Huawei MDF (Main Distribution Frame) have been launched since 1997, and now have been deployed worldwide in more than 170 regions and countries, such as China, Russia, Peru, Yemen, Pakistan, Ecuador, Brazil, Thailand, and Hongkong, etc.

Up to now, product series include traditional product --JPX202 MDF, innovation product with back-plug-in splitter --JPX321 MDF, and high-compactness product --JPX658 MDF and so on.

Reference standards:

• ITU-T K.11 (1993), Principle of protection against overvoltages and overcurrnts
• ITU-T K.12 (2000), Characteristics of gas discharge tubes for the protection of telecommunications installations.
• ITU-T K.20 (2000), Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents
• ITU-T K.30 (1993), Positive temperature coefficient (PTC) thermistors