KR100941550B1 - 통합 ｏＩＰ Add-on integration device for private ΙΡ exchange - Google Patents

Abstract

A VoIP add-on integrator for a private IP exchange is disclosed. The VoIP add-on integrator for this private IP exchange is network-operated with the IP exchange and operable to transmit and receive IP packets to / from the IP exchange, the IP packet including an add-on request message packet and a voice packet. MAC & PHY Processing Unit, Conference Unit operable to provide conference call add-on, and Voice Playing Unit operable to provide voice guidance and voice listening add-on A voice recording unit operable to provide a voice storage add-on function, an encryption unit operable to provide a voice packet encryption add-on function, a DSP unit operable to provide a voice code conversion add-on function, The conference unit and the voice reproduction unit based on the received additional function request message packet; And a control unit operable to establish a communication path between at least one of the voice record unit, the encryption unit, and the DSP unit and the MAC and PHY processing unit.

Private IP Switch (IP-PBX), VoIP Add-On, VoIP Gateway

Description

VoIP add-on integrated device for private exchanges {VoIP ADD-ON FUNCTION INTEGRATED DEVICE FOR IP-PRIVATE BRANCH EXCHANGE}

The present invention relates to a private IP exchange (IP-PBX), and more particularly, to an apparatus for integrating VoIP add-on for a private IP exchange.

The private IP switch (IP-PBX) according to the prior art is a VoIP add-on device that provides each function to provide additional functions such as conference call, voice announcement, voice storage, codec conversion, and voice packet encryption. These were provided separately. These devices were connected to the IP-PBX via Ethernet Switch, LAN Switch or Router respectively.

For example, a conference system (Conference System) was used as the device providing the conference call add-on, and an interactive voice response (IVR) system was used as the device providing the voice guidance add-on. A voice mail system was used as a device to provide a voice codec, and a codec translator was used as a device to provide a voice code conversion add-on. A media security system was used as a device to provide a voice packet encryption add-on. Used.

According to the prior art, a communication equipment operator has installed a conference call add-on device, a voice guidance add-on device, a voice storage add-on device, a codec conversion add-on device, and a voice packet encryption add-on device to each device. Assign and configure IP address and MAC address separately. In addition, the communication equipment operator individually performs configuration management, performance management, diagnosis, and fault management for each of the additional function devices through the operations, administration and maintenance (OAM) device.

As described above, the IP-PBX according to the prior art is a VoIP add-on device that provides each additional function to provide additional functions such as conference calls, voice announcements, voice storage, codec conversion, and voice packet encryption. In order to complicate the system configuration by separately installing each additional function device, the MPU, the storage device, the VoIP module, the power module, and the like are separately provided, causing resource redundancy and cost. .

In addition, each add-on device requires a separate IP address, causing a waste of IP addresses, and IP-PBX individually performs configuration management, performance management, diagnosis, and fault management for each add-on device. As we had to do that, we complicated our management program and increased our administrative costs.

In addition, when providing two or more of the additional functions of conference call, voice guidance, voice storage, codec conversion, and voice packet encryption at the same time, the IP-PBX performs call setup operation for each additional function device. Since a separate program is required, a program of an IP-PBX providing additional functions becomes complicated, and a voice packet propagation delay occurs while a voice packet passes through each additional function device.

It is an object of the present invention to implement the additional functions of conference call, voice announcement, voice storage, voice code (Codec) conversion and voice packet encryption provided in a single device provided using a private IP exchange.

Another object of the present invention is to implement the additional functions provided by using a private IP exchange in a single device, thereby simplifying the device configuration and the additional function implementation and management program for providing the additional functions, the required IP address and MAC It is to reduce the number of addresses to one.

