Skip to content

Reverse Polarity Adapter Cable for Cisco IP Phones


This Cisco Reverse Cable reverses the voltage for Cambium, Canopy, and pre-standard phones when used with the POE-8 and POE-12 injectors.

It reverses the positive(+) and negative(-) poles in the 2.1 mm dc connector, when used with our 48v power supply to power any of these phones:

  • Cisco IP Phone 7902G
  • Cisco IP Phone 7905G
  • Cisco IP Phone 7910G
  • Cisco IP Phone 7910G +SW
  • Cisco IP Phone 7912G
  • Cisco IP Phone 7940G
  • Cisco IP Phone 7960G
  • Cisco IP Phone 7962G
  • Cisco IP Phone 7975G
  • Cisco IP Phone 7985G

Mix new and old Cisco phones on the same injector panel, use any ethernet switch and add PoE to that switch at low cost. Budget 6 watts per phone.

Product Specifications

Connector Types 2.1mm female DC barrel, 2.1mm male DC barrel
Dimensions 6 in.
Max Voltage 48 volts
Operating Humidity 5% to 90%


Have a Question?

Be the first to ask a question about this.

Ask a Question