CN114995243B - A device for interconnecting a UAV ground station and a command system - Google Patents

Abstract

The invention provides an interconnection and intercommunication device for an unmanned aerial vehicle ground station and a command system. The device adopts a platform and ten unit system architectures, takes an all-IP system technical system as a core, provides interfaces such as a K interface, an E1 interface, an A interface, a remote transmission interface, FXS, FXO and the like besides an optical network interface, and can realize interconnection and intercommunication with a command system, so that the interconnection interfaces of the unmanned aerial vehicle ground station and the command system are normalized, standardized and generalized. The method is suitable for the interconnection and interworking scene of the unmanned aerial vehicle ground station and the command system.

Description

A device for interconnecting a UAV ground station and a command system

Technical Field

The present invention relates to the technical field of unmanned aerial vehicle ground stations, and in particular to an interconnection device between an unmanned aerial vehicle ground station and a command system, which is suitable for interconnection scenarios between unmanned aerial vehicle ground stations and command systems.

Background Art

In the existing UAV ground station technology, interconnection capability is an important capability of the UAV system, mainly including voice and data interconnection. Voice interconnection mainly includes voice communication within the ground station and voice calls between the ground station and the connected information nodes; data interconnection mainly realizes the reliable transmission of reconnaissance data, telemetry data, etc. with the command system. In order to achieve the interconnection between the ground station and the command system, the existing UAV ground station usually needs to integrate 7 types of equipment such as voice processing equipment, digital relay station, airborne station decoding unit, router, protective wall, switch, networking equipment, etc. The equipment cabinet needs to occupy at least 15U, there are many types of equipment, the cable connection is complex, and the integration is low.

Summary of the invention

The present invention provides an interconnection device between a UAV ground station and a command system. The device adopts a "one platform" and "ten units" system architecture, with a full IP system technology system as the core, and provides K interface, E1 interface, A interface, remote transmission interface, FXS, FXO and other interfaces in addition to optical and electrical network interfaces. Each interface can be interconnected with the command system, so that the interconnection interface between the UAV ground station and the command system is normalized, standardized and universal.

In order to achieve the above object, the technical solution adopted by the present invention is:

A device for interconnecting a ground station of an unmanned aerial vehicle with a command system, comprising a frame, a front panel, a rear panel, a fan and ten service units; the frame is welded by a left side panel, a right side panel, an upper cover plate and a lower bottom plate; the front panel provides panel indication, switch control and maintenance interface for the device; the rear panel is an external interface of the device, including an AC220V power supply and various service interfaces; the fan is a heat dissipation spare part, installed on the upper part of the frame; the ten service units are a power supply unit, a user interface unit, a radio interface unit, a wired interface unit, a security protection unit, a cluster service unit, an optical ring transmission unit, a time system service unit, a control switching unit and a network interface unit, wherein:

The power supply unit includes a power interface module and a fan, which is used to isolate and transform the power supply inside and outside the device, and provide power supply to each business unit and fan internally;

The user interface unit is used to implement networking control, user access control, voice service adaptation, and pre-processing of exchange routing information. It provides 2 FXS interfaces and 2 FXO interfaces.

Network control: Receive the configuration and query processing of the radio link by the control exchange unit to complete the control and management of the radio station; after completing the radio link information collection through the interaction with the radio interface information, send the radio link status information to the control exchange unit to realize the radio network interconnection;

User access control: By processing user signaling, it realizes the control of analog interface user on-hook and off-hook, dialing, ring current and signal tone, completes the conversion of analog second-line telephone access signaling and call primitives, and reports them to the control switching unit to realize user access control;

Voice service adaptation: adapt the PCM voice stream to RTP and report it to the control switching unit, which then completes the storage and forwarding of service information.

