IDM M9000B Communication Command and Dispatch System

The IDM M9000B communication command and dispatch system is a TDM communication command and dispatch system developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans). Centered on TDM time-slot switching, it can connect radio sets of different frequencies, formats, and types, trunking intercom, fixed-line telephones, magneto telephones, and satellite terminals to the same voice platform, achieving interconnection between heterogeneous wireless communication systems and wired networks. As a converged communication command and dispatch system built for emergency and military scenarios, the IDM M9000B communication command and dispatch system connects 48 radio sets or 120 telephone terminals in a standalone unit. Its integrated design eliminates the cascading of multiple gateways, and it can quickly form an emergency intercommunication platform in vehicle-mounted, fixed, portable, and mobile modes for scenarios such as position command for air defense forces and field troops, counter-terrorism and stability maintenance and emergency response, and flood and drought control and disaster relief, providing stable and reliable audio and video dispatching and converged voice dispatching capabilities for on-site command and dispatch.

The development background of the IDM M9000B communication command and dispatch system comes from the common shortcomings of existing dispatch equipment: wireless trunking dispatch and wired telephone dispatch are independent of each other, and IP-based dispatching exchanges rely on multiple cascaded gateways such as GOIP and ROIP, lacking integrated equipment; some dispatching exchanges simply stack multiple technologies together, resulting in bulky equipment, complex management, small capacity, and long software startup times, and making it difficult to support access modes such as 2100Hz in-band signaling and DCP signaling when connected to field military-grade telephones. Emergency command relies heavily on group conferences, and under the IP architecture, the more conference members there are, the greater the processor load and the worse the voice quality. These are exactly the occasions where the TDM time-slot switching architecture comes into play. Based on these pain points, Raytrans has applied the concepts of converged communication and converged dispatching throughout the unit design, giving this command and dispatch system stronger adaptability in emergency and military communication scenarios.

Key Specifications at a Glance: 48 radio channels · 120 telephone terminals · TDM never busy · 11~15V DC power supply · one unit integrating HF, VHF/UHF, trunking, and satellite · 32 conference calls

What kind of equipment is the IDM M9000B communication command and dispatch system?

The IDM M9000B communication command and dispatch system is an integrated dispatch host that concentrates switching, interfaces, and dispatch control in one chassis. The host is equipped with a main control and switching card and 12 user card slots. The user card slots can be mixed with VHF radio interface cards, FXS subscriber telephone cards, FXO central office telephone cards, Hot hotline phone cards, and MAG magneto telephone cards, and all types of interface cards are hot-swappable; system status and user status are displayed by multi-color indicator LEDs, and system settings and function operations are assisted by an LCD screen. As a mature converged communication command and dispatch system, the device also has good scalability in scenarios such as audio and video dispatching and product showcase.

Figure 1: Appearance of the IDM M9000B communication command and dispatch system host — front panel user card slots and status indicator LEDs

The dispatch control of the IDM M9000B communication command and dispatch system is based on TDM time-slot switching. VoIP channels are provided for voice transmission and the access segment, while the determinism of switching remains in the dispatch core, and remote access can be flexibly enabled over wireless IP networks; one host simultaneously provides multiple interfaces such as radio, telephone, magneto, satellite, and IP, so multi-format communication resources do not need to be distributed across multiple single-format gateway devices, fully reflecting the design concepts of converged communication and converged dispatching.

What on-site problems does the integrated design solve?

The conclusion first: the four design features of the IDM M9000B communication command and dispatch system correspond respectively to four types of problems — slow on-site deployment, busy voice channels, loss of contact due to a single-point fiber break, and difficulty in obtaining power in the field. The correspondence between features and problems is shown in the table below.

The specific meaning of the integrated design is: dispatching switching, user card slots, and communication interfaces are delivered in the same chassis. For capacity expansion, simply insert the corresponding interface card into a free card slot, without having to purchase a separate gateway for each type of terminal and then cascade them one by one; for field operations, the complete unit is transported, and it can be powered on for dispatching once connected to a battery or vehicle power. The three features of TDM time-slot switching, optical fiber ring networks, and AC and DC dual power supply are elaborated separately below.

Why is the TDM communication command and dispatch system suitable for emergency command and high-security scenarios?

