JP5211670B2 - Power-saving IP phone system - Google Patents

Description

  The present invention relates to an IP telephone system, and more particularly to a power saving IP telephone system.

  An IP telephone requires a high-speed CPU for control and a LAN LSI such as Ethernet (registered trademark), and has a large memory capacity and power consumption. Further, since these circuits are operated even when communication is not normally performed in order to always monitor packets normally, a large amount of power is consumed when considered as a system.

As a system that solves the problem of consuming a large amount of power, for example, Patent Document 1 discloses the power of each part except for the LAN interface of the terminal, key detection, and timer means in a standby state where there is no incoming / outgoing time for a predetermined time. It has a power saving mode to restrict, and there is an incoming call in the power saving mode, when a power mode switching packet is received through the LAN interface means, when a key operation input is detected, or when an elapse of a predetermined time is detected At this time, there is known a technique for regularly managing the presence or absence of connected IP telephone terminals while reducing power consumption by providing a normal mode for supplying power to all parts.
Japanese Patent Laying-Open No. 2005-101921

  However, in the above-described conventional system, only the terminal is implemented. Even in the power saving mode, power is continuously supplied to each part of the telephone terminal. There is a limit. In addition, when the power is completely turned off, it takes time (for example, several tens of seconds) until the operation of each part in the terminal becomes normal after the power is turned on. There was a problem.

  The present invention has been devised in view of such circumstances, and it is an object of the present invention to be able to completely stop power feeding from a main apparatus to an extension telephone terminal without failing to respond to an incoming call.

A power-saving IP telephone system of the present invention includes one or more extension telephone terminals connected to a LAN, and a main device that controls the extension telephone terminals via the LAN, and each of the extension telephone terminals. The IP extension connection means for connecting to the IP extension, the power receiving means for receiving power from the LAN, and the fact that the terminal has become operable after the power receiving means has started to receive power. Operable state notifying means for notifying the main device or operable state returning means for returning whether or not the terminal is operable in response to an inquiry from the main device, wherein the main device has the extension Power supply control means for controlling power supply to each of the telephone terminals, power supply start means for starting power supply to the extension telephone terminal of the destination when there is an incoming call to the extension telephone terminal, A message transmitting means for transmitting the message to the caller of the incoming call, an extension telephone terminal operation determining means for determining whether or not the extension telephone terminal is in an operable state, and the extension telephone terminal operation determining means extension telephone terminal is closed and determination after connecting means for connecting said source and said extension telephone terminal after determining that the operable state, the said extension telephone terminal operation determination means, said operating state notification Based on the notification from the means or the reply from the operable state return means, it is determined whether or not the extension telephone terminal is in an operable state, and the connection means after the determination allows the extension telephone terminal to operate In the case of a response, the extension telephone terminal is set in a ringing state, and it is determined whether or not there is a response from the extension telephone terminal. If there is a response, the caller and the extension telephone terminal Connect, if the extension telephone terminal is not in an operable state detects whether a timeout or not, if a timeout is characterized by stopping the power supply.

  According to the present invention, in the power saving IP telephone system, the power supply from the main apparatus to the extension telephone terminal is completely stopped without failing to respond to the incoming call.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of an IP telephone system according to a first embodiment of the present invention. In FIG. 1, 1 is an IP telephone system, 11 is a main unit, 12 is an extension telephone terminal, 13 is a WAN, 14 is a LAN,
Reference numeral 15 denotes a telephone network. The IP telephone system 1 includes a main apparatus 11 and a plurality of extension telephone terminals 12. The main apparatus 11 and a plurality of extension telephone terminals 12 are connected by a LAN 14, and the main apparatus 11 is connected to a WAN 13 and a telephone network 15. ing.

