Cisco Desk Phone CP-7841 - Factory Reset Process

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The Cisco IP Phone 7841 is a reliable, enterprise-grade endpoint designed for moderately active users
(like administrative staff or managers) who need high-quality voice communications and efficient call handling.

Here is a quick breakdown of its key features and how to use it.
Core Specifications Feature Details
1. Display3.5-inch grayscale backlit display (396 x 162 pixels)
2. Line Keys4 programmable buttons for lines or speed dials
3. Ethernet Integrated 10/100/1000 (Gigabit) switch
4. Audio Full wide band (G.722) handset and speakerphone
5. Power IEEE 802.3af PoE Class 1 (Very low power consumption)

Factory resetting a Cisco IP Phone 7841 is a straightforward process, but the steps differ slightly depending on
whether the phone can power up normally or if you need to do it during the boot process.

Method 1: Using the Keypad (Hard Reset)
Use this method if the phone is stuck in a boot loop, you've forgotten the admin password, or the menu is locked.

1. Unplug the power source (either the power brick or the Ethernet cable if using PoE).
2. Wait about 5 seconds.
3. Plug the power back in.
4. Immediately press and hold the Pound (#) key.
Keep holding it until the line buttons (the LEDs on the side of the screen) flash amber/orange.
5. Release the # key and quickly enter the following sequence on the keypad: 1 2 3 4 5 6 7 8 9 * 0 #
6. The phone will initiate the factory reset.

Do not unplug the phone until it finishes rebooting and displays the main setup screen.