The TDM communication command and dispatch system is suitable for emergency command and high-security scenarios because of reserved bandwidth and deterministic switching. The dispatch control of the IDM M9000B communication command and dispatch system is based on TDM time-slot switching. Each call occupies a fixed 64K time slot in the switching matrix, so voice does not queue and channels are never busy, with strong anti-interference capability and low voice latency; traditional voice interface cards come in many types, switching response is fast, hardware voice conference room capacity is large, and all system modules start quickly, making it suitable for command occasions requiring rapid deployment.

IP dispatching in important fields usually requires the IP transmission network to provide guarantees such as port traffic limiting and VLAN partitioning, and basically depends on an IP private network; transmitting voice over an office network without IP transmission planning still poses security hazards. IP softswitch is susceptible to IP broadcast storms or other burst IP traffic, whereas the IDM M9000B communication command and dispatch system keeps the determinism of time-slot switching in the dispatch core and uses VoIP only as an access channel, balancing reliability and deployment flexibility, and remains the preferred product in application fields with high security requirements.

Knowledge Block: Differences Between TDM Dispatching and IP Softswitch

The differences between TDM dispatching and IP softswitch are mainly reflected in the switching mechanism and network dependency. The table below compares the IDM M9000B communication command and dispatch system (TDM time-slot switching) with common IP softswitch dispatch systems, item by item according to the dimensions of concern in dispatch services, under the applicable conditions of private networks and emergency command scenarios.

From the comparison, the advantages of TDM time-slot switching are concentrated in latency determinism and resistance to burst traffic, while the advantage of IP softswitch lies in the universality of terminal access; the IDM M9000B communication command and dispatch system combines the two, with dispatch control running over TDM time-slot switching and VoIP channels retained on the access side, balancing the security requirements of a private network with access flexibility.

Which Terminals and Trunk Interfaces Does IDM M9000B Support?

The IDM M9000B communication command and dispatch system can be fitted with a WG300 card, providing 120 channels of 64K PCM voice (FXO, FXS, E&M voice, MAG, etc.), and also provides radio interface and VHF radio interface to meet multi-unit control standards, plus a dispatch console Ethernet interface and 2 E1 interfaces for No.1, SS7 and PRI signaling access; the E1 interfaces can also be used to connect PCM expansion subscriber interface channels. Trunk and subscriber interfaces can be flexibly selected according to on-site network conditions.

Telephones and wired intercom terminals can be connected directly to FXS subscriber interfaces, and outside lines can also access dispatching resources on the IDM M9000B communication command and dispatch system through FXO interfaces, enabling outside lines to listen on VHF radio interfaces. FXS subscriber interfaces connect to ordinary telephones, PTT intercom terminals and the like, and can also be transmitted over PCM to more distant operating sites, extending dispatch coverage.

Figure 2: IDM M9000B Direct-Connected Terminal Diagram — Direct Access of Telephones and PTT Terminals

Which Communication Media and Networks Does IDM M9000B Support?

The IDM M9000B converged communication command and dispatch system can aggregate multiple communication media — including fixed-line telephone networks, cellular mobile communication networks, the Internet (IP) networks, wireless local area networks (WLAN), trunking mobile communication systems and satellite communication systems — onto the same dispatching platform, achieving collaborative dispatch voice intercommunication between public and private networks, wired and wireless, and across regions and departments. It is a converged communication command and dispatch system designed for multi-network convergence scenarios. See the figure below for the audio and video dispatching and product showcase communication media diagram; the system provides unified voice access for different transmission media, so dispatchers do not need to distinguish whether a remote user is on an optical fiber, field wire, wireless link or IP channel.

Figure 3: IDM M9000B Communication Media Diagram — Wired, Wireless, IP and Satellite Media Access

On the IP side, the IDM M9000B converged dispatching system connects IP phones and other access terminals through the WAN port's electrical interface (RJ45) or optical interface (FC), and supports the transmission of radio signals (RoIP) and voice signals (VoIP) over IP networks. The combination of TDM time slots for command and dispatch control and IP channels for the access segment allows the system to quickly enable remote voice channels over wireless IP networks, without waiting for IP private network planning to be completed.

Figure 4: Networking Diagram of IDM M9000B Connected to IP Network Access Terminals

How Many Radio and Telephone Channels Can the IDM M9000B Communication Command and Dispatch System Handle?

