Stick to the basics. You aren’t leaving a full-on sales pitch here. This is a hook. You don’t have to go with certain popular click-bait messages (“You won’t believe what we can offer you! Call me back!”). However, you do want to leave your prospect curious. (“Our clients average an 18% increase in sales within the first month of working with us. I’d love to share the information with you.”)
“Hi _________, this is _______ _______ with (your company). You and I haven’t spoken yet, but I’ve been doing some research on your company and I think you’re a great fit for (our networking solutions – your products here). We can provide you with (list of one or two benefits) and I know you’ll be happy if we spend just a couple of minutes discussing how this can help you.

The simple truth is that you need to be more aware of what you’re leaving for other people to hear. Sure, this doesn’t always register as a priority for users, but it’s never too late to reassess your greeting. a. Reading/Speaking in the Imperfect Tone: Tone is absolutely everything. Users don’t want to come off as being too nice, as it sounds insincere, or being too terse, as it can be interpreted as being rude. That being said, striking the right balance is absolutely essential. Your greeting exists as its own entity, and therefore, it should NOT rely on callers’ familiarity with you. Instead, it needs to appeal to the masses. As such, your inflection, i.e. the way you state your name and directions, needs to be both welcoming and firm. b. Injecting Humor & Insincerity: While humor/light heartedness can be welcoming, it can also convey a sense of informality, insincerity, and ultimately unprofessionalism. Why, because you’re not there to lend your humor or to contextualize. Instead, you’re assuming the caller has a working knowledge of your personality to ground the message. Though this might not sound like it’s all that terrible—it can be detrimental. As stated above, one should NEVER rely on a caller’s familiarity with you. Instead, aim to appeal to the masses. Humor is ultimately subjective, meaning not everyone has the same tastes; therefore, someone is bound to be turned off by a quirky or off-color remark. While implementing a light-hearted or even tongue and cheek tone can work, it’s just a really bad idea.
It’s the way that people contact you when you are busy with other clients or customers, and cannot get to the phone. It is often the customers or clients first impression of your business or brand, you need to leave a great impression. The worst thing is for a first time caller, or even a returning customer, to get a short blurb like “Leave a message i’ll call you back”. Or, just a beep after the ring.