FIG. 2 is a block diagram of the main device of the IP telephone system of the present invention. In FIG. 2, 16 is a WAN port unit, 17 is a line interface unit , 21 is a communication control unit, 22 is a common memory unit, 23 is a message transmission unit, 24 is a power supply processing unit, 25 is a loop detection unit, and 26 is an exchange. A processing unit, 27 is a GW unit, 28-1, 28-2, and 28-3 are LAN port units, 29 is a power supply unit, and 30 is a backup battery unit.

The main device 11 is connected to a plurality of extension telephone terminals 12 via LAN port units 28-1, 28-2, 28-3, and is connected to the WAN 13 via the WAN port unit 16 and via the line interface unit 17. It is connected to the network 15. The GW unit 27, the communication control unit 21, and the exchange processing unit 26 perform overall communication control of the main apparatus in cooperation. The loop detection unit 25 of the main device 11 detects the loop of the extension telephone terminal 12 via each LAN port unit 28-1, 28-2, 28-3, and notifies the communication control unit 21 of the loop detection. . Each of the LAN port units 28-1, 28-2, and 28-3 has a phantom power supply function that uses a LAN standard signal line Tx / Rx for power supply. The signal line Tx / Rx is subjected to line current loop detection and polarity reversal detection. The communication control unit 21 controls the power supply processing unit 24 to supply the power from the power supply unit 29 to the corresponding extension telephone terminal 12 via the LAN port unit. The message transmitting unit 23 transmits a necessary message to the telephone terminals connected to the extension telephone terminal 12, the WAN 13, and the telephone network 15 via the communication control unit 21 and the exchange processing unit 26.

  FIG. 3 is a block diagram of the extension telephone terminal of the IP telephone system of the present invention. In FIG. 3, 31 is an audio processing codec unit, 32 is a data transmission / reception unit, 33 is a LAN I / F unit, 34 is a power reception unit, 35 is a power supply circuit unit, 36 is a loop generation unit, 37 is a power supply control unit, and 38 is a wake. An up state notification unit, 39 is a control unit, 41 is a display unit, 42 is a key unit, 43 is a hook switch unit, 44 is a speaker unit, 45 is a microphone unit, and 46 is a handset unit.

  When the hook switch unit 43 goes off-hook or a key input is performed on the key unit 42, the loop generation unit 36 generates a loop and notifies the main apparatus 11 via the LAN I / F unit 33 and the LAN 14. . When receiving a power reception signal from the main apparatus 11 via the LAN 14 and the LAN I / F unit 33, the power reception unit 34 supplies power to each unit of the extension telephone terminal 12 via the power circuit unit 35.

  Further, the control unit 39 controls the wakeup state notification unit 38 and notifies the main apparatus 11 of the wakeup state of the internal telephone terminal 12 via the LAN I / F unit 33 and the LAN 14 by the data transmission / reception unit 32. .

FIG. 4 is a flowchart of the incoming operation to the power supply stop mode terminal of the main apparatus. When an incoming call (INVITE) is performed in step S401 in FIG. 4, it is determined in step S402 that the terminal is in the power supply stop mode terminal, and in step S403, it is determined whether or not the transfer / absence mode is set.

  If it is not the transfer / answering mode in step S403, power supply to the extension LAN port unit is started in step S404, the incoming call is answered in step S405, and between the main unit and the caller in step S406. Then, a call session is established, and in step S407, a first message indicating that the connection is established is sent to the transmission source.

  Thereafter, in step S408, it is determined whether or not a wake-up state is detected. If a wake-up state is detected, the extension telephone is set in a ringing state in step S409, and the extension telephone response is determined in step S410. In step S411, the caller and the extension terminal are connected to each other, and the process ends in step S412.

  If it is in the transfer / answering mode in step S403, the process proceeds to step S413. In step S413, the incoming call is answered. In step S414, a call session is established between the main apparatus and the caller. In step S415, a third message indicating that the transfer / answering mode is set is sent to the transmission source. In step S416, transfer / answering mode processing is performed, and the process proceeds to step S412 and ends.