The radio interface unit is used to process 2-way E1 interface signals, 2-way K interface signals and data frame preprocessing, including:

E1 interface signal processing: receiving E1 line signals, completing the processing from E1 line signals to E1 data frames and then sending them to the user interface unit; receiving data frames sent by the user interface unit, completing the processing from E1 data frames to E1 interface signals and then sending them to the E1 line;

K interface signal processing: receiving K port line signals, completing K port line signal to K port data frame processing and then sending it to the user interface unit; receiving K port data frames sent by the user interface unit, completing data frame to K port signal processing and then sending it to the K port line;

The wired interface unit is used to implement the A interface signal processing function. Specifically, it receives the A interface line signal, completes the A interface line signal to A port data frame processing, and then sends it to the control switching unit; receives the data frame sent by the control switching unit, completes the A interface data frame to A interface signal processing, and then sends it to the A interface line;

The security protection unit is used to realize the network security function. Specifically, the security protection unit connects to the Ethernet switching bus in the device and obtains business data, completes the network access control, application protocol format check, intrusion detection, network audit, traffic monitoring, log and report protection functions of the business data, and sends the processed data back to the switching bus;

The cluster service unit is used to realize the cluster intercom function. Specifically, the cluster service unit realizes voice communication data transmission with the handheld cluster intercom through the RF interface of the connection device. At the same time, the cluster service unit obtains configuration data and voice service data through the Ethernet switching bus. The configuration data is used to complete the information configuration of the frequency, unicast number, and multicast group related to the cluster intercom function of this unit. The voice service data interacts with the external voice terminal of the device to realize voice communication;

The optical ring transmission unit is used to realize the optical ring network service data processing function. Specifically, the optical ring transmission unit receives the optical ring network service data signal through the device optical interface, completes the line signal to data frame processing and sends it to the control switching unit; receives the data frame sent by the control switching unit, completes the data frame to service data signal processing and sends it to the optical ring network service line;

The time synchronization service unit is used to realize the time synchronization function. Specifically, the time synchronization service unit connects to the differential Beidou antenna through the device's RF interface to obtain time and location information. After being solved and processed by the CPU on the time synchronization service unit, it sends NTP synchronization messages to the device's Ethernet switching bus to provide NTP timing function, and at the same time outputs differential positioning messages to the Ethernet switching bus to realize the positioning function;

The control switching unit is used to realize the unified coordination and scheduling of service boards, as well as the functions of routing management, service adaptation, call control, and parameter maintenance, among which:

Routing management: Adopting the full IPV4 routing system, the user interface unit, wired interface unit, and network interface unit can be controlled and managed for multiple interface routing information; the user interface unit, wired interface unit, and network interface unit report the link interface information and link status to the control switching unit, and the control switching unit starts the OFPF and RIP dynamic routing protocols according to the link interface information and link status, completes the learning of the entire network routing information, builds the core routing table, and realizes the comprehensive networking and routing optimization through optical fiber, wired, satellite, and radio transmission means;

Service adaptation: PCM, G.729, CVSD multi-mode voice service coding conversion is used to realize the intercommunication of voice terminal services of different users. After the control switching unit receives the RTP voice of the user interface unit, it implements different coding conversion through the service adaptation function module and then sends it to the user interface unit;

Call control: The call control module completes the matching and conversion of the user interface unit K-port signaling, the network interface unit SIP signaling, and the user interface unit simulated user signaling syntax and timing, and realizes call conversion and control between different interface units;

Parameter injection and maintenance: The control switching unit uses the embedded network management agent software to query, set and inject the working parameters of the device. In addition, the control switching unit configures the parameter injection and maintenance interface to the front panel of the device through an independent link, and uses a handheld terminal to inject parameters of the device one by one, so as to realize the rapid opening of the system.

