By
eHow Electronics Editor
Difficulty: Moderately Easy
Step1
Advise the other person that you will call the third person and activate the three-way calling feature.
Step2
Place the existing call on hold by depressing the "flash" button located on your phone. Your existing caller is now on hold.
Step3
Depress the phone on/off hook, if you phone does not have a "flash" button. Depress the phone hook and quickly release it so you do not disconnect your caller. This will place that call on hold.
Step4
Listen for the dial tone.
Step5
Dial the phone number of the person you want to add to your three-way call. When the person answers tell them you are going to hold a three-way call.
Step6
Press the flash button now and all three people are on the call.
Step7
Click the phone hook quickly if you used this method. Make sure you do this quickly to avoid disconnecting your parties. All three people are now on the call.