FAQ

Troubleshooting the IDM WR300 can be carried out from the outside in. First check the SIM card and the antenna: the card type must be 1.8V/3.3V and match the private network services, and the 4-channel 50Ω SMA antenna interfaces must be properly connected. Then check the network parameters: the local 5G frequency band must be within the range supported by the device, and the APN and the access configuration must be correct. Then check whether the network port role and the IP and DHCP configurations are consistent with those on site. Finally check the serial port parameters: whether the wiring…

The IDM OMP8000 is a carrier-class optical multiplexing equipment introduced by Beijing Ruiguang Jiyuan Digital Technolo

PCM30/32 is the common frame format of the E1 base group. Each frame contains 32 time slots, of which 30 carry voice or

When the IDM-MINI 20Km single-fiber PCM multiplexer runs over an optical fiber channel, its transmission distance is 20Km under single-mode single-fiber conditions, and a long-distance optical module can be optionally installed for fiber transmission over longer distances. Whether the optical path can run the full 20Km is verified with an optical power budget: the transmit optical power of the device is -3 to -11 dBm and the receiver sensitivity is better than -36 dBm, and the difference between the two is the loss margin available to the link, from which the attenuation per kilometer of optical fiber, the connector loss and the patch cord loss are deducted item by item. If the calculated result is close to the lower limit of the margin, a more sensitive long-distance optical module can be used instead. Over an E1 channel, the transmission distance is determined by the 2M dedicated line, microwave or DDN transmission system being accessed.

The user-side interfaces of the IDM-MINI are divided by service type: for voice, 8 channels of 64K voice channels are provided, with an audio range of 300Hz～3400Hz and compression according to A-law in ITU G.711; on the data side, the V.24 interface is asynchronous at ≤9600bps and synchronous at 64Kbps, while the V.35 interface is provided in RJ-45 form at a rate of n×64Kbps (n=0～31); the Ethernet interface is RJ-45 at a rate of N×2.048Mbps (N≤50) and supports IEEE802.3. On the uplink side, the E1 interface has a bit rate of 2048Kbps, HDB3 line coding and an impedance of 75Ω/120Ω, and the optical interface is 155M/155M, single-mode single-fiber at 1310nm/1550nm.

The IDM OMP3500 multi-service-over-one-fiber integrated access platform is an integrated multiplexer developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd., used at private network access points to simultaneously carry E1 leased lines, narrowband voice and Ethernet services over a pair of 2.5Gbps optical fibers. As an optical multiplexer manufacturer, Raytrans integrates the access capacity of telephone optical multiplexers, multi-service optical multiplexers and gigabit network optical multiplexers into a single device, so an access point does not need to stack multiple single-service devices by service type, and cabinet space usage and cabling between devices are reduced accordingly. The platform is commonly found in scenarios such as government private network optical fiber communication solutions, military emergency communications vehicle solutions and smart mining communication solutions.

The access capacity of the IDM OMP3500 falls into four parts. The line side supports up to 2 2.5G SFP optical ports; the E1 side supports up to 16 groups of E1 transparent transmission with CC3-16 or CC3-8 physical interfaces; the Ethernet side provides 2 groups of gigabit Ethernet plus 4 groups of Fast Ethernet physically isolated wire-speed ports; the user side provides 30 channels of narrowband PCM through interface cards, where FXS/FXO and magneto cards support 10 or 8 channels per card, 2/4-wire EM cards support 4 channels per card, and RS232/RS422/RS485 cards support 8 channels per card. The enclosure provides 3 service slots, and boards support hot swapping with power on.

The standard transmission distance of a 1-channel video optical terminal is 20Km, based on single-mode fiber and FC opti

The service interfaces of a 1-channel video optical terminal are stacked by model: the video channel uses a BNC interfac

The standard configuration of the IDM-VDA2000 series 2-channel video optical multiplexer provides a transmission distanc

The IDM-VDA2000 series 2-channel video optical multiplexer provides four types of service interfaces: the video port is

The IDM-VDA2000 series 2-channel video optical multiplexer is an optical fiber transmission access device between survei