In our corporate headquarters we are looking at replacing a 20+ year old phone system and making the switch to VoIP. This is a high rise where we have some limits around options for cabling. Currently we have some 'opportunities' for improvement, where about 95% of our data cabling is out of spec for Cat5e. We may be moving out of the building in 5 years so management is pushing back on rewiring at this time. We do have some minor issues with the data cabling, but not enough to force managements hand.
One the VoIP vendors recommended using Long Reach Ethernet. I have just started researching this and I am rather skeptical. Does anyone have any experience with any solutions/implementations of Long Reach Ethernet?