9SRG200/400 Release 1.5 Configuration GuideChapter 1Getting startedAbout this guideThe SRG200/400 Release 1.5 Configuration Guide describes how to install, configure, andmaintain the Survivable Remote Gateway (SRG) 200/400 Release 1.5.The SRG200/400 Release 1.5 offers business continuity and public switched telephone network(PSTN) failover for voice over IP (VoIP) networks. An SRG provides transparent operation andfeature parity with a main office call server while in normal operating mode. If connectivity withthe call server or wide area network (WAN) is lost, the SRG takes ownership of call control for thelocal sets automatically, and provides internal communications as well as external connectivity tothe PSTN.The SRG200/400 Release 1.5 provides a cost-effective VoIP business continuity solution for smallbranch offices.The SRG200/400 Release 1.5 is supported on CS 1000 call servers only, with Succession 3.0,CS 1000 Release 4.0 or 4.5.The SRG200/400 Release 1.5 uses the BCM200 or BCM400 hardware.AudienceThe SRG200/400 Release 1.5 Configuration Guide is intended for two audiences:• the individuals responsible for engineering the SRG200/400 site and installing the BCM 4.0,configuring it for operation as an SRG200/400 Release 1.5, and connecting it to the network• the individuals responsible for post-installation system administration and maintenance.The SRG200/400 site engineer and installer must be familiar with BCM 4.0 hardware andsoftware, and IP telephony and VoIP trunk configuration on the BCM 4.0.AcronymsThe following is a list of acronyms used in this guide.Table 1 Acronyms used in this guide (Sheet 1 of 2)Acronym DescriptionACR Alternative call routingANBWM Adaptive network bandwidth managementASM Analog station module
