Metanoia Communications Inc. a fabless chip company founded in 2003 has announced that Huawei Technologies Co. Ltd. (Shenzhen, China), the world's largest telecommunications equipment vendor, has started using the MT2311 chip for VDSL2 communications in so called fiber-to-the-door (FTTD) equipment.
VDSL2 (very high bit-rate digital subscriber line 2) is communications technology that makes use of existing copper wires originally deployed for voice communications to deliver Internet access.
The MT2311 chip is a single-port VDSL2 transceiver that can be used on the central office (CO) side or on the customer premises equipment (CPE) side. Performance is enhanced by integrating memory in the MT2311 device, and the line driver within the analog front-end (AFE), the MT3301. The MT2311 features both VDSL2 and ADSL2/ADSL2+ backwards compatibility, which enables it to be deployed in a mixed environment. Furthermore, the MT2311 DMT chip also includes the VDSL2 features such as G.inp and G.vector. G.inp provides physical layer retransmission, which is beneficial for IPTV services. The G.vector capability provides the tools for the cental office side to cancel crosstalk between adjacent lines in a bundle, which leads to a substantial increase in data rates.
The MT2311 and MT3302 AFE combination also support all T1E1.4 and ITU-T VDSL2 and ADSL2/ADSL2+ discrete multi-tone based specifications, as well as IEEE 802.3 10PASS-TS.
By using the MT2311 chipset, Huawei’s FTTD equipment can achieve up to 300 Mbit per second aggregate data rate and employ a higher-efficiency encoding scheme, which provides more reliable line quality, Metanoia said.
"Metanoia’s VDSL2 chipset was the most competitive semiconductor solution that offered the high-performance data-rate required for our 300 Mbit per second FTTD solution," said Han Yu Fa, general manager of Huawei’s access network product line, in a statement issued by Metanoia.
Metanoia (Hsinchu, Taiwan) is possibly the least well known of a relatively small group of fabless chip companies that sell VDSL2 chips. These include Broadcom, Lantiq, Ikanos Communications and PMC Sierra.
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