BAP120 engineering rules and guidelines 65The BAP120 tries unsuccessfully to obtain an IP address from theDHCP server on the BSR222. After 60 seconds, it defaults to an IPaddress of 192.168.1.136.—End—If you have more than one BES or BAP120 in your SMB network, IPaddresses must be manually configured according to the ranges specifiedin the "IP addressing for SMB devices and DHCP" (page 19) table.BAP120 engineering rules and guidelinesThis section provides engineering guidelines to assist you in determiningequipment requirements, placement devices, and third-party wireless fidelity(WiFi) compatibility for the BAP120.Device quantitiesThe following three tables provide engineering guidelines around thenumber of PoE devices that can be supported on a given SMB site,depending on the equipment requirements.The SMB devices such as IP phones and BAP120s use PoE poweringmethod for ease of cabling, hence avoiding the requirement for multipleac/dc power adapters. BES devices offer 12-port and 24-port PoE versions.These tables also account for the number of BAP120 devices deployed toa given site. Based on product engineering limits, the tables offer a quickmethod of determining equipment quantity requirements for IP phones, WiFiclients, and other legacy phone equipment that is supported for a givenSMB equipment deployment scenario.More IP phones for each BAP120 device can be deployed if you useAC/DC power adapters to connect equipment to BES non-PoE ports. TheBAP120 also supports Wireless Bridging. Wireless bridging can be usedto reduce the requirement for wired ports from BES devices and allowsyou to daisy-chain access points wirelessly. For engineering rules for suchdeployments, contact Nortel technical support.Port count and device support tableAvailable portsNon-PoE PoE Uplink BAP unitsBES devices, 48 ports, 24 with PoE1 24 24 1 01 24 24 1 11 24 24 1 2SMBSmall and Medium Business Solutions Overview and Configuration GuideNN47910-200 02.01 StandardRelease 1.00 11/22/2006Copyright © 2006, Nortel Networks Nortel Networks Confidential.