The VoIP add-on integrating apparatus for a private IP exchange according to the present invention is connected to the IP exchange and transmits / receives an IP packet to / from the IP exchange, the IP packet including an add-on request message packet and a voice packet. MAC and PHY Processing Unit (MAC & PHY Processing Unit) operable to operate, Conference Unit operable to provide conference call add-on, and Voice Reproducing Unit operable to provide voice guidance and voice listening add-on ( Voice Playing Unit, a Voice Recording Unit operable to provide a voice storage add-on, an Encryption unit operable to provide a voice packet encryption add-on, and a DSP operable to provide a voice code conversion add-on A unit, the conference unit, and the sound based on the received additional function request message packet Reproducing unit, and a voice the record unit, the encryption unit and a control unit operable to set a communication path between the DSP unit of the at least one unit and the MAC and PHY processing unit.

According to the present invention, the following effects are obtained.

(1) Only one IP address is needed to provide the additional functions of conference call, voice announcement, voice storage, codec conversion and voice packet encryption.

(2) It is possible to simplify the OAM program and reduce the construction and management costs by reducing the configuration management, performance management, diagnosis, and failure management objects for the device providing the additional functions into one.

(3) The IP-PBX may simultaneously provide two or more of the above additional functions through one call setup operation. Therefore, the call processing program of the IP-PBX is simplified.

(4) Even when two or more of the above additional functions are provided at the same time, the voice packet transmission delay does not occur.

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

1 shows an example of a network environment 100 in which an embodiment of the present invention may be implemented.

Exemplary network environment 100 includes IP-PBX 110, OAM device 120, LAN switch 130, wireless access point 140, Ethernet switch 150, VoIP gateway 160, wireless terminals 141. -143), together with the IP terminals 151-153 and the subscriber terminals 161-163, may include a VoIP add-on integrator 200 according to an embodiment of the present invention.

The IP-PBX 110 is connected to the OAM device 120, the wireless access point 140, the Ethernet switch 150, the VoIP gateway 160, and the VoIP add-on integrator 200 through the LAN switch 130. . The OAM device 120 may be used to perform configuration management, performance management, diagnostics, and fault management for the VoIP add-on integrator 200 according to the present invention. The wireless access point 140 capable of wireless communication with wireless terminals such as the PDA 141, the video phone 142, and the WiFi phone 143, in cooperation with the LAN switch 130, performs an IP- connection with these wireless terminals. A relay function is performed between the PBX 110 and the VoIP add-on integrator 200. Ethernet switch 150, which is a switching hub for Ethernet, connects IP terminals such as IP phone 151, video phone 152, PC phone 153, and the like, via LAN switch 130 to IP-PBX 110. ) And the VoIP add-on integrator 200. The VoIP gateway 160, which connects the subscribing telephone network with the IP telephone network, connects the subscriber stations such as the analog telephone 161, the facsimile 162, the digital multifunction telephone 163, and the like to the LAN switch 130. It connects to the IP-PBX 110 and the VoIP add-on integrator 200 through. The VoIP gateway 160 is also connected to a packet switched telephone network (PSTN) 200.

2 is a block diagram illustrating a VoIP add-on integrator 200 according to an embodiment of the present invention. In the figure, solid arrows indicate control signals, dashed arrows indicate voice signals, and dashed-dotted arrows indicate IP packets including voice packets, respectively.

The CPU 201 is operable to control the process of call processing and the whole process of each additional function processing according to the present invention. A CPU memory 202 is connected to the CPU 201, and the CPU memory 202 stores programs and data related to the operation of the CPU.

The MAC & PHY processing block 204 that interfaces with the IP-PBX 110 is responsible for the transmission and reception of various IP packets between the IP-PBX 110 and the VoIP add-on integrator 200.

The encryption block 203 that exchanges IP packets between the MAC & PHY processing block 204 and the packet processing block 205 includes voice packets and call processing messages under the control of the CPU 201. An encryption process or a decryption process may be performed on various control message packets.

The packet processing block 205 transmits and receives various control message packets including a call processing message to the CPU 201, extracts a voice signal from the voice packet, or converts the voice signal into a packet, 207 is operable to send and receive voice signals.