The network interface unit is used to implement data exchange and Ethernet relay voice service adaptation, including:

Data exchange: Receive routing information sent by the control switching unit, build a fast forwarding table, and realize high-speed forwarding of IP data packets;

Ethernet relay voice service adaptation: Receives line Ethernet data frames, de-adapts the ATM voice cells it carries, constructs RTP protocol data packets, forwards them according to the destination information, receives RTP protocol data packets, adapts the voice data it carries, converts RTP protocol data packets into Ethernet data frames, and sends them to the line;

The user interface unit, radio interface unit, wired interface unit, trunking service unit, optical ring transmission unit, time system service unit, control switching unit, and network interface unit are interconnected and interoperable through an Ethernet switching bus to complete service data processing and control protocol data processing; wherein:

Service data processing: The user interface unit, wired interface unit, trunking service unit, and optical ring transmission unit complete the reception and transmission of line interface service data and convert it, and send it to the network interface unit, which realizes fast exchange and forwarding of IP data;

Control protocol data processing: The control protocol data of the user interface unit, wired interface unit, trunking service unit, optical ring transmission unit, time system service unit, and network interface unit are sent to the control switching unit for processing.

The beneficial effects of the above technical solution of the present invention are:

1. The present invention adopts the "multi-unit + universal VPX module" rack integration technology. Each unit replaces a device in the previous ground station. The types and quantity of ground station equipment using this device are reduced by 80% compared with those not using this device, solving the problem of many types and complex connection relationships of UAV ground station equipment.

2. The present invention adopts a "one platform" and "ten units" system architecture, all devices are highly integrated, and the operation is simpler and easier than before, which improves the operability and practicality of the UAV ground station. At the same time, it improves the lightweight, modular and universal level of the UAV ground station.

3. The present invention takes the full IP system technology system as the core. In addition to the optical and electrical network interfaces, it provides K interface, E1 interface, A interface, remote transmission interface, FXS, FXO and other interfaces. Each interface can be interconnected with the command system, so that the interconnection interface between the UAV ground station and the command system is normalized, standardized and universal.

4. The present invention integrates the routes generated by the OSPF protocol, BGP protocol, FRP protocol, TIRP protocol, and RSSP protocol, and realizes the optimal routing of different link types such as multi-service optical fiber/wired remote transmission, command system wireless LAN/regional broadband, high-speed data radio, and ultra-short wave radio, thereby greatly reducing the complexity of the system.

5. The present invention adopts multi-heterogeneous network voice communication technology and cooperates with the UAV ground station digital voice terminal to realize real-time voice communication between the UAV ground station operator and other aircraft in the air through the UAV data link. At the same time, the operator can also have real-time communication with ultra-short wave radio stations, high-speed radio stations, digital cluster relay stations, and analog second-line telephones.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of a device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a front panel of a device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of a rear panel of a device according to an embodiment of the present invention.

FIG. 4 is a functional block diagram of a device according to an embodiment of the present invention.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

In the existing UAV ground station technology, interoperability is an important capability of the UAV system, mainly including voice and data interoperability. Voice interoperability mainly includes voice communication within the ground station and voice calls between the ground station and the connected information nodes; data interoperability mainly realizes the reliable transmission of reconnaissance data, telemetry data, etc. with the command system.

This embodiment provides an interconnection device between a UAV ground station and a command system, including a frame, a front panel, a rear panel, a fan and ten service units; the frame is welded by a left panel, a right panel, an upper cover plate and a lower bottom plate, the front panel provides panel indication, switch control and maintenance interface for the device; the rear panel is an external interface of the device, including an AC220V power supply and various service interfaces; the fan is a heat dissipation spare part installed on the upper part of the frame; the ten service units are a power supply unit, a user interface unit, a radio interface unit, a wired interface unit, a security protection unit, a cluster service unit, an optical ring transmission unit, a time system service unit, a control switching unit and a network interface unit, wherein:

The power supply unit includes a power interface module and a fan, which is used to isolate and transform the power supply inside and outside the device, and provide power supply to each business unit and fan internally;

The user interface unit completes the networking control, user access control, voice service adaptation functions, realizes the pre-processing function of exchange routing information, and provides 2 FXS interfaces and 2 FXO interfaces to the outside, as described below:

1) Network control: The receiving control exchange unit configures and queries the radio link to complete the radio control management; after completing the radio link information collection through information interaction with the radio interface, the radio link status information is sent to the control exchange unit to realize the radio network interconnection.

