IDM IAD03 IP Magneto Access Gateway

The IDM IAD03 magneto access gateway is an integrated access gateway developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. It consists of a WAN port, LAN ports and magneto telephone interfaces (MAG), and is used to transmit 1 or 2 magneto telephone lines over an IP network. As an access layer product of the Raytrans brand, the IDM IAD03 uses the standard SIP protocol and can interconnect with standard SIP softswitch systems, providing VoIP/FoIP solutions for private network users who keep using magneto telephones. The device sits at the access layer between terminals and the IP network: it connects magneto telephones on the downlink and registers with a softswitch or dispatch server through the WAN port on the uplink, converting the signaling and voice of magneto telephones into SIP signaling and media streams that an IP network can carry. This IP access gateway is often presented in the product showcase as a typical access device for the IP transformation of magneto telephones.

In industrial private networks, magneto telephones are often installed in substations, trackside equipment rooms and field sites, and once the line cannot reach the network, dispatch is cut off. The IDM IAD03 magneto access gateway does three things for such scenarios: it supports dual-server registration settings, so that the call control center has dual backup and performs a fast switchover in the event of a network fault to keep services uninterrupted; in addition to the electrical port (RJ45 connector), the WAN port also supports an optical port (FC), and in optical interface form it supports intercommunication with a 100M media converter for long-distance access along an existing fiber link, which is also a common configuration for media converter manufacturers in networking solutions; and it supports VLAN partitioning and the 802.1q and 802.1p protocols, so that the service priority and VLAN tag of voice data streams can be set. With these capabilities, this IP access gateway can serve a variety of private network communication scenarios, such as government private network optical fiber communication solutions, military emergency communications vehicle solutions and smart mining communication solutions.

Key specifications at a glance: 1~2 magneto telephone interfaces (MAG) · 1 WAN port + 4 LAN ports · WAN port supports RJ45 electrical port and FC optical port · standard SIP protocol registration · dual-server registration and dual backup of call control · AC220V power supply, 4W power consumption

Figure 1: IDM IAD03 IP magneto (MAG) access gateway, front view of the unit, close-up of the interface and indicator LED layout

What Is a Magneto Access Gateway?

What a magneto access gateway is, in one sentence: a magneto access gateway is access equipment that converts the voice and signaling of magneto telephones into SIP signaling and IP media streams, so that magneto telephones can be connected to an IP network. In a magneto telephone, voice and signaling share one pair of lines, and call setup relies on changes in the direct current and ringing current state on the line, which differs from the dial-up mode of an ordinary push-button telephone; the IDM IAD03 magneto access gateway restores this line state on the interface side and translates the magneto line state into standard SIP calls on the network side, so that magneto telephones can be managed uniformly by the softswitch and the dispatch system as SIP terminals.

As an IP magneto access gateway, the IDM IAD03 provides 2 magneto telephone interfaces (MAG), configured for use with 1 or 2 magneto telephone lines; it also provides 1 WAN port and 4 LAN ports, where the WAN port is responsible for registering with the server on the uplink and the LAN ports serve terminal access on the local area network (LAN) side. The unit of the IDM IAD03 measures 190mm×120mm×40mm in length, depth and height, with an AC220V power input and 4W power consumption, and it can be placed directly on a duty desk or installed in a site cabinet without requiring additional rack space.

Figure 2: IDM IAD03 magneto access gateway WAN port FC optical port and 2-channel magneto telephone interface wiring diagram

How Is a Magneto Telephone Connected to an IP Network?

How a magneto telephone is connected to an IP network involves four steps in operation: wiring, IP configuration, registration and service activation. First connect the magneto telephone to the MAG interface of the IDM IAD03 magneto access gateway, then connect the WAN port to the IP private network — choose the FC optical port when the site already has a fiber link, since in optical interface form it supports intercommunication with a 100M media converter, or use the electrical port (RJ45 connector) when a network cable is available in the equipment room.

For the IP configuration step, the IDM IAD03 supports the DHCP and DNS client protocols and can obtain an IP address automatically; it can also be placed behind an ADSL modem, where it automatically runs the PPPoE protocol to bring up the enterprise Internet interface, and it can redial automatically after a PPPoE interruption, with no manual intervention needed once the link recovers.

The registration step is completed on the network side: the IDM IAD03 registers with the server through the WAN port and supports dual-server registration settings, so that two server addresses can be configured at the same time, switching to the standby one when the primary is abnormal, which gives the call control center dual backup. The numbers and permissions of the magneto telephones are then configured on the softswitch or dispatch system side, and the magneto telephones can take part in dispatch calls.