The voice buffer 206 connected to the packet processing block 205 temporarily stores a voice signal extracted by the packet processing block 205 from the voice packet or received by the packet processing block 205 from the DSP 207. Can be stored.

The DSP 207 is connected between the packet processing block 205 and the switching block 213 and, under the control of the CPU 201, performs codec conversion and echo cancellation, noise signal control, tone generation and detection, and the like. It is operable to perform the function of, and the DSP memory 208 coupled to the DSP 207 can store programs and data related to the operation of the DSP 207.

The switching block 213 is responsible for exchanging voice signals between the DSP 207, the conference block 209, the voice reproduction block 210, and the voice record block 211 under the control of the CPU 201. do.

Buffer digital voice signals (e.g., pulse code modulated (PCM) data) between the switching block 213 and the DSP 207, the conference block 209, the voice reproduction block 210, and the voice record block 211, respectively. PCM memories 214-217 may be disposed.

The conference block 209, under the control of the CPU 201, adjusts the gain of the voice signal received via the switching block 213, and after mixing all the voice signals belonging to the same conference group, The voice signal of the receiver may be removed from the mixed voice signal to generate a signal in which only the voices of others are mixed and transmitted through the switching block 213.

The voice play block 210 is operable to read the voice signal from the voice memory 212 and send it out through the switching block 213 under the control of the CPU 201.

The voice record block 211 is a specific storage on the voice memory 212, in which the CPU 201 instructs the voice signal received via the switching block 213, under the control of the CPU 201. Operable to store in space.

The voice memory 212 may be used to store preset voice announcements or music sound data.

When installing the VoIP add-on integrating apparatus 200 according to the present invention, the communication equipment operator first sets an IP address and a MAC address in the VoIP add-on integrating apparatus 200. In addition, the communication equipment operator performs configuration management, performance management, diagnosis and fault management for the VoIP add-on integrating device according to the present invention through the OAM device 120.

Hereinafter, operations after the installation of the VoIP add-on integrating apparatus 200 is completed will be described with reference to FIGS. 1 and 2.

<Example 1>

In the present embodiment, the VoIP add-on integrator 200 for the IP-PBX 110 performs only one of the additional functions of conference call, voice announcement, voice code (Codec) conversion, and voice packet encryption. Corresponds to

Conference call

When any one of the wireless terminal 141-143, the IP terminal 151-153, or the VoIP subscriber station 161-163 requests a conference call (for example, the user is using the IP telephone 151). User A on call with B presses the conference call function button on IP phone 151 and dials user C's phone number to call user C to make a three-way conference call with users A, B, and C), The signal is transmitted to the IP-PBX 110 via the wireless access point 140, the Ethernet switch 150, or the VoIP gateway 160 and the LAN switch 130, and the IP-PBX 110 receiving the signal is The add-in request message packet including the conference call request message is sent to the VoIP add-on integrator 200.

The add-on request message packet is received by the MAC & PHY processing block 204 of the VoIP add-on integrator 200, and the MAC & PHY processing block 204 encrypts the add-on request message packet to the encryption block 203. The packet processing block 205 is transmitted to the packet processing block 205 via. The packet processing block 205 then sends a conference call request message to the CPU 201. Receiving the conference call request message, the CPU 201 determines whether there is an available conference call group among the total conference group capacities that it holds to accommodate the requested conference call, and then a " disallowed conference call " message. (If there is a conference call group available) or a " confer conference call group " message (if no conference call group is available) is sent via the MAC & PHY processing block 204 to the IP-PBX 110.

When receiving the " disallow conference call " message from the VoIP add-on integrator 200, the IP-PBX 110 sends a " service unavailable " message to the terminal (in this example, user A's terminal) that requested the conference call. .

On the other hand, when receiving a "conference call accept" message from the VoIP add-on integrator 200, the IP-PBX 110 is connected to the terminals participating in the conference call (in this example, the user A, B, C The call establishment process between the terminals) and the VoIP add-on integrator 200 is performed. When the call setup process is completed, it is possible to send and receive voice packets between the terminals participating in the conference call and the VoIP add-on integrator 200.