The overall capacity of the IDM M9000B command and dispatch system centers on the main control and switching card and the user card slots: the main control and switching card can provide conference calls, supporting 32 simultaneous conferences and 64 simultaneous DTMF detections, and provides 2 groups of E1 interfaces on the card, which can be configured as China No.7 signaling or PRI signaling, or as 60 subscriber interfaces. The unit provides 12 user card slots, and each slot can be fitted with a VHF interface card, FXS subscriber telephone card, FXO central office telephone card, Hot hotline phone card or MAG magneto telephone card; when a VHF radio interface card is fitted, each card provides 4 channels, and when FXS, FXO or MAG cards are fitted, each card provides 10 channels. The main capacity and configuration parameters are shown in the table below.

What Operating Modes Do Radio Sets and Wireless Intercom Have?

The IDM M9000B command and dispatch system provides 4 basic operating modes for intercommunication between VHF radio sets and telephone terminals, and in practice the PA mode can be combined with the other modes. In multi-party conferencing mode, each VHF radio corresponds to a conference number, and listening telephones dial in to the conference room for free intercom; in ordinary telephone intercom mode, a telephone dials the radio access number to listen, and presses the flash key or hook switch to obtain a 20-second talk right (the system default is 20 seconds and is configurable); in PTT terminal intercom mode, the terminal normally listens and presses the PTT key to speak, with the speaking time determined by the terminal; in PA mode, the VHF radio sound is broadcast one-way to all telephones that have joined listening.

Access control of wireless channels supports 3 modes: audio interfaces with PTT function preferentially use PTT control mode when interfacing with radio sets and trunking interfaces; audio terminals without PTT function (such as conference microphones) use DSP volume control mode, controlling the receive/transmit of the wireless interface by dynamically monitoring the sound level; telephones and mobile phones can also send commands to the multimedia dispatching exchange through the dual-tone multi-frequency (DTMF) keyboard to control the receive/transmit of the wireless interface, and one control mode can be selected for each wireless interface.

How Does the IDM M9000B Form a Network with Raytrans Transmission and Access Devices and Dispatch Consoles?

Through E1, PCM and optical transmission links, the IDM M9000B converged communication command and dispatch system can cascade with Raytrans' own transmission and access devices to extend dispatch voice channels to remote stations. The E1 interface can serve as No.1, SS7 or PRI signaling trunk, or connect PCM to expand subscriber interface channels, so that dispatching resources extend along the transmission network to remote telephones, intercom terminals and radio sets, forming a command network with centralized scheduling and distributed access.

Figure 5: Networking diagram of the IDM M9000B connected to Raytrans transmission and access devices

In terms of coordination with dispatch consoles, the IDM M9000B command and dispatch system supports fiber-optic networking with various Raytrans TDM dispatch consoles, and all command operator seats share the same dispatching resource; the command and dispatch core is still implemented through TDM time-slot switching, so voice latency between multiple TDM dispatch consoles is low and conference quality is consistent, making it suitable for collaborative command across multiple command posts in different locations.

Figure 6: Diagram of fiber-optic networking between the IDM M9000B and various Raytrans TDM dispatch consoles

The IDM M9000B converged dispatching system can also work with the IDM MCC IP keyboard dispatch console to complete intercom dispatching. The IP keyboard dispatch console is connected to the system through an Ethernet switch, allowing flexible installation locations. The dispatcher initiates an intercom on the IP keyboard dispatch console, and the system bridges the radio voice channel with the dispatch console voice channel, enabling one-touch radio intercom command.

Figure 7: Diagram 1 of the intercom process between the IDM M9000B and the IDM MCC IP keyboard dispatch console

Figure 8: Diagram 2 of the intercom process between the IDM M9000B and the IDM MCC IP keyboard dispatch console

In addition, the IDM M9000B converged communication command and dispatch system supports networking with various Raytrans IP dispatch consoles. The dispatch console can be deployed over any IP channel, and both wired and wireless radio users can be incorporated into a unified dispatch interface, so additional operator seats are not restricted by the equipment room location.

Figure 9: Diagram of networking between the IDM M9000B and various Raytrans IP dispatch consoles

How Do Multi-Unit Interconnection, Cascading Capacity Expansion and Optical Fiber Ring Networks Expand Capacity?

