210 IP Phone Key Expansion Module (KEM)IP Phone 2004If only one IP Phone KEM is configured in LD 11, but two IP Phone KEMsare detected on an IP Phone 2004, the Terminal Proxy Server (TPS)assigns keys 56 to 79 to the second IP Phone KEM. An error messagedisplays to alert the administrator that the hardware configuration does notmatch the administered configuration.If two IP Phone KEMs are configured in LD 11 but only one IP PhoneKEM is responding, the TPS assigns keys 32 to 79 to the single IP PhoneKEM (using the Shift key functionality). An error message displays toalert the administrator that the hardware configuration does not match theadministered configuration. When a second IP Phone KEM is detected,the TPS changes the key assignments to display across both IP PhoneKEMs, as expected.Virtual OfficeWhen a Virtual Office (VO) login occurs from an IP Phone 2002 or IP Phone2004 that does not have the same number of IP Phone KEMs respondingas configured on the IP Phone used to log in, call processing may terminateon a key that is not physically available. In other words, the IP Phone ringsbut the call cannot be answered.During the VO login process, the existence of any IP Phone KEM is verified.If a mismatch is detected, the login proceeds normally; however, an errormessage is generated to alert the administrator of the mismatch.FirmwareThe IP Phone KEM firmware is not downloadable. if the IP Phone KEMfirmware must be upgraded or changed, the IP Phone KEM must bereplaced with a new IP Phone KEM containing the updated firmware.Nortel Communication Server 1000IP Phones FundamentalsNN43001-368 02.01 StandardRelease 5.0 7 December 2007Copyright © 2003–2007, Nortel Networks.