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What is 4G LTE? The main difference between 4G LTE gateway and CPE?

Time:2022-03-13 13:44:32 Popularity:642

What is 4G LTE? The main difference between 4G LTE gateway and CPE?

What is 4G LTE?

The so-called 4G is the abbreviation of the fourth generation of mobile communication and its technology. In the definition of ITU (International Telecommunication Union), any wireless data network system that reaches or exceeds 100Mbps can be called 4G.

4g.png

The full name of LTE is "Long term Evolution", which literally translates to "Long Term Evolution". LTE is divided into two duplex modes, namely FDD LTE and TDD LTE. LTE significantly increases the spectral efficiency and data transmission rate, and the peak rate can reach 50Mbps for uplink and 100Mbps for downlink. Compared with the 3G era, the downlink peak speed of 10Mbps is 10 times faster.

From the concepts of the two, we can understand that 4G and LTE are not the same thing, but generally speaking, LTE network can meet the standard of 4G network (downlink 100Mbps), and the 4G era is dominated by LTE network, so The two are usually combined and collectively referred to as 4G LTE.

industrial 4G routers.jpg

The difference between 4G LTE gateway and CPE

4G CPE is an LTE data terminal device that converts high-speed 4G signals into WiFi signals, which can support a large number of mobile terminal access. 4G CPE can be widely used in wireless network access in rural areas, towns, hospitals, units, factories, communities, etc., which can save the cost of laying wired networks.

With the continuous development of the market, the original CPE products can no longer meet the market demand, and the 4G LTE gateway was born in response to the market demand. As a new LTE data terminal product, 4G LTE gateway, what functions does 4G LTE gateway have? What is the difference between 4G LTE gateway and CPE? The following will give a detailed introduction.

4G LTE gateway is a comprehensive intelligent gateway that integrates the functions of CPE, voice gateway and wireless router. Users can use POTS phones, PC soft terminals or SIP phones to access CM-IMS through TDD-LTE gateway and use voice services. PCs or mobile phones can access the Internet through the LAN port or WiFI interface to use data services. The interfaces supported by Telpo 4G LTE gateway are: 2 voice phone interfaces, 1 WAN port, 4 LAN ports, downlink AP; the uplink supports access to the Internet through SIM card or wired WAN port. The 4G LTE gateway is mainly for users of remote branches, cluster stores, chain stores and other users with LTE coverage.

First, the CPE can only be accessed through the operator's wireless network, and the 4G LTE gateway also supports wired access on this basis (the 4G LTE gateway has one WAN port). The 4G LTE gateway uplink two access methods can realize the link hot backup function. For example, when the 4G LTE gateway is used as a voice access device, if the voice dedicated line connected to the electrical port (WAN port) fails, the device can automatically switch to The LTE wireless network is registered to the IMS platform to ensure the use of voice and data.

Second, the downlink interface of CPE only has WIFI and LAN ports, which can only meet the user's network access requirements. However, many shops and stores now need to access financial POS machines, fax machines, landline phones and other equipment, and traditional CPE cannot meet these needs. The 4G LTE gateway adds 2 RJ11 analog phone interfaces on the basis of CPE, which perfectly complements the function gap of CPE.

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