Rehearse your greeting a few times before you press record. Plan your pauses and select natural places to take a breath. If you are recording directly into your phone don't hold it to your ear like you are talking on the phone. This can produce a muffled tone. Hold the phone out in front of you a few inches from your mouth for the clearest recording. This may require some trial and error. So playback your greeting and make necessary adjustments on your re-record.
The duration of the global semiconductor shortage just keeps getting shorter -- and with it, investor confidence in semiconductor stocks like Advanced Micro Devices (NASDAQ: AMD), which closed down 6.1% Tuesday. If you recall, market researcher International Data Corporation (IDC) predicted last week that the dearth of semiconductors, which has hamstrung markets for everything from PCs to automobiles over the past year, will begin easing later this year. Speaking at the Code Conference in Beverly Hills, California, reports CNBC, Su pointed to a number of new semiconductor manufacturing plants coming online over the next few months as evidence that, while supplies will remain "likely tight" through the first half of next year, the chip shortage may end sooner than some investors expect.

Because you never know the quality of someone’s phone audio or your cell phone service, it's not a bad idea to give your name and phone number twice within your message. The thought being, if the person you called can’t understand who you are or how to call you back, how can they be expected to return your call?
I believe honesty and creativity is the key. Understand that in order to increase your callbacks, you need to pique the prospect’s interest without raising doubts or fear.