2) User access control: By processing user signaling, the analog interface user's on-hook and off-hook, dialing, ringing current and signal tone control are realized. After completing the conversion of the access signaling and call primitive of the analog second-line telephone, it is reported to the control switching unit to realize user access control.

3) Voice service adaptation: The PCM voice stream is adapted to RTP and then reported to the control switching unit, which then completes the storage and forwarding of service information.

The radio interface unit completes the preprocessing functions of 2-way E1 interface signals, 2-way K interface signals and data frames, as described below:

1) E1 interface signal output: Receive E1 line signals, complete the processing from E1 line signals to E1 data frames, and then send them to the user interface unit; receive data frames sent by the user interface unit, complete the processing from E1 data frames to E1 interface signals, and then send them to the E1 line.

2) K interface signal processing: Receive K-port line signals, complete K-port line signal to K-port data frame processing, and then send it to the user interface unit; after receiving the K-port data frame sent by the user interface unit, complete the data frame to K-port signal processing, and then send it to the K-port line.

The wired interface unit completes the A interface signal processing function, as described below:

Receive the A interface line signal, complete the A interface line signal to A port data frame processing and send it to the control switching unit; receive the data frame sent by the switching control unit, complete the A interface data frame to A interface signal processing and send it to the A interface line.

The security protection unit completes the network security functions, as described below:

The security protection unit connects to the Ethernet switching bus in the device and obtains business data, completes network access control, application protocol format inspection, intrusion detection, network auditing, traffic monitoring, log and report protection functions for business data, and sends the processed data back to the switching bus.

The trunking service unit completes the trunking intercom function, as described below:

The cluster service unit realizes voice communication data transmission with the handheld cluster intercom through the RF interface of the connecting device. At the same time, the cluster service unit obtains configuration data and voice service data through the Ethernet switching bus. The configuration data is used to complete the configuration of the frequency, unicast number, multicast group and other information related to the cluster intercom function of this unit. The voice service data interacts with the external voice terminal of the device to realize voice communication.

The optical ring transmission unit completes the optical ring network service data processing function, as described below:

The optical ring transmission unit receives the optical ring network service data signal through the device optical interface, completes the line signal to data frame processing and sends it to the control switching unit; receives the data frame sent by the switching control unit, completes the data frame to service data signal processing and sends it to the optical ring network service line.

The time system business unit completes the time system functions, as described below:

The time system business unit connects to the differential Beidou antenna through the device's RF interface to obtain time and location information. After being solved and processed by the CPU on the time system business unit, it sends NTP timing messages to the device's Ethernet switching bus to provide NTP timing function. At the same time, it can output differential positioning messages to the Ethernet switching bus to realize the positioning function.

The control switching unit completes the unified coordination and scheduling of the service boards; routing management, service adaptation, and session control functions are the core parts of the dispatching and control of the ground station communication switching equipment, as described below:

1) Routing management: Adopting the full IPV4 routing system, the user interface unit, wired interface unit, and network interface unit can be controlled and managed. The user interface unit, wired interface unit, and network interface unit report the link interface information and link status to the switching control unit. The switching control unit starts the OFPF, RIP and other dynamic routing protocols according to the link interface information and link status, completes the learning of the entire network routing information, builds the core routing table, and realizes comprehensive networking and routing optimization through optical fiber, cable, satellite, radio and other transmission means;

2) Service Adaptation: PCM, G.729, CVSD multi-mode voice service coding conversion is used to realize the intercommunication of voice terminal services of different users. After the control switching unit receives the RTP voice of the user interface unit, it implements different coding conversion through the service adaptation function module and then sends it to the user interface unit;

3) Call control: The call control module completes the matching and conversion of the user interface unit K-port signaling, the network interface unit SIP signaling, and the user interface unit simulated user signaling syntax and timing, and realizes call conversion and control between different interface units;

4) Parameter injection and maintenance: The control switching unit in the device can query, set and inject the working parameters of the device through the embedded network management agent software. In addition, the control switching unit configures the parameter injection and maintenance interface to the front panel of the device through an independent link, and a handheld terminal can be used to inject parameters of the device one by one to realize the rapid opening of the system.

