3Com 3C13755-US - Router 5642 Installation Manual

Also see for 3C13701: Installation guide Quick reference guide Installation guide Getting started guide Module guide

Contents

3Com 3C13755-US - Router 5642 Installation Manual Manual pdf 30 page image

28 CHAPTER 2: INTRODUCING ROUTER 5012 SICS1-Port Fractional T1SICThe main functions of the 1-Port Fractional T1 SIC are:■ Transceiving and processing the T1 data stream.■ Providing channel T1 (CT1) access.■ Providing two types of loopback modes, remote loopback and local loop,which facilitate effective and flexible debugging.■ Supports fractional T1 operation that can be performed once to bind channelsinto one channel with a speed of nx64K or 56K, where n=1-24.Figure 28 illustrates the 1-Port Fractional T1 SIC.Figure 28 The 1-Port Fractional T1 SICFeatures Table 23 lists features of the 1-Port Fractional T1 SIC.Front Panel and LEDs Figure 29 illustrates the front panel of the 1-Port Fractional T1 SIC.Table 23 Features of the 1-Port Fractional T1 SICFeature DescriptionConnector type RJ-45Number of connectors 1Interface standard G.703/T1.102, G.704Interface rate 1.544MbpsCable type T1 cable (100-ohm standard shielded networkcable)Operation mode CT1 and ISDN PRI (supported only by 1-PortFractional T1 SIC)FT1 Supported network protocolIP Novell IPXSupported service BackupTerminal access ISDNSupported protocol PPPMP HDLCLAPB Q.921, Q.931 and Q.SIG (supported only by1-Port Fractional T1 SIC)