The Cisco Long-Reach Ethernet (LRE) 48 POTS Splitter is a cost-effective high-density device that is ideal for buildings with on-site PBX systems, and where Plain Old Telephone Service (POTS) traffic must co-exist over the same copper wiring. The Cisco LRE 48 POTS Splitter enables the co-existence of LRE and POTS on the same telephone line.