The network interface unit is used for data exchange and Ethernet relay voice service adaptation, as described below:

1) Data exchange: Receive the routing information sent by the control switching unit, build a fast forwarding table, and realize high-speed forwarding of IP data packets.

2) Service Adaptation: Receive the line Ethernet data frame, de-adapt the ATM voice cells it carries, construct the RTP protocol data message, forward it according to the destination information, accept the RTP protocol data message, adapt the voice data it carries, convert the RTP protocol data message into Ethernet data frame and send it to the line.

Furthermore, the user interface unit, the radio interface unit, the wired interface unit, the trunking service unit, the optical ring transmission unit, the time system service unit, the control switching unit, and the network interface unit are interconnected and interoperable through an Ethernet switching bus, as described in detail below:

1) Business data processing:

The user interface unit, wired interface unit, cluster service unit, optical ring transmission unit complete the line interface service data transmission and reception and conversion and send it to the network interface unit, and realize the rapid exchange and forwarding of IP data through the network interface unit.

2) Control protocol processing:

The control protocol data of the user interface unit, wired interface unit, cluster service unit, optical ring transmission unit, time system service unit and network interface unit are then sent to the control switching unit for processing.

Furthermore, the devices are networked through various transmission methods such as optical fiber, cable, high-speed data radio, and ultra-short wave radio. The network interface unit in the device provides 12 Gigabit electrical ports and 4 Gigabit optical ports to the outside, and cooperates with the control switching unit in the device to provide unicast routing protocol, multicast routing protocol, protocol maintenance, data forwarding, route redistribution, routing table management, MPLS and other capabilities. It supports Ethernet numbered and unnumbered routing, supports TIRP protocol, FRP protocol, OSPF protocol, BGP protocol and routing for comprehensive management, generates data forwarding routing tables according to unified strategies, guides data forwarding, and realizes multi-link comprehensive networking and effective route selection.

Furthermore, the device can communicate with the digital cluster repeater outside the device through the Ethernet interface brought out by the network interface unit inside the device. Both parties use the SIP protocol, which are physically IP channels and use standard RTP messages for data and signaling interaction, which can realize the access of external voice terminals and cluster repeaters of the device and voice services of external intercoms.

Furthermore, the device supports connecting no less than 5 voice terminals to the Ethernet switching bus through the Ethernet interface and completing the terminal registration process on the server side. The voice services of the voice terminals are sent to the cluster unit, radio interface unit, user interface unit, etc. through the Ethernet switching bus for processing and sent back to the switching bus, so as to realize calls with cluster walkie-talkies, communications with drone-mounted voice terminals, calls through ultra-short wave radios, and call services through high-speed radios.

The following is a more specific embodiment:

As shown in FIG1 , the communication network control device is a 4U high 19-inch rack-mounted device with an overall dimension of: width×height×depth=482.6×177×420 (unit: mm). The device is rack-mounted through a right-angle guide rail.

The whole machine is mainly composed of a frame, a front panel and a rear panel. The frame is welded by left and right side panels, an upper cover and a lower bottom plate. The left and right side panels and the upper cover are processed with heat dissipation fins, which not only reduces the weight but also improves the external heat exchange capacity of the whole machine. The front panel and the rear panel are fixed to the frame by captive screws. When the device is repaired, the front and rear panels can be flipped down by hinges and slide rails to facilitate the maintenance of the internal circuit units. The insertion method of each circuit unit in the chassis is vertical insertion. The upper cover and the lower bottom plate are guide rail groove structures on the inside of the chassis. Each circuit unit is inserted into the chassis through the guide rail groove. A total of nine circuit units and one power supply unit are installed. Each circuit unit and circuit module transfers heat to the chassis shell by conduction. A cooling fan is installed at the upper cover to enhance the heat dissipation capacity of the device.