  If it is determined in step S408 that the wake-up state is not detected, the process proceeds to step S420. In step S420, it is determined whether or not a timeout has occurred. If not, the process proceeds to step S408 and the wake-up state is detected. Repeat the determination of whether or not. In the case of time-out, in step S418, the power supply is stopped, in step S419, a second message indicating no response is sent to the transmission source, in step S421 it is disconnected, and the process proceeds to step S412 and ends.

  If there is no response from the telephone in step S410, it is determined in step S417 whether or not a timeout has occurred. If not, the process proceeds to step S408 to determine whether or not a wake-up state has been detected. If the time-out is repeated, the power supply is stopped in step S418, the second message indicating no response is sent to the sender in step S419, the call is disconnected in step S421, and the process proceeds to step S412 and ends. .

  FIG. 5 is a flowchart of the starting operation from the power supply stop mode when the extension telephone terminal is off-hook. When the process starts in step S501 of FIG. 5, it is determined in step S502 whether or not it is off-hook.

  In the case of off-hook, a loop is generated in step S503, power reception is started from the main unit in step S504, reset start is performed in S505, program load initialization is performed in step S506, and step S507 is performed. , Wake-up completion is sent to the main unit, and the process ends in step S508.

FIG. 1 is an overall configuration diagram of an IP telephone system according to a first embodiment of the present invention. FIG. 2 is a block diagram of the main device of the IP telephone system of the present invention. FIG. 3 is a block diagram of the extension telephone terminal of the IP telephone system of the present invention. FIG. 4 is a flowchart of the incoming operation to the power supply stop mode terminal of the main apparatus. FIG. 5 is a flowchart of the starting operation from the power supply stop mode when the extension telephone terminal is off-hook.

Explanation of symbols

1 IP telephone system 11 Main unit 12 Extension telephone terminal 13 WAN
14 LAN
DESCRIPTION OF SYMBOLS 15 Telephone network 21 Communication control part 22 Common memory part 23 Message transmission part 24 Power supply process part 25 Loop detection part 26 Exchange process part 27 GW part 28-1 LAN port part 28-2 LAN port part 28-3 LAN port part 29 Power supply Unit 30 backup battery unit 31 voice processing codec unit 32 data transmission / reception unit 33 LAN I / F unit 34 power receiving unit 35 power supply circuit unit 36 loop generation unit 37 power supply control unit 38 wake-up state notification unit 39 control unit 41 display unit 42 key unit 43 Hook switch part 44 Speaker part 45 Microphone part 46 Handset part

Claims (1)

A power-saving IP telephone system comprising one or more extension telephone terminals connected to a LAN and a main device that controls the extension telephone terminals via the LAN,
Each of the extension telephone terminals has an IP extension connection means for connecting to an IP extension, a power receiving means for receiving power from the LAN, and the terminal can operate after the power receiving means starts receiving power. Operable state notifying means for notifying the main device that it has entered a state or operable state returning means for returning whether or not its own terminal is operable in response to an inquiry from the main device,
The main unit includes power supply control means for controlling power supply to each of the extension telephone terminals, and power for starting power supply to a destination extension telephone terminal when there is an incoming call to the extension telephone terminal Supply starting means, message transmitting means for transmitting a predetermined message to the caller of the incoming call, extension telephone terminal operation determining means for determining whether or not the extension telephone terminal has become operable, and the extension telephone possess a determination after connecting means terminal operation determining means for connecting said source and said extension telephone terminal after determining with the extension telephone terminal is operable state, and
The extension telephone terminal operation determining means determines whether or not the extension telephone terminal is in an operable state based on a notification from the operable state notifying means or a reply from the operable state returning means, When the extension telephone terminal is in an operable state, the connection means after the determination places the extension telephone terminal into a calling state, determines whether there is a response from the extension telephone terminal, and has a response. In this case, the caller is connected to the extension telephone terminal, and if the extension telephone terminal is not in an operable state, it is detected whether or not a timeout has occurred, and in the case of a timeout, power supply is stopped. A power-saving IP phone system.

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