IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment
4xE1 cross-connect, 30-channel 64K, 15 card slots,
The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment is an integrated service platform that combines 64K narrowband service access, PCM multiplexing, and 64K time-slot cross-connection. The IDM MAP4E1-30 is mainly used for service access and cross-connection at the access layer of a data communication network. It provides complete synchronous timing functions and non-blocking cross-connection at the 64K level across 4 E1 channels, and can simultaneously provide 30 channels of 64K services, including telephone, magneto telephone, common battery telephone, and V.24 data services.
The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment is an integrated service platform that combines 64K narrowband service access, PCM multiplexing, and 64K time-slot cross-connection in one unit. Developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd., it is used for service access and cross-connection at the access layer of a data communication network. As a 4xE1 integrated service cross-connect multiplexing equipment, the IDM MAP4E1-30 provides non-blocking cross-connection at 64K granularity across 4 E1 channels within a 19-inch 1U chassis. The main unit can provide 30 channels of 64K services, covering telephone, magneto telephone, common battery telephone, and V.24 data services. 4xE1 cross-connection, 30-channel 64K service access, and 15 service card slots are all housed in a single unit, so access and scheduling are completed by one device, and an access node no longer needs to cascade a multiplexer and a cross-connect device. This PCM equipment performs all the access and cross-connection capabilities covered in the product showcase on the same platform. As an integrated service access device, its 64K time-slot cross-connection capability is tightly integrated with the PCM multiplexing architecture, so a single time-slot cross-connect equipment can take on the scheduling role of an access node.
The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment provides complete synchronous timing functions, supplying a unified clock reference for E1 channels and subscriber interfaces. The 4 E1 groups can form point-to-point, chain network, and star network topologies, and the networking approach can be selected as required when the site distribution changes. The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment offers serial port network management or Ethernet SNMP network management, supports AC 220 V or DC -48 V power supply modes, and operates at an operating temperature of -10℃~+50℃, making it suitable for deployment at access nodes of electric power private networks, rail transit communication, and military and government private networks. Around this platform, Raytrans can provide government private network optical fiber communication solutions, military emergency communications vehicle solutions, and smart mining communication solutions, deploying the 4xE1 integrated service cross-connect multiplexing equipment at various private network access nodes and using 64K time-slot cross-connection to achieve flexible service scheduling.
Key Specifications at a Glance: 4xE1 cross-connection · 30-channel 64K services · 15 card slots · dual power supply optional · 2.048Mbps E1 · -10℃~+50℃
Figure 1: Front view and operating indicator LEDs of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment
What Kind of Device Is a 4xE1 Integrated Service Cross-Connect Multiplexing Equipment?
A 4xE1 integrated service cross-connect multiplexing equipment is an access and cross-connect integrated PCM equipment that uses 64K time slots as the scheduling granularity: it accesses 4 E1 channels on one side and provides voice channel and data interfaces through service cards on the other. After services enter the device, they are uniformly split into 64K time slots and then allocated to designated time slots of the target E1 channel according to the configuration. All time slots of the 4 E1 channels can participate in cross-connection, and any input time slot can be scheduled to any output time slot without connections competing for matrix resources, so existing services are not affected when circuits are added or adjusted.
The core value of the integrated service cross-connect multiplexing equipment lies in pushing cross-connection scheduling capability down to the access layer. Telephones and data at the site side do not need to be aggregated to the central equipment room before scheduling; time slot allocation can be completed locally. The 4 E1 channels can form point-to-point, chain network, and star network topologies, and the networking approach is adjusted accordingly when the site distribution changes. There are 15 service card slots, each card supporting up to two services, so a site can expand the types and number of interfaces by configuring cards according to the on-site service list, and cabinet space and supporting power supply are reduced accordingly.
What Services and Interfaces Can the IDM MAP4E1-30 Access?
The main unit of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment can provide 30 channels of 64K (or N×64K) user narrowband service access. Voice and data are accessed in a mixed manner within the same PCM equipment and then allocated to the target E1 time slots by the 64K cross-connect matrix. Voice channel interfaces can be FXO central office automatic telephones, FXS remote automatic telephones, and MAG magneto telephones; data services include V.24/RS232/RS485/RS422, X.50/X.58, codirectional 64K, V.35/V.36 with Nx64K bandwidth, and Ethernet bridge.
