How many watts does a Cisco IP phone use?

The phone supports IEEE 802.3af PoE (Class 1); power consumption does not exceed 3.84 watts.

What is Kem on a phone?

The Cisco IP Phone 8800 Key Expansion Module (KEM) expands the capabilities of your IP Phone, providing it with additional physical keys that can be programmed with additional directory numbers, speed dial or programmable feature keys.

What is key expansion module?

Key expansion modules add extra line appearances, speed dials, or programmable buttons to the phone. The programmable buttons can be set up as phone line buttons, speed-dial buttons, or phone feature buttons. But Simplified dialing is not supported on expansion modules.

How much power does a Cisco phone draw?

For example, a Cisco phone that is classified as Class-3 in the phone hardware actually needs 7.5 watts. A non Cisco switch will budget the full 15.4 watts for this phone and switch port, essentially wasting 7.9 watts of power.

How much power does an IP phone use?

There a very few IP phones in this category. Class 2 devices consume 4 to 7 watts. A majority of the IP phones fall into this group. Class 3 devices consume greater than 7 watts.

How much voltage does Cisco IP Phone Use?

Power 100 to 240 VAC, 50 to 60 Hz, 0.5 A—when using the AC adapter. 48 VDC, 0.2 A—when using the in-line power over the network cable.

Do IP phones need PoE?

IP cameras rely on PoE. Because the PoE-powered devices can be put at any location with a data cable in and around a building, it’s easy to install or move cameras as necessary.

How much power does a PBX use?

Depending on the chosen appliance to run your PBX on, the average consumption is only 6-18 watts. Mini PCs are based on low-energy-consuming embedded hardware, minimal heat development and passive cooling furthermore lead to zero noise emission.

How do IP phones get power?

Most of our laptops, cell phones, and tablets run on their battery power. VoIP phones on those mobile devices will still work fine without AC power when you experience power outage.

Does VoIP have voltage?

Sometimes 24 volts DC is sent, but the VoIP phone will communicate its power needs to the ethernet switch and then the switch will send the correct voltage to the phone. This is why it’s safe to hook a normal computer up through a POE ethernet switch.