At this time, the CPU 201 of the VoIP add-on integrator 200 needs necessary control information (eg, based on call processing information according to the call setup process) so that the packet processing block 205 can transmit and receive the voice packet. For example, a sender / receiver IP number, a sender / receiver RTP port number, a voice data length, a packet transmission period, etc.) are set in the packet processing block 205. The CPU 201 controls the switching block 213 so that the voice signal extracted from the voice packet in the packet processing block 205 can be transmitted to the conference block 209 via the DSP 207. After establishing a channel and selecting one of the available conference call groups, the CPU 201 controls the conference block 209 to connect the pre-selected conference call group with the call path.

Thereafter, when a voice packet is transmitted from the terminals participating in the conference call to the VoIP add-on integrator 200, the MAC & PHY processing block 204 receives the voice packet and processes the packet through the encryption block 203. Transmit to block 205. At this time, if the encryption function is not required, the encryption block 203 does not perform any operation on the voice packet passing through it.

The packet processing block 205 determines whether the received voice packet is received or not (e.g., whether or not the information in the voice packet matches the call processing information set in advance by the CPU 201), and then the received voice packet. If so, the voice signal is extracted from the voice packet and transmitted to the DSP 207.

The DSP 207 performs echo cancellation and noise adjustment on the received voice signal, and then transmits the result to the conference block 209 through the call path set in advance by the CPU 201. In this case, the switching block 213 provides a call path between the DSP 207 and the conference block 209 for each voice signal.

The conference block 209 adjusts the gain of the voice signals received through each channel, mixes all voice signals belonging to the same group, and then removes the receiver's voice signal from the mixed voice signal, thereby making the voice of others Create a mixed signal of bays. Then, the CPU 201 transmits the mixed voice signal to the DSP 207 through a preset call path.

The DSP 207 sends the voice signal received from the conference block 209 to the packet processing block 205, and the packet processing block 205 sends the voice signal in accordance with call processing information previously set by the CPU 201. After converting to a voice packet, it is transmitted to the MAC & PHY processing block 204 via the encryption block 203.

Each voice packet output from the VoIP add-on integrator 200 via the MAC & PHY processing block 204 is transmitted to corresponding terminals participating in a conference call through a packet switch network. In this way, the conference call using the VoIP add-on integrator is made.

voice guidance

When a certain terminal requests a voice announcement, the IP-PBX 110 proceeds with a call setup process between the terminal requesting the service and the VoIP add-on integrator 200.

If the call setup process is normally performed, the CPU 201 of the VoIP add-on integrating apparatus 200 may be configured based on the call processing information according to the call setup process so that the packet processing block 205 can transmit and receive the voice packet. Necessary control information is set in the packet processing block 205. The CPU 201 may activate the tone detection function of the DSP 207 to detect the voice guidance selection and control signals transmitted from the terminal requesting the service. In addition, the CPU 201 sets, in the voice reproducing block 210, an address on the voice memory 212 in which the announcement or music sound corresponding thereto is stored according to a service program registered in advance, and the switching block 213 Control to establish a communication path for transmitting a voice signal from the voice reproduction block 210 to the DSP 207.

Thereafter, the voice reproducing block 210 reads the announcement or music sound data from an address on the voice memory 212, which is set in advance by the CPU 201, and transmits the signal through a pre-established call path. 207).

The DSP 207 transfers the received voice signal back to the packet processing block 205, and the packet processing block 205 converts the voice signal into a voice packet in accordance with call processing information previously set by the CPU 201. After that, the data is transmitted to the MAC & PHY processing block 204 via the encryption block 203.

Thereafter, the voice packet output from the VoIP add-on integrating apparatus via the MAC & PHY processing block 204 is sent to the terminal requesting the voice guidance through the packet switching network.