Interface/Service Type | Specific Form and Specifications | Typical Carried Services |
|---|---|---|
FXO central office automatic telephone | Switch-side voice channel interface | SPC exchange trunk, dispatch console recording voice channel |
FXS remote automatic telephone | Directly connects to ordinary telephone | Site office telephone and dispatch telephone |
MAG magneto telephone | Magneto voice channel interface | Magneto telephone, common battery telephone |
V.24/RS232/RS485/RS422 | Asynchronous ≤9600bps; synchronous 64Kbps | Low-speed data such as telecontrol and monitoring |
X.50/X.58, codirectional 64K | Bit rate 64Kbps, balanced impedance 120Ω | Protection signals, leased-line data |
V.35/V.36 (Nx64K bandwidth) | n×64Kbps (n=0～31) | Router and synchronous data services |
Ethernet bridge | N×VC12 (N≤50), IEEE802.3 | Remote Ethernet interconnection |
Figure 2: Close-up of the E1 interfaces and service wiring terminals on the rear panel of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment
Different service cards are mixed in the same chassis, and cross-connection and multiplexing between interfaces are completed inside the device. The interface types are determined by the service cards configured for the project. Audio services are compressed into 64Kbps voice channels according to A-law as recommended in ITU-T G.711. The electrical characteristics of the V.24 interface comply with the CCITT V.28 protocol, and the E1 interface follows the ITU-T G.703 standard, so no additional protocol conversion is required when interconnecting with existing network PCM equipment.
What Are the Core Functions of the IDM MAP4E1-30?
The functions of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment revolve around three threads: narrowband service access, PCM multiplexing, and 64K time-slot cross-connection. The service access mode and card configuration scheme can both be adjusted according to project requirements. The following function items and descriptions summarize the main capabilities of the device.
Function | Description |
|---|---|
4xE1 full time-slot non-blocking cross-connect | All 64K time slots of the 4 E1 channels participate in cross-connection; any input time slot can be scheduled to any output time slot, and connections do not contend for matrix resources with each other |
30-channel 64K service access | The main unit provides 30-channel 64K (or Nx64K) narrowband service access for subscribers, carrying voice and data in a mixed manner |
PCM multiplexing | 30-channel 64K services are multiplexed into the E1 channel for transmission; voice is encoded into 64Kbps voice channels using A-law as specified in ITU-T G.711 |
Service card expansion | The main board provides 15 service card slots, each card supporting up to two services, allowing flexible card configuration according to on-site service types |
Synchronous timing | Complete synchronous timing functions provide a unified clock reference for E1 channels and subscriber interfaces |
Networking topology | The 4 E1 channels can form point-to-point, chain network, star network and other structures, adapting to different site layouts |
Network management | Provides serial port network management or Ethernet SNMP network management, supporting remote viewing of link and service status and delivery of configurations |
Dual power supply modes | Supports AC 220V power supply or DC -48V power supply, selectable according to the existing power supply conditions at the site |
19-inch 1U chassis | Adopts a standard 19-inch 1U chassis, easy to install and occupying little cabinet space |
Figure 3: Close-up of the 15 service card slots and alarm indicator LEDs of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment
IDM MAP4E1-30 Technical Specifications
The E1 interface and audio interface indicators of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment comply with public recommendations such as ITU-T G.703, PCM30/32 and ITU-T G.711; the V.24 interface complies with the CCITT V.28 protocol, and the V.35 interface complies with ITU-T V.35. The following parameters are taken from the public technical documentation of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment, and the specific configuration is subject to the manufacturer's technical documentation and commercial confirmation.
Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
E1 channel count | 4-channel | 64K-level non-blocking cross-connection among 4 E1 channels, supporting point-to-point, chain network, and star network structures |
E1 bit rate | 2.048Mbps | Standard E1 line rate |
E1 line coding | HDB3 | Line coding compliant with ITU-T G.703 |
E1 standard protocol | Supports ITU-T G.703 | International standard followed by the E1 interface |
E1 impedance | 75Ω/120Ω | Two interface forms: 75Ω coaxial or 120Ω balanced |
E1 frame structure | PCM30/32 | 32 time slots per frame, of which 30 carry services |
E1 signaling | Channel-associated signaling | Line and voice channel status is transmitted together with the voice time slots |
64K service capacity | 30-channel (or Nx64K) | Telephone, magneto telephone, common battery telephone, and V.24 data services |
Service card slot | 15 | Up to two services per card, subject to the manufacturer's technical documentation and commercial confirmation |
FXO, FXS interface | Audio range 300Hz~3400Hz, compression ITU G.711 A-law | Three-element complex impedance 200Ω+560Ω//0.1μF, loop current 20mA per channel |
E&M 2/4-wire interface | Audio range 300Hz~3400Hz, impedance balanced 600Ω | Compression ITU G.711 A-law, return loss no less than 18dB |