The IDM M9000 series communication command and dispatch system supports multi-unit networking. Each device can be connected to other devices of the same series through twisted pair, E1, or IP routing. A single unit can connect 48 radio sets or 120 telephone terminals, and can connect 60 channels of intercom terminals (including local-end and remote-end audio terminals). The number of same-class devices that can be connected at the remote end of the IDM M9000C depends on the number of trunk ports; with two E1 ports configured, no more than 110 channels of loop-start trunk FXO ports are supported. Multi-unit networking is suitable for echeloned command systems with multiple sites and multiple detachments. Each node device operates independently while being interconnected, giving full play to the advantages of audio and video dispatching and converged communication.

Figure 10: IDM M9000 Series Communication Command and Dispatch System Multi-Unit Networking Application Topology Diagram

When radio capacity needs to be expanded, the IDM M9000 series can perform multi-unit cascading capacity expansion through E1: the radio interface card provides 4-channel interfaces, and each E1 interface can expand 30 channels of radio interfaces. A device used as an expansion cascade only serves as a PCM expansion interface, no longer providing dispatching switching functions, and has no operating panel, resulting in lower capacity expansion cost and maintenance complexity.

Figure 11: IDM M9000 Series Multi-Unit E1 Cascading Capacity Expansion Networking Diagram

In post deployment scenarios, the IDM M9000 series can implement audio and video surveillance command through an optical fiber ring network, providing access to 120 channels of wired and wireless systems. The advantage of the ring network is that a fiber break at some point in the middle does not affect normal communication; a call is connected as soon as the handset is lifted at the remote end, and images are displayed synchronously. PA announcements and transfers can be made to each post, and telephones and trunking intercoms can monitor simultaneously, achieving a combination of mobile posts and fixed posts. The system supports 8 optical fiber rings, with every two rings sharing 30 channels of telephone. The ring network plug-in card is the IDM MPconv card, and the remote end connects to IDM NTD421 devices.

Figure 12: IDM M9000 Series Optical Fiber Ring Network Audio and Video Post Deployment System Networking Diagram

What Command and Dispatch Functions Does the System Provide?

The core functions of the IDM M9000B communication command and dispatch system cover the complete chain from interface access to command operations. The specific role of each function is shown in the table below.

What Are the Features of the TDM-Based Hardware Design?

What Dispatch Operations Can the Dispatch Console Software Perform?

The dispatch console software of the IDM M9000B communication command and dispatch system organizes operating functions according to command operations, covering call control, PA announcements, trunking intercom and emergency management. As the core operating interface of the converged communication command and dispatch system, its specific audio and video dispatching and command and dispatch capabilities are shown in the table below.

The multimedia interface and equipment form factor examples of the dispatch console are shown in the following figures. The dispatcher completes daily operations such as click-to-call, status viewing and conference organization through the graphical operator seat, fully demonstrating the product showcase effect of converged dispatching and audio and video dispatching.

Figure 13: Example 1 of the IDM M9000B companion dispatch console introduction interface

Figure 14: Example 2 of the IDM M9000B companion dispatch console introduction interface

Figure 15: Example 3 of the IDM M9000B companion dispatch console introduction interface

Figure 16: Example 4 of the IDM M9000B companion dispatch console introduction interface

Figure 17: Example 5 of the IDM M9000B companion dispatch console introduction interface

The IDM M9000B communication command and dispatch system can be equipped with a variety of Raytrans dispatch console models, and positions such as the command center, duty console and mobile command can be selected as required: the IDM-MCC21 multimedia dispatch console is suitable for multimedia audio and video command operator seats, the IDM-MCC12 multimedia dispatch console is suitable for routine audio and video dispatching, the IDM-MCC10 portable dispatch console is easy to carry in vehicles and in the field, the IDM-MCC telephone-line dispatch console accesses the system over a telephone line, the IDM-MCC Danish-key IP audio dispatch console provides IP audio Danish-key operation, and the IDM-MCC7 multi-function dispatch console integrates multiple dispatching operations. As a professional command and dispatch system manufacturer, Raytrans can provide complete converged communication command and dispatch system selection support for military emergency communications vehicle solutions and government private network optical fiber communication solutions.

