H3C MSR 20 User Manual

Also see for H3C MSR 20: Installation guide Configuration guide

Contents

H3C MSR 20 User Manual Manual pdf 110 page image

110 CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULESInterface Cable External ports provided by MIM-1AT3 module are two SMB sockets respectivelyfunctioning as Tx end and Rx end for transmitting data and receiving data. Theports work in 75-ohm unbalanced transmission mode and are connected to thepeer device using a pair of 75-ohm unbalanced coaxial cables as shown inFigure 121. Several cable length options are available.n MIM-1AE3 and MIM-1AT3 modules use the same type of cables for connection,which are called E3/T3 cables in this manual.Connecting the InterfaceCablec CAUTION: Some measures have been taken to protect MIM-1AT3 module. Toachieve better lightning protection effects, however, you are recommended to adda special lightning arrester at the input end of the E3/T3 cable when leading it tothe outdoors.Step 1: Connect the SMB connector of an E3/T3 cable to the Tx port of MIM-1AT3module and another end to the Rx port on the device to be connected;Step 2: Connect the SMB connector of another E3/T3 cable to the Rx port ofMIM-1AT3 module and another end to the Tx port on the device to be connected;Step 3: Check the behavior of the LINK LED on the MIM-1AT3 panel. It is OFFwhen fault has occurred on the link and signal is out of synchronization. In thiscase, please check the link.MIM-1POS ModuleIntroduction MIM-1POS represents the 1-port SDH/SONET interface module. It supportsinterface rates up to 155.52 Mbps (STM-1/OC-3).The MIM-1POS can use the protocols such as PPP, Frame Relay and HDLC at thedata link layer and IP at the network layer. It allows direct transmission of packetsover SONET/SDH. It supports:■ Four SFP types: multi-mode short-haul (1310 nm), single mode medium-haul(1310 nm), single mode long-haul (1310 nm), and single-mode ultra-long haul(1550 nm).■ 155.52 Mbps fractional interfaceTable 70 Description of the LEDs on the MIM-1AT3 panelLED DescriptionLINK OFF means no link is present; ONmeans a link is present.ACT OFF means no data is beingtransmitted or received; blinkingmeans data is being received or/andtransmitted.