a common problem for all speaker phones whether you're at your office or in your car is the mic-interupt feature. This is a necessity for most phones to eliminate feedback, cutting off the speaker as soon as you begin to speak. This unit does the best job of keeping this irritation to a minimum while stille using the speaker. of course, if it's still too much of a walkie-talkie sinsation to you, you can always use the included ear-piece to cut it out all together.