Day-to-day configuration does not require a site visit. The IDM IAD03 supports WEB network management, and users can log in to the magneto access gateway through the WAN port and LAN ports to perform configuration; the registration status, IP address and call parameters can all be viewed and modified on the network management page, so unattended field sites can be handled remotely by O&M personnel within the private network.

What Functions and Network Protocols Does the IDM IAD03 Support?

The functions of the IDM IAD03 magneto access gateway are concentrated in three areas: access conversion, service protection and remote management. Each function and its role is shown in the table below.

Echo cancellation meets the ITU-T G.168/165 standard and, together with dynamic jitter buffer management and packet compensation technology, is used to suppress the echo and jitter caused by long links in private networks and cross-network transmission; voice activity detection and comfort noise generation in turn reduce bandwidth utilization during silent periods while avoiding an abrupt sense of silence in a call.

Interface Configuration and Core Technical Specifications of the IDM IAD03

The interface and performance parameters of the IDM IAD03 are subject to the product documentation. The table below summarizes the parameters specified in the documentation, for reference in selection and networking design.

Differentiated Value: How Dispatch Stays Uninterrupted Once Magneto Telephones Go onto an IP Private Network

The differentiated value of the IDM IAD03 magneto access gateway comes from three capabilities directly related to on-site stability. The selling points and the corresponding capabilities are shown in the table below.

These three capabilities address the same on-site problem: the sites where magneto telephones are located are often far from the central equipment room, and both the link conditions and the power supply conditions are less than ideal. The IDM IAD03 uses an optical port to access existing optical fiber, uses dual-server registration to cover network faults, and uses 802.1p priority to protect voice on congested links; together with 4W low power consumption and direct AC220V power supply, the site side does not need to prepare equipment room conditions for the IDM IAD03. As a product of the Raytrans brand, the IDM IAD03 in the IP access gateway category addresses exactly this kind of site-side voice access need, and it is also a common supporting equipment form factor for media converter manufacturers in government private network optical fiber communication solutions.

Typical Application Scenarios

Electric Power and Rail Transit Private Network Dispatch

In electric power substations and railway trackside equipment rooms, magneto telephones are a reliable terminal means of dispatch communication. The IDM IAD03 magneto access gateway is installed on the site side, connecting 1 or 2 magneto telephones to the IP private network; the WAN port uses an FC optical port for interfacing directly with the existing fiber link in the station, and once intercommunication with a 100M media converter is established, voice can be sent to the dispatch center. Dual-server registration and dual backup of call control allow automatic switchover when the active channel is abnormal, so dispatch calls are not interrupted by a single point of failure; VLAN partitioning and 802.1p priority then ensure that voice streams are forwarded first in the shared in-station network. The same architecture also applies to the edge access layer of government private network optical fiber communication solutions, where Raytrans IP access gateway products take on the role of converting magneto telephones to the IP private network.

Communication at Unattended Sites in the Field

Unattended sites in the field usually have no personnel on duty, and it is not appropriate to run a separate line for voice. The WAN port of the IDM IAD03 supports an FC optical port and can access the private network along the fiber link already available at the site, completing the optical-to-electrical connection once intercommunication with a 100M media converter is established; AC220V power supply and 4W power consumption suit the small-capacity power source in the station. For O&M, the IDM IAD03 supports WEB network management, and users can log in remotely through the WAN port to configure it and check the registration status; the system supports VPN (PPTP&L2TP), so a remote station can backhaul voice services through an encrypted tunnel, reducing on-site trips. In military emergency communications vehicle solutions, this optical port uplink and low power consumption also make rapid setup and withdrawal convenient.

Remote Industrial Sites Such as Mining Areas and Oilfields

The production sites of mining areas and oilfields are scattered, and the environment is dominated by indoor cabinets and duty rooms. The IDM IAD03 magneto access gateway has an operating temperature of 0℃~45℃, a storage temperature of -20℃~80℃ and a humidity of 10%~90% non-condensing, and can be placed directly in an on-site cabinet for operation; its access capacity for 1 or 2 magneto telephones matches the small number of telephones needed at duty points and metering stations, and its voice encoding and decoding supports G.711, G.729A and G.723.1, which, together with voice activity detection and comfort noise generation, reduce utilization during silent periods on links with limited bandwidth and leave the limited link resources to production data. In smart mining communication solutions, the IDM IAD03 can serve as the terminal device that connects the magneto telephones of mining area duty points and metering stations to the IP private network, and works together with other Raytrans transmission products to complete voice intercommunication between underground and surface.

How to Choose a Dual-Channel Magneto Access Gateway?

