H3C SR6608/6604 Routers Installation Manual Chapter 1 Router Overview1-39Note:For the installation of the power lightning arrester, refer to section 5.7 “Installing aPower Lightning Arrester (Lightning Protection Busbar) (Optional)” in Chapter 5“Installing the Router”.1.4.6 Signal Lightning Arrester (Optional)Generally, you need to connect a signal lightning arrester (namely, a transientover-voltage protection) before connecting a signal cable to the router. This can protectelectronic devices against surge over-voltage resulting from lightning strokes and otherinterferences, and minimize impact on the router.The device supports three types of signal lightning arresters:z Voltage-limiting protection parts-signal lightning arrester-maximum dischargecurrent 2.5KA/protection voltage 25V--SMB-75J/SMB-75J-1W-10Mbps.z Voltage-limiting protection parts-signal lightning arrester-maximum dischargecurrent 2.5KA/protection voltage 25V-BNC-75K/BNC-75K-10MBit/s.Voltage-limiting protection parts-signal lightning arrester (U port)-maximum dischargecurrent 3KA/common mode: 400 V/differential mode: 170V-RJ11Note:For the installation of the signal lightning arrester, refer to section 5.8 “Selecting andInstalling a Signal Lightning Arrester (Optional)” in Chapter 5 “Installing the Router”.1.4.7 System SoftwareThe device uses the Comware V5 software platform, H3C's core software platform.Based on the IPv4/IPv6 dual stack, the Comware V5 software platform integrateslink-layer protocols, routing, Multi-Protocol Label Switching (MPLS), Virtual PrivateNetwork (VPN), quality of service (QoS), security, and other data communicationsfeatures. It is scalable and portable because it adopts a componentized architectureand effectively encapsulates and masks different operating systems and hardware.The Comware V5 software platform is the basis of all series of IP network products ofH3C.