The phone you use to record your greeting – and your surrounding – can turn your carefully scripted greeting into an unprofessional mess. Background noise is terribly distracting, so choose a quiet room or parked car to make your call. Landlines, or a “wi-fi enabled” cellphone call, can provide much better connection quality than a standard cellphone. If you must use a cell phone, be sure to use a high-quality headset for the best clarity.
To improve a a business voicemail greeting, keep these eight rules at the forefront of the creative process: Avoid turning customers off with overused and impersonal phrases like “your call is very important to us..." Avoid leaving customers unsure by not immediately telling them the business, department, and/or person they’ve reached. Avoid leaving customers confused with too many details and complications; just keep it simple. Avoid messages longer than 25 seconds. Do apologize for being unavailable at the moment. Do invite the caller to leave a message. Do tell the caller when they can expect a return call and actually follow through within that timeframe. Do tell the caller about any applicable alternative options of contact and information- website, live chat, email, social media, or emergency numbers. Voicemail Greetings 101

This is the access code a user dials to hear his or her messages. The default code is 123. The remote code is used internally to access a phone’s voice mailbox by pressing the center navigation key, dialing the three-digit code, and then pressing the center navigation key again. Externally, call into the system and let the auto attendant answer the call, and then dial the desired extension number. If the extension is forwarded to voice mail, and the mailbox answers, enter the remote code to access the mailbox.
When you start to record the business voicemail greetings, be sure to pay attention that the professional voicemail is not able to pick background noises that could make your message sound distort and inaudible.