Figure 18: IDM-MCC21 multimedia dispatch console — multimedia audio and video command operator seat

Figure 19: IDM-MCC12 multimedia dispatch console — routine audio and video dispatching seat

Figure 20: IDM-MCC10 portable dispatch console — vehicle-mounted and field mobile command

Figure 21: IDM-MCC telephone-line dispatch console — keyboard dispatch console accessed over a telephone line

Figure 22: IDM-MCC Danish-key IP audio dispatch console — IP audio operation seat

Figure 23: IDM-MCC7 multi-function dispatch console — multi-function integrated dispatching seat

What Are the Roles of a SIP Magneto Gateway and a SIP Telephone Access Gateway?

In the IDM M9000B communication command and dispatch system, a SIP magneto telephone access gateway (IDM-MAGgate) is required between the IP network and magneto telephones to complete interface conversion and meet the SIP protocol standard. The IDM-MAGgate telephone gateway provides 2 magneto telephone interfaces and supports line fault detection; the Ethernet electrical interface is a 10/100BASE-T full-duplex, half-duplex adaptive RJ45 connector, compliant with IEEE 802.3, 802.1P and 802.1Q; the Ethernet optical interface is 10/100BASE-FX with an FC connector. Through this gateway, remote field magneto telephones can access the IDM M9000B dispatching platform over the IP network, realizing long-distance extension of magneto telephones and providing reliable converged communication access assurance for military emergency communications vehicle solutions.

Figure 24: Appearance of the IDM-MAGgate single-channel IP magneto gateway

Figure 25: Front appearance of the IDM-MAGgate dual-channel IP magneto gateway

Figure 26: Rear interfaces of the IDM-MAGgate dual-channel IP magneto gateway

In the IDM M9000B communication command and dispatch system, conversion between the IP network and analog telephones is completed by the IDM IAD02 integrated access gateway, which also meets the SIP protocol standard and can interconnect with standard SIP softswitch systems, providing VoIP and FoIP solutions for carriers, enterprises and residential community users. The IDM IAD02 provides 1 WAN port and 4 LAN ports; the WAN port supports an electrical port (RJ45) and an optical port (FC), and in optical interface form it can intercommunicate with a 100M media converter; it provides 2 analog telephone interfaces (FXS) and 1 escape interface (FXO), where one telephone can dial "0" to reach the PSTN (or the PSTN connection mode can be set through the network management system), and when power fails this telephone automatically connects to the PSTN network, ensuring that basic telephone service remains available after a power failure. This gateway works together with the multimedia dispatching exchange and can effectively support the implementation of converged dispatching and command and dispatch services in government private network optical fiber communication solutions.

Figure 27: Appearance of the IDM IAD02 integrated access gateway — SIP telephone access gateway

Figure 28: Rear interfaces of the IDM IAD02 integrated access gateway

Figure 29: Side interfaces of the IDM IAD02 integrated access gateway

How Are Audio and Video Collaborative Dispatching and Video Transmission Implemented?

The IDM-MCC command and dispatch system can achieve coordinated audio and video dispatching, binding the telephone number or the ID number of a wireless radio set with the corresponding video, so that the sound and image of the target area can be displayed synchronously, and the dispatcher can view audio and video dispatching information synchronously on the IDM MCC dispatch console, realizing efficient audio and video dispatching. Video transmission is divided into two modes: IP private network video transmission and IP public network video transmission. The IP private network has sufficient bandwidth and can transmit high definition images; the IP public network uses WiFi access, and a portable video terminal can directly insert a SIM card, or can be equipped with a wired-to-WiFi wireless router, supporting 3G and 4G access from the three major carriers. In private network scenarios, wireless bridges in the 450M, 900M, 2.4G and 5.8G frequency bands can be used for coverage; the 450M COFDM wireless bridge supports non-line-of-sight (NLOS) long-distance transmission (1080km) and has strong penetration capability, while the 900M wireless bridge has non-line-of-sight transmission capability and a line-of-sight (LOS) transmission range of 35km; for different environments such as airports and firefighting, wireless bridges should be selected according to coverage distance and bandwidth requirements. As one of the key capabilities of the converged communication command and dispatch system, audio and video dispatching makes command and dispatch more intuitive and efficient.