How to choose a dual-channel magneto access gateway: first determine the model by the number of telephones, then determine the configuration by the link and network management conditions, and the choice can be settled once three checks are complete.

It should be noted that the IDM IAD03 addresses access scenarios with a small number of magneto telephones at a single site. If a site has more than 2 magneto telephone lines, or if magneto telephones need to be connected to the dispatch system together with radio sets, trunking and other systems, deployment should be scaled out horizontally according to the number of sites, with the upper-level softswitch or dispatching platform taking on number and conference management. The link distance and the specific media converter model pairing are subject to the on-site link conditions and the manufacturer's technical documentation and commercial confirmation. As a media converter manufacturer, Raytrans can provide selection support for IP access gateways and optical transmission equipment in government private network optical fiber communication solutions, military emergency communications vehicle solutions and smart mining communication solutions; for specific product showcase details and configuration specifics, documentation can be obtained from the manufacturer for confirmation.

How to Configure VLAN and 802.1p Priority on a Magneto Access Gateway?

How to configure VLAN on a magneto access gateway: the practical sequence is to log in to the WEB network management first, then create the VLAN, then tag it, and finally verify it. The IDM IAD03 supports WEB network management, and users can log in to the magneto access gateway through the WAN port and LAN ports to perform configuration.

VLAN partitioning serves to separate the voice streams of magneto telephones from other services at the site. After a VLAN tag is assigned to the voice stream on the network management page and the corresponding VLAN ID is filled in, the voice data stream is forwarded on the shared link according to the tag and is no longer mixed with production data in the same broadcast domain.

The priority part corresponds to the 802.1p protocol. After the service priority is set for the voice data stream, the switch forwards voice frames first in the event of link congestion, and the call quality of the magneto telephone will not decline because of a data service burst in the same period. The IDM IAD03 supports both the 802.1q and 802.1p protocols, and the VLAN tag and priority can be configured in the same place; after configuration, it is recommended to verify with an actual call whether the tag and priority take effect as expected.

Summary

The IDM IAD03 magneto access gateway does three things in one small device: first, access — 2 magneto telephone interfaces (MAG) configured for use with 1 or 2 lines, interconnected with standard softswitch systems through the standard SIP protocol, so magneto telephones can go onto an IP private network without being replaced; second, reliability — dual-server registration settings and dual backup of call control allow a fast switchover in the event of a network fault, and the WAN port can use an FC optical port and supports intercommunication with a 100M media converter, letting remote sites access the network along existing optical fiber; third, control — VLAN partitioning and 802.1q and 802.1p priority separate voice streams from other services, and WEB network management together with VPN (PPTP&L2TP) allows remote O&M of field sites. When selecting, first confirm the number of channels for the telephones and the uplink interface form, then confirm the three requirements of reliability, service isolation and O&M approach, and finally decide the number of units to deploy according to the number of sites.

Differentiated Value: How Dispatch Stays Uninterrupted Once Magneto Telephones Go onto an IP Private Network

The differentiated value of the IDM IAD03 magneto access gateway comes from three capabilities directly related to on-site stability. The selling points and the corresponding capabilities are shown in the table below.

These three capabilities address the same on-site problem: the sites where magneto telephones are located are often far from the central equipment room, and both the link conditions and the power supply conditions are less than ideal. The IDM IAD03 uses an optical port to access existing optical fiber, uses dual-server registration to cover network faults, and uses 802.1p priority to protect voice on congested links; together with 4W low power consumption and direct AC220V power supply, the site side does not need to prepare equipment room conditions for the IDM IAD03. As a product of the Raytrans brand, the IDM IAD03 in the IP access gateway category addresses exactly this kind of site-side voice access need, and it is also a common supporting equipment form factor for media converter manufacturers in government private network optical fiber communication solutions.

Typical Application Scenarios

Electric Power and Rail Transit Private Network Dispatch

In electric power substations and railway trackside equipment rooms, magneto telephones are a reliable terminal means of dispatch communication. The IDM IAD03 magneto access gateway is installed on the site side, connecting 1 or 2 magneto telephones to the IP private network; the WAN port uses an FC optical port for interfacing directly with the existing fiber link in the station, and once intercommunication with a 100M media converter is established, voice can be sent to the dispatch center. Dual-server registration and dual backup of call control allow automatic switchover when the active channel is abnormal, so dispatch calls are not interrupted by a single point of failure; VLAN partitioning and 802.1p priority then ensure that voice streams are forwarded first in the shared in-station network. The same architecture also applies to the edge access layer of government private network optical fiber communication solutions, where Raytrans IP access gateway products take on the role of converting magneto telephones to the IP private network.

