I came across a new Nortel phone I've not seen, an 1165E IP phone. Does anyone know what RLS of software I need to run these? I'm running 1140E's right now on my CS1000 (RLS 4.5), programming them as i2004's. The 1165 has more line buttons though (8 vs 6 on the 1140). I'm hopefully going to be doing a PBX upgrade sometime the second half of this year to whatever is latest (7.5 or 8 maybe?) but would love go get a few of these phones before then. Let me know, thanks!