On the other hand, if the terminal using the service transmits the voice guidance selection and control signal, this signal is detected by the tone detection function of the DSP 207 of the VoIP add-on integrator, and the information is transferred back to the CPU 201. The CPU 201 searches for a new address on the voice memory 212 storing the announcement or music sound corresponding thereto according to the service program registered in advance and the information thereof, and then replaces the address with the voice playback block. Reset to 210.

Thereafter, the voice reproducing block 210 reads the announcement or music sound data from the newly set address on the voice memory 212 and transmits this signal to the DSP 207 through the established call path.

The DSP 207 transfers the received voice signal back to the packet processing block 205, and the packet processing block 205 converts the voice signal into a voice packet in accordance with call processing information previously set by the CPU 201. After that, the data is transmitted to the MAC & PHY processing block 204 via the encryption block 203.

Thereafter, the voice packet output from the VoIP add-on integrating apparatus via the MAC & PHY processing block 204 is sent to the terminal requesting the voice guidance through the packet switching network.

Voice storage

When a certain terminal wants to store a new voice, the IP-PBX 110 sends an additional function request message packet including a storage request message to the VoIP additional function integrator 200.

The add-on request message packet is received by the MAC & PHY processing block 204 of the VoIP add-on integrator 200, and the MAC & PHY processing block 204 encrypts the add-on request message packet to the encryption block 203. The packet processing block 205 is transmitted to the packet processing block 205 via. The packet processing block 205 then sends a storage request message to the CPU 201. After receiving the storage request message, the CPU 201 analyzes the available storage capacity among the total storage capacity, and determines whether the requested storage is possible, and then displays the MAC & MAC message. Send to IP-PBX 110 via PHY processing block 204.

When receiving a 'storage possible' message from the VoIP add-on integrator 200, the IP-PBX 110 proceeds with a call setup process between the terminal requesting the service and the VoIP add-on integrator 200. When the call setup process is completed, the terminal sends a voice packet to the VoIP add-on integrator 200.

At this time, the CPU 201 of the VoIP add-on integrator 200 receives necessary control information based on the call processing information according to the call setup process so that the packet processing block 205 can transmit and receive the voice packet. Set in the processing block 205 and control the switching block 213 to establish a call path so that the voice signal can be transmitted to the voice record block 211 via the DSP 207, and the voice signal will be stored. An address on the memory 212 is set in the voice record block 211.

After that, when the voice packet transmitted from the terminal requesting the service is input to the MAC & PHY processing block 204, the MAC & PHY processing block 204 sends the corresponding voice packet to the packet processing block (203) through the encryption block 203. 205).

The packet processing block 205 determines whether or not the received voice packet is received, and then extracts a voice signal from the received voice packet and transmits it to the DSP 207.

The DSP 207 performs echo cancellation and noise adjustment on the received voice signal, and then transmits the result to the voice record block 211 through a preset call path by the CPU.

The voice record block 211 stores the received voice signal in an address on the voice memory 212 set in advance by the CPU 201.

Listen to your voice

When an arbitrary terminal wants to listen to the stored voice, the CPU 201 of the VoIP add-on integrator 200 searches for an address on the voice memory 212 according to the subscriber information to be listened to, and then Except for setting an address in the voice reproducing block 210 and transmitting the state information on the storage space of the subscriber to be listened to, to the corresponding terminal in a message or voice, any terminal receives the voice guidance. Follow the same procedure as requested.

Negative sign ( Codec ) Convert

When terminals using different codes (Codec) want to talk with each other, the IP-PBX 110 proceeds with a call setup process between the terminals requesting the service and the VoIP add-on integrator 200.

If the call setup process is normally performed, the CPU 201 of the VoIP add-on integrating apparatus 200 may be configured based on the call processing information according to the call setup process so that the packet processing block 205 can transmit and receive the voice packet. Necessary control information is set in the packet processing block 205. The CPU 201 activates the voice code (Codec) conversion function of the DSP 207, provides information necessary for the voice code conversion to the DSP 207, and the voice signal is supplied from the DSP 207 to the DSP 207. The switching block 213 is controlled to establish a call path so as to loop back.

