MDF MDF - Main Distribution Frame - | MDF Audio Distribution | MDF telephone main distribution frame (100 loops security terminal block), (128 loop test terminal block), security, a main distribution frame rack by the security terminal block, security unit, test terminal block, alarm system, etc., between the user and the PBX play connector cable, wire transfer, protection, alarm and so on. MDF (Main Distribution Frame) with a total distribution frame, main distribution frame | Audio MDF | MDF phone. Main Distribution Frame (MDF), Optical Distribution Frame (ODF), Digital Distribution Frame (DDF), integrated equipment rack, integrated room and other products and construction and maintenance; communication power supply maintenance includes providing lead-acid batteries, low voltage distribution electrical equipment, lightning protection equipment and its maintenance. Production and management of communications products. Three Netcom professional manufacturer of MDF main distribution frame (cabinet), security terminal block, test terminal block, the security unit, MDF security, terminal tools. Has a wide variety, high yield, excellent performance, etc. Three network communications professional production and sales MDF main distribution frame, security terminal block, test terminal block, the security unit, wire cutter, line ancillary facilities. Three FTTX network communication wiring everything, quality assurance! You are always welcome to come to consult! ! ! FTTX central office distribution frame, MDF MDF, DDF digital distribution frame, ODF optical fiber distribution frame. MDF main distribution frame adapted to be connected to game device exchange with various cable capacity between the telephone office, with good performance and reliable connection protection. Product sub: I type (card access), II (wrap style), III (double contact card access) three. Features: Press YD / T694-1999 latest standards. The frame is aluminum alloy bar, solid structure, good looks, easy installation. Test terminal block, single-contact-type, double-break style, around the cassette, angled snap reed, reliable connection. Security unit with overvoltage, overcurrent protection and grounding warning function. All operations of the main distribution frame (security device plug, inside and outside the lines and jumper connection and testing) are carried out in front. All plastic parts are flame resistant, flame-retardant performance to GB / T5169.7 in A-level requirements, other indicators are in line with Industry Standard YD / T694-2004 "MDF" technical performance requirements: Operating temperature : +5 ~ + 40 ℃ Relative humidity: 5N pull-off force: ≥25N single strand of plastic insulated wire: wire diameter of 0.32 ~ 0.6mm, maximum diameter (including insulation) ≤1.44mm snap-life> 200 times transmission characteristics (4kHz ~ 2.2MHz): insertion loss ≤ 1.5dB Return Loss ≥ 10 dB Equipment Standard: comply with the relevant provisions of the combustion properties of plastic parts and printed circuit board YD / T694-2004 compliance: GB / T5169.7-1985 of regulations