Clear One 910-158-555 Max Ex Expansion Kit Expansion Kit For the max Ex and the Max Attach To be used with the Clear One 910-158-500 and 910-158-500-00 and 910-158-500-01 and 910-158-500 Includes: MAX phone unit (1) 12' Cat. 5 cable (1) Documentation CD & Quick start guide Includes phone and connecting cable to expand MAX EX room coverage (base not included)