Thereafter, the voice packet transmitted from one terminal is input to the MAC & PHY processing block 204, and is sent to the packet processing block 205 via the encryption block 203.

The packet processing block 205 determines whether or not the received voice packet is received, and then, in the case of the received voice packet, extracts a voice signal from the voice packet and transmits it to the DSP 207.

The DSP 207 converts the received voice signal into an internal standard voice code (Codec) method, and then transmits the result back to the DSP 207 through the call path set in advance by the CPU 201. Upon receiving the voice signal converted into the internal standard voice code (Codec) method, the DSP 207 converts the voice signal into the voice code method used by the other terminal and transmits the voice signal to the packet processing block 205 again. .

The packet processing block 205 receiving the voice signal converts the voice signal into a voice packet according to the call processing information set in advance by the CPU 201, and then performs MAC & PHY processing through the encryption block 203. Transmit to block 204.

Thereafter, the voice packet output from the VoIP add-on integrator 200 via the MAC & PHY processing block 204 is sent to the other terminal through the packet switching network.

Similarly, the voice packet transmitted to the other terminal is converted into a voice code (Codec) method used by one terminal in the same manner as the above process and transmitted.

Voice packet encryption

If any terminal wants to encrypt a voice packet during a call, the IP-PBX 110 proceeds with a call setup process between the terminal requesting the service and the VoIP add-on integrator 200.

If the call setup process is normally performed, the CPU 201 of the VoIP add-on integrator 200 may provide information about the encryption target (for example, sender / recipient IP number, sender / receiver RTP port number, etc.) and encryption master key. (Master Key) information is set in the encryption block 203, and necessary control information is sent to the packet processing block 205 based on the call processing information so that the packet processing block 205 can transmit and receive the voice packet. Set it. The CPU 201 then controls the switching block 213 to establish a communication path so that the audio signal is looped back from the DSP 207 to the DSP 207.

Thereafter, the voice packet transmitted from the terminal requesting the service is inputted to the MAC & PHY processing block 204 and sent to the packet processing block 205 via the encryption block 203. In this path, the encryption process for the voice packet is set in an inactive state by the CPU 201 in advance.

The packet processing block 205 determines whether or not the received voice packet is received, and then, in the case of the received voice packet, extracts a voice signal from the voice packet and transmits it to the DSP 207.

The DSP 207 transfers the received voice signal back to the DSP 207 through the call path set in advance by the CPU 201. The DSP 207 sends the voice signal back to the packet processing block 205.

The packet processing block 205 converts the voice signal into a voice packet according to the call processing information set in advance by the CPU 201, and sends it to the encryption block 203.

The encryption block 203 encrypts the voice packet based on the encryption master key information previously set by the CPU 201, and then transmits the encrypted voice packet to the MAC & PHY processing block 204. Thereafter, the encrypted voice packet is sent to the terminal of the other party through the packet switching network.

In contrast, the encrypted voice packet transmitted from the terminal on the other side is input to the MAC & PHY processing block 204 and sent to the encryption block 203. The encryption block 203 decrypts the encrypted voice packet based on the encryption master key information previously set by the CPU 201 and sends the decrypted voice packet to the packet processing block 205.

The packet processing block 205 determines whether or not the received voice packet is received, and then, in the case of the received voice packet, extracts a voice signal from the voice packet and transmits it to the DSP 207.

The DSP 207 transfers the received voice signal back to the DSP 207 through the call path set in advance by the CPU 201, and the DSP 207 sends the voice signal back to the packet processing block 205. ).

 The packet processing block 205 converts the voice signal into a voice packet according to the call processing information previously set by the CPU 201, and then transmits the voice signal to the MAC & PHY processing block 204 via the encryption block 203. . In this path, the encryption process for the voice packet is set in an inactive state by the CPU 201 in advance.

