Description
Maintenance and Troubleshooting
The CP-PWR-7921G-NA Cisco IP Phone Power Supply is designed for easy maintenance and troubleshooting. Below are some steps for maintaining and troubleshooting the power supply:
Maintenance:
- Verify that the power supply is properly installed and connected to a power outlet.
- Ensure that the power supply is functioning properly by monitoring the status indicators on the IP phone.
- Keep the power supply clean and free of dust to ensure proper cooling.
- Replace the power supply if it becomes damaged or fails to function properly.
Troubleshooting:
- Verify that the power supply is properly connected to a power outlet and that the outlet has power.
- Check the status indicator on the IP phone to see if it is properly receiving power.
- Try swapping the power supply with a known good one to see if the problem is with the power supply or the IP phone.
- Check the power supply for any physical damage, such as bent pins or a broken connector.
- If the problem persists, contact Cisco Support for further assistance.
It’s always recommended to check the product documentation or consult with Cisco for specific instructions or troubleshoot the power supply.
Input Voltage and Power Requirements
The CP-PWR-7921G-NA Cisco IP Phone Power Supply has the following input voltage and power requirements:
- Input voltage: 100-240 VAC, 50-60 Hz
- Input power: 12 watts
- Output voltage: 12 VDC
- Output power: 1.5 amps
- Output current: 18 watts
It’s important to note that this power supply is designed specifically for the Cisco 7921G IP phone model and may not be compatible with other Cisco IP phone models. It’s recommended to check the product documentation or consult with Cisco for specific compatibility information.
It’s also worth noting that this power supply is designed to be used with a power injector or PoE (Power over Ethernet) switch, which is necessary to provide power to the IP phone. The power injector or PoE switch must also meet the input voltage and power requirements of the phone.
Compatibility with Cisco IP Phone Models
The CP-PWR-7921G-NA Cisco IP Phone Power Supply is compatible with the following Cisco IP Phone models:
- Cisco 7921G Wireless IP Phone
- Cisco 7920 Wireless IP Phone
It is important to note that this list is not exhaustive and compatibility may vary depending on the specific model and version of the Cisco IP Phone. It is always recommended to check the product documentation or consult with Cisco for specific compatibility information.
It’s also worth noting that the CP-PWR-7921G-NA is an external power supply, and it is not included with the Cisco IP phone. It should be ordered separately if the phone will not be powered through an Ethernet cable.
General Information
- Manufacturer: Cisco Systems, Inc
- Manufacturer Part Number: CP-PWR-7921G-NA
- Brand Name: Cisco
- Product Type: Ip Phone Power Supply
- Product Name: Power Supply