Communication at Unattended Sites in the Field

Unattended sites in the field usually have no personnel on duty, and it is not appropriate to run a separate line for voice. The WAN port of the IDM IAD03 supports an FC optical port and can access the private network along the fiber link already available at the site, completing the optical-to-electrical connection once intercommunication with a 100M media converter is established; AC220V power supply and 4W power consumption suit the small-capacity power source in the station. For O&M, the IDM IAD03 supports WEB network management, and users can log in remotely through the WAN port to configure it and check the registration status; the system supports VPN (PPTP&L2TP), so a remote station can backhaul voice services through an encrypted tunnel, reducing on-site trips. In military emergency communications vehicle solutions, this optical port uplink and low power consumption also make rapid setup and withdrawal convenient.

Remote Industrial Sites Such as Mining Areas and Oilfields

The production sites of mining areas and oilfields are scattered, and the environment is dominated by indoor cabinets and duty rooms. The IDM IAD03 magneto access gateway has an operating temperature of 0℃~45℃, a storage temperature of -20℃~80℃ and a humidity of 10%~90% non-condensing, and can be placed directly in an on-site cabinet for operation; its access capacity for 1 or 2 magneto telephones matches the small number of telephones needed at duty points and metering stations, and its voice encoding and decoding supports G.711, G.729A and G.723.1, which, together with voice activity detection and comfort noise generation, reduce utilization during silent periods on links with limited bandwidth and leave the limited link resources to production data. In smart mining communication solutions, the IDM IAD03 can serve as the terminal device that connects the magneto telephones of mining area duty points and metering stations to the IP private network, and works together with other Raytrans transmission products to complete voice intercommunication between underground and surface.

How to Choose a Dual-Channel Magneto Access Gateway?

How to choose a dual-channel magneto access gateway: first determine the model by the number of telephones, then determine the configuration by the link and network management conditions, and the choice can be settled once three checks are complete.

It should be noted that the IDM IAD03 addresses access scenarios with a small number of magneto telephones at a single site. If a site has more than 2 magneto telephone lines, or if magneto telephones need to be connected to the dispatch system together with radio sets, trunking and other systems, deployment should be scaled out horizontally according to the number of sites, with the upper-level softswitch or dispatching platform taking on number and conference management. The link distance and the specific media converter model pairing are subject to the on-site link conditions and the manufacturer's technical documentation and commercial confirmation. As a media converter manufacturer, Raytrans can provide selection support for IP access gateways and optical transmission equipment in government private network optical fiber communication solutions, military emergency communications vehicle solutions and smart mining communication solutions; for specific product showcase details and configuration specifics, documentation can be obtained from the manufacturer for confirmation.

How to Configure VLAN and 802.1p Priority on a Magneto Access Gateway?

How to configure VLAN on a magneto access gateway: the practical sequence is to log in to the WEB network management first, then create the VLAN, then tag it, and finally verify it. The IDM IAD03 supports WEB network management, and users can log in to the magneto access gateway through the WAN port and LAN ports to perform configuration.

VLAN partitioning serves to separate the voice streams of magneto telephones from other services at the site. After a VLAN tag is assigned to the voice stream on the network management page and the corresponding VLAN ID is filled in, the voice data stream is forwarded on the shared link according to the tag and is no longer mixed with production data in the same broadcast domain.

The priority part corresponds to the 802.1p protocol. After the service priority is set for the voice data stream, the switch forwards voice frames first in the event of link congestion, and the call quality of the magneto telephone will not decline because of a data service burst in the same period. The IDM IAD03 supports both the 802.1q and 802.1p protocols, and the VLAN tag and priority can be configured in the same place; after configuration, it is recommended to verify with an actual call whether the tag and priority take effect as expected.

Summary

The IDM IAD03 magneto access gateway does three things in one small device: first, access — 2 magneto telephone interfaces (MAG) configured for use with 1 or 2 lines, interconnected with standard softswitch systems through the standard SIP protocol, so magneto telephones can go onto an IP private network without being replaced; second, reliability — dual-server registration settings and dual backup of call control allow a fast switchover in the event of a network fault, and the WAN port can use an FC optical port and supports intercommunication with a 100M media converter, letting remote sites access the network along existing optical fiber; third, control — VLAN partitioning and 802.1q and 802.1p priority separate voice streams from other services, and WEB network management together with VPN (PPTP&L2TP) allows remote O&M of field sites. When selecting, first confirm the number of channels for the telephones and the uplink interface form, then confirm the three requirements of reliability, service isolation and O&M approach, and finally decide the number of units to deploy according to the number of sites.