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if
If these amendment and modification within the scope of the claims in the present invention and equivalent technologies thereof, then this
A little amendments and modification are also within protection scope of the present invention.
The prior art that the content not described in detail in description is known to the skilled person.
Claims (15)
1. data, reverse feeding and voice coexist in a system for pair of telephone lines, and this is
System includes distributing point cells D PU, customer terminal equipment CPE, power over Ethernet device PSE
With at least one telephone adapter, DPU passes through simulation by intelligent acess Internet, DPU
Telephone service POTS interface accesses PSTN network, and DPU receives user by pair of telephone lines
Family；It is characterized in that: described CPE, PSE, telephone adapter all receive DPU to user
In the pair of telephone lines of family；CPE connects PC or the family of user family by data traffic interfaces
Front yard gateway；PSE connects the civil power of user family by commercial power interface；Telephone adapter passes through phone
Interface connects the phone of user family；Telephone adapter is adaptive from the active phone of telephone wire power taking
Device.
2. data as claimed in claim 1, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described DPU include the first data processing unit,
One power supply, PoE/PD circuit, the first relay, the first low-power logic processing unit,
One signal produces testing circuit, the second relay, FXO FXO interface, the first language
Sound coupling circuit, the first data processing unit is connected with optical fiber, the first data processing
Unit, PoE/PD circuit, the first low-power logic processing unit are all connected with the first power supply,
First low-power logic processing unit produces detection electricity with the first relay, the first signal respectively
Road, the second relay, FXO interface are connected, the second relay and the first voice coupling circuit
Parallel connection, the first relay, the first signal produce testing circuit, the second relay, the first voice
Coupling circuit is all connected to DPU to the pair of telephone lines of user family, the first voice coupling electricity
Road, the second relay, FXO interface are also connected with POTS interface.
3. data as claimed in claim 2, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described CPE includes the second data processing unit, the
One end of two data processing unit is connected with data traffic interfaces, and the other end is connected to DPU
To the pair of telephone lines of user family.
4. data as claimed in claim 3, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described PSE include second source, PoE/PSE circuit,
Three relays, the second low-power logic processing unit, secondary signal produce testing circuit, voltage
Testing circuit, one end of second source is connected with commercial power interface, the other end and PoE/PSE electricity
Road is connected, and PoE/PSE circuit and the 3rd relay are connected, the second low-power logic processing unit
Produce testing circuit with the 3rd relay, secondary signal respectively, voltage detecting circuit is connected, the
Three relays, secondary signal produce testing circuit, voltage detecting circuit is all connected to DPU extremely
In the pair of telephone lines of user family, voltage detecting circuit is for detecting DPU to the one of user family
Whether DC voltage is had on telephone wire.
5. data as claimed in claim 4, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: it is single that described telephone adapter includes that the 3rd low-power logic processes
Unit, power supply obtain circuit, the 3rd signal produce testing circuit, the 4th relay, FXS interface,
Second voice coupling circuit, the 3rd low-power logic processing unit respectively with power supply obtain circuit,
3rd signal generation testing circuit, the 4th relay, Foreign eX-change Subscriber FXS interface are connected,
Second voice coupling circuit and the 4th relay parallel connection, FXS interface, the 4th relay, second
Voice coupling circuit is all connected with telephony interface, and power supply obtains circuit, the 3rd signal produces detection
Circuit, the 4th relay, the second voice coupling circuit are all connected to DPU to the one of user family
To on telephone wire, power supply obtains circuit for obtaining in the pair of telephone lines of DPU to user family
Power taking source, is operated for telephone adapter.
6. data as claimed in claim 5, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described first relay, the second relay, the 3rd relay,
4th relay is low-power consumption mechanical relay or light coupling relay, wherein, and the first relay
For closed type relay, the second relay, the 3rd relay, the 4th relay are open type
Relay.
7. data as claimed in claim 5, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described first voice coupling circuit, the second voice coupling circuit
It is that voice couples low pass circuit, for isolated DC and couple low frequency voice signal, isolates simultaneously
High-frequency signal, it is to avoid data service is produced impact.