Magneto interface | Audio range 300Hz~3400Hz, impedance balanced 600Ω | Compression ITU G.711 A-law, return loss no less than 18dB |
Codirectional 64K interface | Line coding G.703 standard, bit rate 64Kbps | Impedance balanced 120Ω, compliant with ITU-T G.703 recommendation |
V.24 interface | Asynchronous ≤9600bps; synchronous 64Kbps | Electrical characteristics compliant with CCITT V.28 protocol |
V.35 interface | Interface type RJ-45, transmission rate n×64Kbps (n=0~31) | Electrical characteristics compliant with ITU-T V.35 recommendation, terminal interface compliant with ISO2593 |
Ethernet (FE) | RJ-45, transmission rate N×VC12 (N≤50) | Supports IEEE802.3, operating mode full/half duplex/adaptive |
Ethernet (GE) | RJ-45, transmission rate N×VC12 (N≤63) | Supports IEEE802.3, operating mode full/half duplex/adaptive |
Network management mode | Serial port network management or Ethernet SNMP network management | Subject to the manufacturer's technical documentation and commercial confirmation |
Power supply mode | AC220V / DC-48V | AC and DC power supply modes are selectable |
Overall power consumption | ≤150W | Upper limit of overall power consumption |
Operating temperature | -10℃~+50℃ | Communications equipment room and outdoor cabinet environments |
Relative humidity | 0~95% (non-condensing) | Normal operation under non-condensing conditions |
Product dimensions | 482×309×44(mm) | 19-inch 1U chassis dimensions, length × depth × height |
How Is 4-Channel E1 Full-Time-Slot Non-Blocking Cross-Connection Achieved?
4-channel E1 full-time-slot non-blocking cross-connection depends on two conditions: the cross-connect granularity reaches 64K time slots, and the cross-connect matrix resources are not occupied by other connections. The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment establishes connection relationships in units of 64K time slots. All time slots of the 4 E1 groups can participate in cross-connection, any input time slot can be scheduled to any output time slot, connections do not compete for matrix resources, and existing services are not affected when circuits are added or adjusted.
Knowledge block: PCM30/32 frame structure and E1 interface standards. PCM30/32 is the frame structure standard of the E1 base group. Each frame is divided into 32 time slots, of which TS0 is used for frame alignment and alarms, TS16 is used for channel-associated signaling (CAS), and the remaining 30 time slots carry 64K services. The E1 interface of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment has a bit rate of 2.048Mbps and HDB3 line coding, complies with ITU-T G.703, and has an impedance of 75Ω/120Ω. Cross-connect configuration is performed at 64K time-slot granularity, and circuit adjustments at access nodes no longer depend on manual patch cords.
Cross-connection relationships are delivered as configurations, specifying the input E1 channel and time slot and the output E1 channel and time slot one by one according to the service plan. When a site is expanded or services are migrated, only the cross-connect configuration needs to be adjusted, while external lines and the equipment at the opposite end remain unchanged, reducing the on-site workload. The 4-channel E1 cross-connect therefore completes 64K-level service dispatching within a single device, without adding a separate cross-connect equipment.
How are 30 channels of 64K narrowband service access configured across 15 card slots?
30 channels of 64K narrowband service access rely on service cards configured as required. The main board provides 15 service card slots, with each card supporting up to two services. Voice channel interfaces can be FXO central office automatic telephones, FXS remote automatic telephones, and MAG magneto telephones. Data services cover V.24/RS232/RS485/RS422, X.50/X.58, codirectional 64K, and V.35/V.36 with Nx64K bandwidth. Voice and data are accessed in a mixed manner within the same device and then allocated to the target E1 time slots by the 64K cross-connect matrix.
Card configuration generally follows three steps: first, count the number of telephone, magneto, common-battery, and data channels required at the site to determine the number of cards of each service type; then check the time slot occupation of the 4 E1 channels and allocate the 30 channels of 64K services to each E1 by direction; finally, use serial port network management or Ethernet SNMP network management to verify that the configuration matches the actual services. When a site is expanded, interfaces are added by inserting service cards, without replacing the unit.
How do AC and DC dual power supply and wide-temperature design suit unattended sites?
AC and DC dual power supply is optional, meaning the same device can be connected to either an AC 220V power supply or a DC -48V power supply. A site can choose either one according to existing power supply conditions, and the overall power consumption is ≤150W. Substations and communications equipment rooms usually have both mains power and DC power systems, while field sites mostly use -48V storage battery banks. The same model can cover both types of sites, unifying spare parts and O&M practices.
The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment has an operating temperature of -10℃+50℃ and a relative humidity of 095% (non-condensing), with dimensions of 482×309×44 (mm), and can be installed in a standard cabinet or a vehicle-mounted rack. Serial port network management or Ethernet SNMP network management supports remote viewing of link and service status. Combined with optional AC and DC dual power supply and a wide operating temperature range, the device suits long-term online operation at unattended sites.