Figure 30: Appearance of the portable video terminal — SIM card insertion supports IP public network video input

Figure 31: Field application example of the portable video terminal — audio and video collaborative dispatching scenario

Figure 32: Application diagram of the portable video terminal and system interfaces — audio and video input for mobile positions

Board and Interface Details: VHF Radio Interface Card and Trunking Control Card

The audio signal of the VHF radio interface card is a 600Ω balanced output or input, adjustable from -30dBm to +10dBm. The VHF radio control signal PTT is normally a positive DC voltage to ground, and the positive voltage is grounded when activated. When VHF equipment is connected to access equipment, the interface standard requires E&M signaling of Type II or Type V, and must comply with China's communications industry standard D610-93. Air traffic control VHF interfaces also require that line transmission bit errors do not affect radio operation, E1 line loopback alarms and release, multiple E&M interfaces controlling the same radio without mutual interference, and VHF radio continuous transmission time not exceeding 2 minutes. When multiple PCM equipment units control the same VHF interface, different equipment may have different power supply voltages and different E&M control circuits. The E&M interface of the IDM M9000B communication command and dispatch system adopts voltage-difference threshold redundancy or anti-backfeed components to prevent false operation of the control line.

Figure 33: IDM M9000B Board Introduction — VHF Radio Interface and E&M Signaling Access Diagram

The trunking control card is similar to the VHF interface card, and both belong to the E&M category of interfaces. Trunking radio sets are numerous in type and diverse in interface voltage. The trunking control card adopts a design that distinguishes interface voltage polarity but not voltage magnitude, making it compatible with a variety of trunking radio set interfaces. The IDM M9000B communication command and dispatch system also employs line signaling filtering and port voltage difference elimination modules to ensure stable trunking and radio control signals.

Figure 34: Trunking Control Card Physical View and Interface Example — Multi-Format Trunking Radio Set Access

Figure 35: Application Example of Trunking Control Card Adapting to Interfaces of Different Trunking Radio Set Formats

The complete IDM M9000B communication command and dispatch system consists of a main unit, VHF and trunking interface boards, and supporting devices such as dispatch consoles, SIP gateways, and video terminals. The IDM-MCC21 multimedia dispatch console can serve as a typical supporting terminal for command center operator seats, working in coordination with the main unit.

Figure 36: IDM-MCC21 Multimedia Dispatch Console Live Photo — Command Center Multimedia Dispatch Terminal

Typical Application Scenarios

Air Defense Force and Field Army Position Command

Air defense force and field army position command has high requirements for portability, power supply adaptability, and multi-format access capability. The IDM M9000B communication command and dispatch system is small in size, can carry its own battery, is powered by 1115V DC, can use a lightweight rechargeable battery or vehicle power, and can also connect to 110V220V AC power. It is suitable for field operations and rapid field deployment, and can be powered on for dispatch immediately upon arrival. The system can be used for air defense force position command in combat, training and exercise missions, with a standalone unit accessing 48 radio sets and 120 telephone terminals.

Magneto telephones and military-grade telephones in position communications can be accessed via ordinary magneto interfaces or 2100Hz magneto interfaces. HF and VHF radio sets and trunking intercom are accessed via VHF radio interface cards and trunking control cards, with a single device simultaneously integrating HF, VHF, trunking, and satellite formats. Multiple devices can be networked via twisted pair, E1, or IP routing. When greater radio capacity is needed, E1 cascading capacity expansion is used, with each E1 interface expanding 30 radio interfaces, suitable for position command and multi-detachment echeloned command systems. Such scenarios are also typical application directions for military emergency communications vehicle solutions, in which the converged communication command and dispatch system plays a core role in multi-format aggregation and unified command and dispatch.

Counter-Terrorism and Stability Maintenance and Emergency Response Mobile Teams

Counter-terrorism and stability maintenance and emergency response missions require mobile teams to rapidly establish on-site command in unfamiliar areas. The IDM M9000B communication command and dispatch system can be deployed in vehicle-mounted and portable modes, connecting 350M and 800M trunking intercom, HF radio sets, VHF radio sets, satellite phones, and fixed-line telephones to the same voice platform. Intercoms of different frequency bands, different models, and different formats (digital/analog) can all complete talk right control and trunking intercom on the same dispatch interface.