8. data as claimed in claim 5, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described first low-power logic processing unit, the second low-power consumption
Logical processing unit, the 3rd low-power logic processing unit be low-power consumption micro-control unit MCU,
Low-power consumption on-site programmable gate array FPGA, low-power consumption complex programmable logic device (CPLD),
Any one in low-power consumption application-specific integrated circuit ASIC.
9. data as claimed in claim 8, reverse feeding and voice coexist in a pair phone
The system of line, it is characterised in that: described first low-power logic processing unit, the second low-power consumption
Logical processing unit, the 3rd low-power logic processing unit are low-power consumption micro-control unit
MCU。
10. data based on system described in claim 9, reverse feeding and voice coexist
Method in pair of telephone lines, it is characterised in that comprise the following steps:
A, user side do not have PSE to power, and DPU powers in off-position, data, voice,
Reverse feeding is started working；
When B, data, voice, reverse feeding start to work simultaneously, speech business is as called
Call flow as follows:
Before starting working, second relay of DPU is off, POTS interface and
DPU disconnects to direct current signaling passage between the pair of telephone lines of user family, voice call signal
AC coupled is carried out by the first voice coupling circuit；
When after the telephone set off-hook being connected on telephony interface；3rd low-power consumption of telephone adapter
The software of MCU detects off-hook by FXS interface；Triggered by off-hook event, the 3rd low merit
Consumption MCU produces testing circuit by the 3rd signal and sends out " off hook signal "；This signal is by electricity
Words adapter is sent out by the pair of telephone lines of DPU to user family, is connected to DPU extremely
Each equipment in the pair of telephone lines of user family receives this signal, DPU also from DPU to
Receiving this signal in the pair of telephone lines of family man, the i.e. first low-power consumption MCU passes through the first signal
Produce testing circuit and receive " off hook signal "；Triggered by off-hook event, the first low-power consumption MCU
Simulation off-hook action is sent by FXO interface；So that closing of the circuit, before completing call
Direct current signaling process；
During call, voice call signal is coupled by the first voice from POTS interface
Circuit, the pair of telephone lines of DPU to user family, the second voice coupling circuit, finally by electricity
Words interface receives phone.
11. data as claimed in claim 10, reverse feeding and voice coexist in a pair electricity
The method of words line, it is characterised in that: in step A, the process that DPU powers in off-position
As follows:
Step 101, under the off-position not having PSE to power, open PSE power supply, PSE
Powering on, the second source in PSE powers to the second low-power consumption MCU；Second low-power consumption MCU
Start, initialize；
Step 102, the second low-power consumption MCU detect DPU to user by voltage detecting circuit
Whether there is voltage in the pair of telephone lines of family, if there being voltage, illustrating to be in phone escape state,
Forward step 103 to；If no-voltage, forward step 105 to；
Step 103, the second low-power consumption MCU of PSE produce testing circuit by secondary signal
Sending out " PoE prepares power supply signal " to the first low-power consumption MCU of DPU, the first of DPU is low
After power consumption MCU receives " PoE prepares power supply signal " by the first signal generation testing circuit,
First inquiry phone escape state, if being in talking state, will wait；If being in phone to escape
Raw non-talking state, the first low-power consumption MCU of DPU control the second relay disconnect, first
Relay turns on, so that PSE makes DPU to the pair of telephone lines of user family by twisted-pair feeder
And form path between the PD within DPU, forward step 104 to；
Step 104, the first low-power consumption MCU of DPU produce testing circuit by the first signal
Generate " by electricity standby ready signal ", due to electric by a pair of DPU to user family by twisted-pair feeder
Words line connects together, and telephone adapter and PSE can receive " by electricity standby ready signal ":
3rd low-power consumption MCU of telephone adapter produces testing circuit by the 3rd signal and receives
" by electricity standby ready signal ", if the 3rd low-power consumption MCU obtains power supply, the 3rd is low
Power consumption MCU controls the 4th relay and disconnects；If the 3rd low-power consumption MCU does not obtain electricity
Source, i.e. telephone adapter no-voltage, the 4th relay is normal-open type relay, is disconnected DPU
DC channel between the pair of telephone lines and telephone set of user family；
The second low-power consumption MCU of PSE produces testing circuit by secondary signal and receives " by electricity
Standby ready signal " after, immediately enter step 102 and detect DPU to a pair of user family electricity
Voltage on words line；Without receiving " by electricity standby ready signal ", carry out certain prolonging
Step 102 is returned again to time after；
If step 105 detect DPU to the pair of telephone lines of user family no-voltage, say
Open-wire line road can feed, and now, the second low-power consumption MCU of PSE controls the 3rd relay
Device turns on, by DPU to user family between such PoE/PSE circuit and PoE/PD circuit
Pair of telephone lines constitute path, thus start POE flow process, last PoE/PSE
Circuit starts to PoE/PD line feed, and PoE/PD circuit is in the case of the most powered
The first power supply within DPU is powered, the first power supply be the first data processing unit,
One low-power consumption MCU powers, and data, voice, reverse feeding start to work simultaneously.
