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By reducing the original signal rate to 1 ⁄ 4 or 1 ⁄ 2, the link speed drops to 2.5 or 5 Gbit/s, respectively. [5] The spectral bandwidth of the signal is reduced accordingly, lowering the requirements on the cabling, so that 2.5GBASE-T and 5GBASE-T can be deployed at a cable length of up to 100 m on Cat 5e or better cables.
Later 2G releases in the GSM space, often referred to as 2.5G and 2.75G, include General Packet Radio Service and Enhanced Data Rates for GSM Evolution . GPRS allows 2G networks to achieve a theoretical maximum transfer speed of 40 kbit/s (5 kB/s). EDGE increases this capacity, providing a theoretical maximum transfer speed of 384 kbit/s (48 kB/s).
Using the CS-4 it is possible to achieve a user speed of 20.0 kbit/s per time slot. However, using this scheme the cell coverage is 25% of normal. CS-1 can achieve a user speed of only 8.0 kbit/s per time slot, but has 98% of normal coverage. Newer network equipment can adapt the transfer speed automatically depending on the mobile location.
Enhanced Data rates for GSM Evolution (EDGE), also known as 2.75G and under various other names, is a 2G digital mobile phone technology for packet switched data transmission. It is a subset of General Packet Radio Service (GPRS) on the GSM network and improves upon it offering speeds close to 3G technology, hence the name 2.75G.
This is a sortable list of broadband internet connection speed by country, ranked by Speedtest.net data for March 2024, [1] and with M-Lab data for June 2023 [2] Country/Territory Median
speed* Typical upload speed* Frequency band Channel spacing Maximum range (distance from antenna) Year of commercial implementation 0G SN, SN+ 2B/s: 50-150MHz: 1946 0.5G SI 200-350MHz: 1958 analog & digital ↓ 1G NMT, AMPS, TACS… 400-450MHz: 1979 1.5G D-AMPS 30kHz: digital ↓ 2G GSM: 800-1900MHz: 1991 CDMAone 800-1900MHz: 2G PDC: 2.5G GPRS ...
OC-48 is a network line with transmission speeds of up to 2488.32 Mbit/s (payload: 2405.376 Mbit/s (2.405376 Gbit/s); overhead: 82.944 Mbit/s). With relatively low interface prices, with being faster than OC-3 and OC-12 connections, and even surpassing gigabit Ethernet, OC-48 connections are used [when?] as the backbones of many regional ISPs.
The record for 5G speed in a deployed network is 5.9 Gbit/s as of 2023, but this was tested before the network was launched. [31] Low-band frequencies (such as n5) offer a greater coverage area for a given cell, but their data rates are lower than those of mid and high bands in the range of 5–250 megabits per second (Mbps). [6]