How EOC solves the noise problem of the return channel

1. Compared with active EOC and LAN, both are fiber-to-the-building or fiber-to-the-corridor, and LAN enters the home through ordinary network cables behind the corridors, because the network cables are point-to-point transmission. If there are several users, several network cables will be pulled, and all users will be concentrated on one switch and share 10 M, which will cause the problem of mutual interference and virus propagation, and the problem that the fault point cannot be quickly located after the failure. The EOC technology is transmitted through coaxial cable, which is broadcast transmission.

All users can be connected via 1 trunk line. And on the headend, all users are isolated, there will be no interference problems, and the headend can monitor all terminals. In the event of a fault, the fault point can be quickly located.

2. The similarity between active EOC and ADSL is that they are not network signals when entering the home, and a modem is needed to convert the signal at the user end. The entrance line is to transmit 2 different signals at the same time. ADSL is the ** signal and the network signal, and the EOC is the TV signal and the network signal.

The difference is that the TV signal and network signal of the EOC are broadcast transmission, and the central office equipment is relatively simple and the cost is low. The ** signal of ADSL and the network signal are transmitted point-to-point. The central office equipment is relatively complex and costly.

In summary, active EOC Internet access has the following characteristics:

It is capable of transmitting wideband data signals (with sufficient bandwidth and stable data transmission performance).

Wideband data signals and cable TV signals are transmitted without interfering with each other (broadband signals and TV signals must be well isolated).

It can adapt to the existing cable TV coaxial distribution network without the need to modify the existing line. (It can be deployed quickly, no need to rewire, no need to disturb the people).

ethernet over coax

Broadband for Ethernet data transmission over coaxial cables.

EPON belongs to optical fiber communication, and both CMTS and EOC belong to modulated communication.

The application scope is similar, EPON+EOC can be used as an access area in the CMTS coverage area, where it is inconvenient for two-way network reform.

However, the standards and technologies are mature enough for CMTS.

Phase modulation communication, fiber polarization modulation communication.

Utilize the existing broadcast HFC network to provide users with digital TV, interactive TV and broadband services.

Simple installation, plug and play, quick deployment, no need to re-wiring, no need to disturb the people.

The bidirectional bandwidth is up to 100M, and the anti-noise interference ability is much higher than that of CableModem, which can work in harsh network environments.

Small size, light weight, suitable for home, corridor and residential installation.

Safe and reliable, stable operation, economical and practical.

The TV interface can be compatible with all mainstream cable TV equipment such as splitters, TVs, optical generators, etc., and the data interface can be compatible with all Ethernet devices such as switches, routers, IP set-top boxes, PCs, etc.

The embedded system can be logged in through HTTP for various management settings, such as setting IP and passwords.

Full-duplex and half-duplex modes are supported.

Support 10 100m self-adaptation.

Support Ethernet, 10Mbps).

Fast Ethernet 100Mbps is supported).

1. The EOC equipment can stably support 10 concurrent data streams with a throughput of 8Mbps (average) for a long time, and the EOC home technology has the ability to support 100Mbps into the corridor and 10Mbps into the home broadband access scheme;

2. The home Ethernet based on coaxial cable formed by EOC products realizes the best radio and television signal output, the first interactive network interface, and the operation is stable;

3. A single standard WOC device can support 6 concurrent data streams with throughput, and its performance is better than that of the current mainstream broadband access technology. WOC access to the home is one of the effective ways to achieve broadband access on cable TV networks;

Low-frequency technology has the following characteristics:

1) Good frequency isolation from TV signal, strong anti-interference ability (2) low frequency attenuation, large coverage.

3) High bandwidth, can bring a large number of users.

High-frequency technology has the following characteristics:

1) The anti-interference ability is poor, and the high-frequency noise is easy to be injected from the connector (2) The coverage is small, the high-frequency attenuation on the coaxial cable is large, and the high-frequency characteristics of the branch distributor are not easy to ensure (3) The amplifier transformation is difficult, and the active repeater needs to be used to cross, and the total bandwidth is affected.

I'll send you 1 comparison cousin, it's clear!

EOC (Ethernet over Cable) is an access technology based on the Ethernet protocol of the cable TV coaxial cable network. Its basic principle is to use specific media conversion technology (mainly including impedance transformation, balance unbalance transformation, etc.), and transmit the data signal that meets the series standard through the home coaxial cable. This technology can make full use of the existing home coaxial cable resources of the cable TV network to solve the access problem of the last 100m.

According to the different media conversion technologies, EOC technology is further divided into active EOC technology and passive EOC technology.