The system is based on TDM time-slot switching, with each call occupying a fixed 64K time slot, reserved bandwidth, and never meeting a busy line. It is not affected by IP broadcast storms and burst traffic, has low voice latency, and on-site voice channels do not queue. One-touch direct dispatch and operations such as group call, talkgroup call, and conference can be completed with one touch. Commanders can initiate group command directly from the dispatch console, and cross-department and cross-region collaborative voice channels converge into the same command operator seat. The equipment supports 8 optical fiber ring networks, and if a fiber at some point in the middle is broken, normal communication is not affected, making it convenient for deployment between temporary command posts. This type of converged dispatching capability is equally applicable to government private network optical fiber communication solutions, achieving stable interconnection of cross-region command and dispatch systems through the combination of optical fiber ring networks and IP routing.

Flood Control and Drought Relief and Disaster Relief Emergency Command Center

Flood control and drought relief and disaster relief emergency command centers face sites with network outage, power failure, and blocked roads, where communication must be established immediately upon arrival. The IDM M9000B communication command and dispatch system can form emergency intercommunication platforms in vehicle-mounted, fixed, portable, and mobile modes, converging wired telephones, trunking intercom, HF radio sets, and satellite terminals onto the same command platform, with a standalone unit accessing 48 radio sets or 120 telephone terminals.

Pre-defined plans for flood control, drought relief, explosions, fires, and other events can be edited in advance. When an event occurs, clicking the plan button on the dispatch console can automatically trigger sound reinforcement broadcast alarms, automatically initiate conferences with the responsible persons, and automatically send incident short messages (SMS). The equipment is powered by dual-channel 1115V DC and 110V220V AC power supplies. When there is no stable mains power, a rechargeable battery or vehicle power can be used. It is small in size and easy to carry in a vehicle, suitable for field deployment and quick deployment. As a professional command and dispatch system manufacturer, Raytrans continues to provide converged communication and multimedia dispatching exchange products for various emergency scenarios, helping command and dispatch systems remain connected under extreme conditions.

Selection and Deployment Recommendations

The IDM M9000B communication command and dispatch system is suitable for group command scenarios that require unified dispatching of multi-format radio sets, trunking intercom, wired telephones, and IP terminals. How field army position command communications are networked, how counter-terrorism and stability maintenance mobile teams incorporate intercoms of different formats into the same operator seat, and how flood control and drought relief emergency command centers enable one-touch plan initiation can all be checked item by item according to the list below. During deployment, select interface cards and supporting devices according to the number of radio channels, number of telephone channels, and number of remote stations: for single-point dispatch within 48 radio channels or 120 telephone channels, a single main unit can be selected; for cross-region multi-point command, multi-unit networking can be done via twisted pair, E1, or IP routing, and when greater radio capacity is needed, E1 cascading capacity expansion is used, with each E1 interface expanding 30 radio interfaces; when long-distance extension of magneto telephones or analog telephones is needed, IDM-MAGgate or IDM IAD02 gateways are optionally configured; when ring network video post deployment and mobile video inspection are needed, optical fiber ring networks and portable video terminals are optionally configured. In terms of power supply, the main unit supports 1115V DC and 110V220V AC, and can be used in vehicle-mounted, portable battery, and mains power scenarios.

During selection, three capabilities should be checked with emphasis: first, access capacity — whether a standalone unit's 48 radio channels and 120 telephone terminals can cover the current phase of services, with 2 E1 interfaces reserved as expansion margin; second, architecture reliability — whether the reserved bandwidth and never-busy-line characteristics of TDM time-slot switching match on-site requirements for channel determinism and resistance to IP broadcast storms, and private networks with high security levels should especially retain deterministic switching in the dispatch core; third, networking and deployment conditions — for multi-site, long-distance post deployment projects, the maximum number of rings and breakpoint self-healing capability of the optical fiber ring network should be checked, while for field, vehicle-mounted, and temporary command posts, the adaptability of 1115V DC power supply, built-in battery, and 110V220V AC dual power supply should be checked. The interface board combination, maximum number of conference channels, and engineering configuration parameters of the IDM M9000B TDM communication command and dispatch system are not yet recorded in the knowledge base. Please refer to the manufacturer's technical documentation and commercial confirmation. To confirm interface configuration, networking solution, and pricing information, please contact Beijing Ruiguang Jiyuan Digital Technology Co., Ltd.