Description The Vodavi STS Basic Key Service Unit (4x8x2) Part Number: 3500-00 Vodavi STS Basic KSU Key Service Unit (4x8x2) Features 4 Caller ID Capable Lines 8 Digital Extensions 2 Single-Line(Analog) Extensions Compatibility: Vodavi 3515-71 & 3516-71 Telephones. (3516-71 requires 1.03 or higher software) Refurbished with 1 Year warranty Call 888-557-5888!