As shown in Figure 2, the front panel consists of a power switch, indicator lights, parameter maintenance interface and service interface. The power switch is the power switch of the device. The upper position corresponds to the device power on, and the lower position corresponds to the device power off. The indicator lights "control, network, user, wired, halo, radio, security, time system" correspond to the service boards in the device respectively. The lights are on when the corresponding unit is working normally, and the lights are off when there is no card inserted, it is starting or there is a fault.

As shown in Figure 3, the rear panel mainly provides external connectors for the device, including network port, A port, remote transmission, analog, K port, antenna, E1 interface, etc.

The "ten business units" include power supply unit, user interface unit, radio interface unit, wired interface unit, security protection unit, cluster business unit, optical ring transmission unit, time system business unit, control switching unit and network interface unit.

The composition of the device units and the interconnection bus are shown in Figure 4. The power bus provides working power for each unit. The functional units exchange information through the Ethernet switching bus provided by the rack integration platform. The Ethernet switching bus transmits control data and service data. The control data mainly controls the interface parameters, interface status, signaling, and inter-board protocols between the switching unit and each unit. The service data are all data, audio, video, etc. carried by IP packets.

In summary, the present invention adopts a platform and ten-unit system architecture, with an all-IP system technology system as the core. In addition to optical and electrical network interfaces, it provides K interface, E1 interface, A interface, remote transmission interface, FXS, FXO and other interfaces. Each interface can be interconnected with the command system, so that the interconnection interface between the UAV ground station and the command system is normalized, standardized and universal, and is suitable for the interconnection scenario between the UAV ground station and the command system.

Claims (1)

