TNF1AUX is a system auxiliary interface board applied to Huawei 1800 II enhanced chassis and 1800 V chassis. TNF1AUX part number is 03054663. The AUX provides auxiliary ports such as external clock ports and alarm input/output ports. Function and Feature Synchronous/Asynchronous transparent data port Not supported External clock port For TNF1AUX: Uses one RJ45 port providing two BITS clock inputs and two clock outputs. The port impedance is 120 ohm. The two clock inputs can use independent clock sources but the two clock outputs must use the same clock source. A site can use only one clock source at a time. External time port The TNF1AUX board provides two external clock input/output ports with TOD0 and TOD1 ports. Housekeeping alarm input/output ports Provides alarm ports with six inputs and two outputs. Outdoor cabinet monitoring port Supported. Orderwire phone port Provides one orderwire phone port so that operation/maintenance engineers at different workstations can have voice communication with each other. Specifications of orderwire ports Transmission channel Bytes E1 and E2 in the SDH overhead NOTE: When a universal line board is used to transmit orderwire signals, only the E1 byte in the SDH section overhead can be used. Orderwire type Addressed call and conference call Pair in each direction One symmetrical pair Impedance (ohm) 600 Specifications of the OptiX OSN's external clock ports 2048 kbit/s (in compliance with ITU-T G.703) or 2048 kHz (in compliance with ITU-T G.703)