Thereafter, the decrypted voice packet is sent to the terminal that requested the service through the packet switching network.

<Example 2>

This embodiment corresponds to a case where an arbitrary terminal desires two or more additional functions at the same time.

In the prior art, when two or more additional functions are desired at the same time, IP-PBX has individually performed call setup between devices providing the respective additional functions. However, when using the VoIP add-on integrator 200 according to the present invention, even if two or more add-ons are simultaneously required, the IP-PBX 110 only needs to perform call setup once.

For example, if the terminals requesting the service use different types of voice codes (Codec) and simultaneously require an encryption function, and have a conference call with background music and want to store the contents of the call, IP The PBX 110 proceeds with a call setup process between the terminals wishing to service and the VoIP add-on integrating apparatus 200.

If the call setup process is normally performed, the CPU 201 of the VoIP add-on integrating apparatus 200 can provide information on the encryption target (for example, sender / receiver IP number, sender / receiver RTP port number, etc.) and encryption master. The key information is set in the encryption block 203, and necessary control information is set in the packet processing block 205 based on the call processing information so that the packet processing block 205 can transmit and receive the voice packet. The CPU 201 activates the voice code (Codec) conversion function of the DSP 207, provides the DSP 207 with information necessary for voice code conversion, and controls the switching block 213 to control the DSP 207. And establish a communication path for transmitting and receiving voice signals between the conference block 209. In addition, the CPU 201 sets an address on the voice memory 212 in which the background music is stored to the voice play block 210, and controls the switching block 213 to play the conference block 209 from the voice play block 210. Build a call path to send background music signals. In addition, the CPU 201 sets an address on the voice memory 212 to store the contents of the conference call in the voice record block 211, and controls the switching block 213 to control the voice record block 211 from the conference block 209. To establish a call route to send the conference call content. Finally, the CPU 201 selects one of the available conference call groups, and then controls the conference block 209 to connect the previously selected conference call group with all the call paths.

Thereafter, the voice packet transmitted from the terminal requesting the service is input to the MAC & PHY processing block 204 and sent to the encryption block 203. The encryption block 203 performs the decryption process based on the encryption master key information previously set by the CPU 201, and then sends the result to the packet processing block 205.

The packet processing block 205 determines whether or not the received voice packet is received, and then, in the case of the received voice packet, extracts a voice signal from the voice packet and transmits it to the DSP 207.

The DSP 207 converts the received voice signal into an internal standard voice code (Codec) method, and then transmits the result to the conference block 209 through the call path set in advance by the CPU 201. At the same time, the voice reproducing block 210 reads background music data from an address on the voice memory 212, which is set in advance by the CPU 201, and transmits this signal to the conference block 209 through the pre-established communication path. To send).

The conference block 209 adjusts the gain of the voice signals received through each communication path, mixes all the voice signals belonging to the same group, and then converts the mixed voice signals into the call set in advance by the CPU 201. Is transmitted to the voice record block 211 through.

The voice record block 211 stores the received conference call voice data in an address on the voice memory 212, which is set in advance by the CPU 201.

The conference block 209 also removes the receiver's voice signal from the mixed voice signal to produce a signal in which only the voices of others are mixed, and sends the resulting voice signal through a call path previously set by the CPU 201. Transfer to DSP 207.

The DSP 207 converts the voice signal received from the conference block 209 into the voice code method used by the terminal on the receiving side, and then transmits it to the packet processing block 205 again. According to the call processing information set in advance by 201, the voice signal is converted into a voice packet and then transmitted to the encryption block 203.

Receiving the voice packet, the encryption block 203 encrypts the voice packet based on the encryption master key information previously set by the CPU 201, and transmits the encrypted voice packet to the MAC & PHY processing block 204. .

Thereafter, the voice packet output from the VoIP add-on integrating device 200 via the MAC & PHY processing block 204 is sent to the receiving terminal through the packet switching network.

