amazon.com has the Klein Tools Scout Pro 3 Cable Tester Kit for Voice, Data & Video Cables for $65.99 with free shipping.

• Cable tester tests voice (RJ11/12), data (RJ45) and video (coax F-connector) terminated cables
• Measure cable length up to 2000 feet (610 m)
• Test for Open, Short, Miswire or Split-Pair faults