Apparently the Linksys SPA941 handsets do not support re-invite. This means after completion of a call transfer the extension number of the extension that performed the transfer is still displayed rather than the external caller ID. Is there a way around this? I have tried selecting and deselecting supports reinvite and replace header on the extensions but regardless of which way it is set it doesn't work. Is there anything else that can be changed, perhaps on the handsets, to get this to work? This feature worked fine with these handsets and the SPA9000 that was previously installed.