Although the present invention has been described in detail only with respect to the above-described embodiments, it will be apparent to those skilled in the art that the present invention may be modified or changed within the spirit and scope of the present invention, and such modifications or changes are within the scope of the present invention. will be.

1 shows an example of a network environment in which an embodiment of the present invention may be implemented.

2 is a block diagram illustrating an exemplary VoIP add-on integrating apparatus according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: private IP exchange (IP-PBX)

200: VoIP additional function integration device according to the present invention

201: CPU

203: encryption block

204 MAC & PHY Processing Block

205: packet processing block

207: DSP

209: Conference Block

210: voice playback block

211: voice record block

212 voice memory

213: switching block

Claims (9)

As a VoIP add-on integrator for private IP exchanges, MAC and PHY processing unit operable to network-connect with the IP exchanger and operable to transmit and receive IP packets to / from the IP exchanger, the IP packet including at least one of additional function request message packets, voice packets, and various control message packets. (MAC & PHY Processing Unit), A conference unit operable to provide a conference call add-on, A Voice Playing Unit operable to provide voice guidance and voice listening add-ons; A voice recording unit operable to provide a voice storage add-on, An encryption unit operable to provide a voice packet encryption additional function, A DSP unit operable to provide speech code conversion additional functions, Establish a communication path between at least one of the conference unit, the voice reproduction unit, the voice record unit, the encryption unit, and the DSP unit and the MAC and PHY processing unit based on the received additional function request message packet. Operable Control Including, VoIP add-on integration device for a private IP exchange. The method of claim 1, Connected to the control unit, the encryption unit, and the DSP unit, transmit and receive various control message packets including a call processing message to / from the control unit, extract a voice signal from the voice packet received from the encryption unit, and execute the DSP unit. And a packet processing unit operable to make a voice signal received from the DSP unit into a voice packet and transmit it to the encryption unit. The method of claim 2, The MAC and PHY Processing Unit (MAC & PHY Processing Unit) received from the IP exchange is an additional function request message packet is sent to the controller via the encryption unit and the packet processing unit, The additional function request message packet includes at least one of a conference call request message, a voice guidance request message, a voice listening request message, a voice storage request message, a codec conversion request message, and a voice packet encryption request message. VoIP add-on integration device for private IP exchange. The method of claim 3, If the add-on request message packet includes a conference call request message, The control unit controls a switching unit to establish a communication path between the conference unit and the MAC and PHY processing unit, The conference unit adjusts the gain of each voice signal received through the communication path, mixes all voice signals belonging to the same group, and then removes the voice signal of the receiver from the mixed voice signal, A VoIP add-on integrating apparatus for a private IP exchange, which generates a signal mixed with only the voices of others and transmits it through the communication path. The method of claim 3, When the additional function request message packet includes a voice guidance request message or a voice listening request message, The control unit controls a switching unit to set a communication path between the voice reproduction unit and the MAC and PHY processing unit, And the voice reproducing unit reads a voice signal from a voice memory and transmits the voice signal through the communication path. The method of claim 3, If the additional function request message packet includes a voice storage request message, The control unit controls a switching unit to set a communication path between the voice record unit and the MAC and PHY processing unit, And the voice record unit stores the voice signal received through the communication path in a designated storage space on a voice memory. The method of claim 3, If the additional function request message packet includes a voice code conversion request message, The control unit controls a switching unit to set a communication path between the DSP unit and the MAC and PHY processing unit, And the DSP unit converts the voice code of the voice signal received through the communication path and transmits the converted voice signal through the communication path. The method of claim 3, If the additional function request message packet includes a voice packet encryption request message, The control unit controls a switching unit to set a communication path between the DSP unit and the MAC and PHY processing unit, And the encryption unit encrypts or decrypts a voice packet received through the communication path and transmits an encrypted or decrypted voice packet through the communication path. The method according to any one of claims 3 to 7, And if the additional function request message packet does not include a voice packet encryption request message, the encryption unit performs no operation on the voice packet passing through it.

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