12. data as claimed in claim 11, reverse feeding and voice coexist in a pair electricity
The method of words line, it is characterised in that: in step 101, described in there is no the power-off that PSE powers
State has two kinds of situations: a kind of situation is: do not meet PSTN, whole DPU on POTS interface
It is in complete power-down state；Another kind of situation is: be connected to PSTN on POTS interface, first
Low-power consumption MCU is in low power consumpting state.
13. data as claimed in claim 10, reverse feeding and voice coexist in a pair electricity
The method of words line, it is characterised in that: in step B, come when starting PSTN on POTS interface
During electricity；Bell signal is had on POTS interface；FXO interface detects ring action, so that
Programmable detection in first low-power consumption MCU is to ring logic event, touching at this ring event
Giving, the program of the first low-power consumption MCU produces testing circuit by the first signal and sends out " ring
Signal ", this signal is sent out by pair of telephone lines by DPU, is connected to DPU extremely
Each equipment in the pair of telephone lines of user family receives this signal, at this moment the of telephone adapter
Three low-power consumption MCU produce testing circuit by the 3rd signal and receive " bell signal "；Then
The internal processes of the 3rd low-power consumption MCU produces ring action by telephony hardware FXS interface；
So that there is ring in the phone being connected on telephony interface.
14. data as claimed in claim 10, reverse feeding and voice coexist in a pair electricity
The method of words line, it is characterised in that: in step B, at data, voice, reverse feeding together
Time work time, if it occur that the commercial power interface power-off of power-off event, i.e. user, cause PoE/PSE
Circuit is not owing to having power supply to make its power down not work, and then DPU is to a pair phone of user family
Reverse feeding RPF voltage is not just had on line；Due in the pair of telephone lines of DPU to user family
Not having voltage, DPU upper PoE/PD circuit does not just have power supply, and first power supply of DPU gives the
One data processing unit and the power failure of the first low-power consumption MCU, the first data service
Processing unit cannot work, and stops service；But for the first low-power consumption MCU, its inspection
When measuring PoE/PD circuit unpowered, automatically switch to FXO interface and power.
15. data as claimed in claim 14, reverse feeding and voice coexist in a pair electricity
The method of words line, it is characterised in that: described first low-power consumption MCU is detecting PoE/PD
During circuit unpowered, also can control the second relay conducting, the first relay disconnects, and makes PSTN
Feed arrives DPU and disconnects to the pair of telephone lines of user family, the first relay, it is to avoid PSTN
Feed and cause mis-hanging-on abnormal by relay arrival PoE/PD circuit power consumption；Then, DPU
The first low-power consumption MCU by first signal produce testing circuit timing send out " power-off survival believe
Number "；3rd low-power consumption MCU of telephone adapter produces testing circuit by the 3rd signal and receives
After " power-off survival signal ", the 3rd low-power consumption MCU keep controlling the 4th relay and lead
Logical；Phone is in power-off survival state, and now power supply acquisition circuit powers to FXS interface.
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| CN201610316054.8A CN106027822B (en) | 2016-05-12 | 2016-05-12 | Data, reverse feeding and voice coexist in the system and method for a pair of telephone lines |
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| CN106027822B (en) | 2018-12-18 |
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