Figure 4: Installation and power supply wiring diagram of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment in a private network cabinet
Differentiated Value
Differentiated Capability | Value to Users |
|---|---|
4-channel E1 full-time-slot non-blocking cross-connection | A single device completes 64K-level service dispatching, circuit routing can be adjusted at the access layer, and capacity expansion does not require downtime to rearrange existing circuits |
15 service card slots and 30 channels of 64K narrowband service access in a 1U chassis | Telephone, magneto, common-battery, and V.24 data services are accessed by one unit, so the access layer does not need to cascade multiple single-function devices, reducing cabinet space and supporting power supply |
Optional AC and DC dual power supply, operating from -10℃ to +50℃ | Equipment rooms and field sites can use the same model, unifying spare parts and O&M practices, and suiting stable operation at unattended sites |
Typical Application Scenarios
The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment targets private network scenarios that use E1 as the transmission medium and need to aggregate telephone and data services into the same channel. Target industries include electric power private networks, rail transit communication, and military and government private networks. The 4 E1 groups can form point-to-point, chain network, and star network topologies, making it easy to select a networking topology according to site distribution. As a PCM equipment for the private network access layer, this integrated service access device highlights multi-service access within the same chassis and time-slot dispatching capability in its product showcase. Raytrans provides corresponding networking configurations for scenarios such as government private network optical fiber communication solutions, military emergency communications vehicle solutions, and smart mining communication solutions.
Figure 5: Point-to-point, chain network, and star networking topology diagram of the IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment
Electric Power Private Network: 4-Channel E1 Non-Blocking Cross-Connection, Substation Services Dispatched by One Unit
In electric power private networks, dispatch telephones as well as low-speed telecontrol and monitoring data run between substations, switching stations, and the dispatch center. The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment aggregates E1 channels from all directions and cross-connects voice channels and data to the corresponding channels at the 64K time-slot level, so one E1 carries both voice and data, reducing the number of private network lines. When a new bay is added or service assignment is adjusted, only the cross-connect configuration is changed while cabling remains unchanged; channel-associated signaling allows telephone services to interconnect directly with existing PCM switching equipment. As a time-slot cross-connect equipment, its 64K time-slot cross-connection capability makes service dispatching in electric power private network optical fiber communication solutions more flexible.
Rail Transit Communication: 30 Channels of 64K Services Mixed Access, Saving Equipment and Space for Inter-Station Communication
Rail transit sites are distributed along the line, and inter-station liaison telephones and monitoring data need to be aggregated at the central side. The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment accesses telephones, magneto telephones, and V.24 data within one device through mixed access of 30 channels of 64K services, and then sends them upstream over E1 channels; the 15 service card slots are configured according to site service types, so there is no need to install a separate transmission device for each service, reducing cabinet space and supporting power supply. The 4 E1 groups can form a chain network or star network, and services at sites along the line are dispatched by direction. This 4-channel E1 integrated service cross-connect multiplexing equipment balances service access density and networking flexibility in rail transit communication scenarios.
Military and Government Private Networks: AC and DC Dual Power Supply, Wide Temperature Operation Suited to Field Sites
Field sites of military and government private networks have power supply conditions that vary with the site, and both equipment room AC power and vehicle-mounted or site DC power may be encountered. The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment supports optional AC and DC dual power supply, with overall power consumption ≤150W and an operating temperature of -10℃~+50℃, and can be installed in a cabinet or a vehicle-mounted rack; field sites can operate online for the long term using -48V DC power supply, and when services change, the time-slot cross-connection configuration is adjusted from the central side without rewiring on site. In military emergency communications vehicle solutions and government private network optical fiber communication solutions, this PCM equipment can achieve rapid deployment and service dispatching based on the time-slot cross-connection capability of the 4-channel E1 integrated service cross-connect multiplexing equipment.
Conclusion
The IDM MAP4E1-30 Integrated Service Cross-Connect Multiplexing Equipment accomplishes both access and dispatching with one 19-inch 1U device: 64K-level non-blocking cross-connection of 4 E1 channels, access of 30 channels of 64K narrowband services within the same chassis, 15 service card slots configured as required, and optional AC and DC dual power supply with an operating temperature of -10℃~+50℃. The 4-channel E1 integrated service cross-connect multiplexing equipment suits access layer nodes of electric power private networks, rail transit communication, and military and government private networks. Before deployment, it is recommended to confirm the service card configuration based on the site service list and networking topology. The PCM equipment product showcase of Raytrans includes typical configurations of this model in various private network scenarios, which can serve as a reference for solution design.
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