1. A device for interconnecting an unmanned aerial vehicle ground station and a command system, characterized in that it includes a frame, a front panel, a rear panel, a fan and ten service units; the frame is welded by a left side panel, a right side panel, an upper cover plate and a lower bottom plate, the front panel provides panel indication, switch control and maintenance interface for the device; the rear panel is an external interface of the device, including an AC220V power supply and various service interfaces; the fan is a heat dissipation spare part installed on the upper part of the frame; the ten service units are a power supply unit, a user interface unit, a radio interface unit, a wired interface unit, a security protection unit, a cluster service unit, an optical ring transmission unit, a time system service unit, a control switching unit and a network interface unit, wherein: The power supply unit includes a power interface module and a fan, which is used to isolate and transform the power supply inside and outside the device, and provide power supply to each business unit and fan internally; The user interface unit is used to implement networking control, user access control, voice service adaptation, and pre-processing of exchange routing information. It provides 2 FXS interfaces and 2 FXO interfaces. Network control: Receive the configuration and query processing of the radio link by the control exchange unit to complete the control and management of the radio station; after completing the radio link information collection through the interaction with the radio interface information, send the radio link status information to the control exchange unit to realize the radio network interconnection; User access control: By processing user signaling, it realizes the control of analog interface user on-hook and off-hook, dialing, ring current and signal tone, completes the conversion of analog second-line telephone access signaling and call primitives, and reports them to the control switching unit to realize user access control; Voice service adaptation: adapt the PCM voice stream to RTP and report it to the control switching unit, which then completes the storage and forwarding of service information. The radio interface unit is used to process 2-way E1 interface signals, 2-way K interface signals and data frame preprocessing, including: E1 interface signal processing: receiving E1 line signals, completing the processing from E1 line signals to E1 data frames and then sending them to the user interface unit; receiving data frames sent by the user interface unit, completing the processing from E1 data frames to E1 interface signals and then sending them to the E1 line; K interface signal processing: receiving K port line signals, completing K port line signal to K port data frame processing and then sending it to the user interface unit; receiving K port data frames sent by the user interface unit, completing data frame to K port signal processing and then sending it to the K port line; The wired interface unit is used to implement the A interface signal processing function. Specifically, it receives the A interface line signal, completes the A interface line signal to A port data frame processing, and then sends it to the control switching unit; receives the data frame sent by the control switching unit, completes the A interface data frame to A interface signal processing, and then sends it to the A interface line; The security protection unit is used to realize the network security function. Specifically, the security protection unit connects to the Ethernet switching bus in the device and obtains business data, completes the network access control, application protocol format check, intrusion detection, network audit, traffic monitoring, log and report protection functions of the business data, and sends the processed data back to the switching bus; The cluster service unit is used to realize the cluster intercom function. Specifically, the cluster service unit realizes voice communication data transmission with the handheld cluster intercom through the RF interface of the connection device. At the same time, the cluster service unit obtains configuration data and voice service data through the Ethernet switching bus. The configuration data is used to complete the information configuration of the frequency, unicast number, and multicast group related to the cluster intercom function of this unit. The voice service data interacts with the external voice terminal of the device to realize voice communication; The optical ring transmission unit is used to realize the optical ring network service data processing function. Specifically, the optical ring transmission unit receives the optical ring network service data signal through the device optical interface, completes the line signal to data frame processing and sends it to the control switching unit; receives the data frame sent by the control switching unit, completes the data frame to service data signal processing and sends it to the optical ring network service line; The time synchronization service unit is used to realize the time synchronization function. Specifically, the time synchronization service unit connects to the differential Beidou antenna through the device's RF interface to obtain time and location information. After being solved and processed by the CPU on the time synchronization service unit, it sends NTP synchronization messages to the device's Ethernet switching bus to provide NTP timing function, and at the same time outputs differential positioning messages to the Ethernet switching bus to realize the positioning function; The control switching unit is used to realize the unified coordination and scheduling of service boards, as well as the functions of routing management, service adaptation, call control, and parameter maintenance, among which: Routing management: Adopting the full IPV4 routing system, the user interface unit, wired interface unit, and network interface unit can be controlled and managed for multiple interface routing information; the user interface unit, wired interface unit, and network interface unit report the link interface information and link status to the control switching unit, and the control switching unit starts the OFPF and RIP dynamic routing protocols according to the link interface information and link status, completes the learning of the entire network routing information, builds the core routing table, and realizes the comprehensive networking and routing optimization through optical fiber, wired, satellite, and radio transmission means; Service adaptation: PCM, G.729, CVSD multi-mode voice service coding conversion is used to realize the intercommunication of voice terminal services of different users. After the control switching unit receives the RTP voice of the user interface unit, it implements different coding conversion through the service adaptation function module and then sends it to the user interface unit; Call control: The call control module completes the matching and conversion of the user interface unit K-port signaling, the network interface unit SIP signaling, and the user interface unit simulated user signaling syntax and timing, and realizes call conversion and control between different interface units; Parameter injection and maintenance: The control switching unit uses the embedded network management agent software to query, set and inject the working parameters of the device. In addition, the control switching unit configures the parameter injection and maintenance interface to the front panel of the device through an independent link, and uses a handheld terminal to inject parameters of the device one by one, so as to realize the rapid opening of the system. The network interface unit is used to implement data exchange and Ethernet relay voice service adaptation, including: Data exchange: Receive routing information sent by the control switching unit, build a fast forwarding table, and realize high-speed forwarding of IP data packets; Ethernet relay voice service adaptation: Receives line Ethernet data frames, de-adapts the ATM voice cells it carries, constructs RTP protocol data packets, forwards them according to the destination information, receives RTP protocol data packets, adapts the voice data it carries, converts RTP protocol data packets into Ethernet data frames, and sends them to the line; The user interface unit, radio interface unit, wired interface unit, trunking service unit, optical ring transmission unit, time system service unit, control switching unit, and network interface unit are interconnected and interoperable through an Ethernet switching bus to complete service data processing and control protocol data processing; wherein: Service data processing: The user interface unit, wired interface unit, trunking service unit, and optical ring transmission unit complete the reception and transmission of line interface service data and convert it, and send it to the network interface unit, which realizes fast exchange and forwarding of IP data; Control protocol data processing: The control protocol data of the user interface unit, wired interface unit, trunking service unit, optical ring transmission unit, time system service unit, and network interface unit are sent to the control switching unit for processing.