1. Call the UCSF voicemail system using the number appropriate for your location, then log in to your mailbox. From a Campus phone, call x66000 or press the Message Waiting button on your phone. From an off-campus phone, call 415-476-6000 and press the Star key when you reach the voicemail system. You will be prompted for your ID; enter your 5-digit phone extension. From a mobile phone, call 415-476-6000 and press the Star key when you reach the voicemail system. You will be prompted for your ID; enter your 5-digit phone extension.
Increase the odds of getting a call back by mentally composing your message before each call. And remember, people hate it when callers state their name and phone number too quickly in voice mail messages – no one wants to listen to a message ten times to comprehend simple information. Begin by saying your name and company (if applicable). Then assume the person you’re calling doesn't have your number, so say your phone number twice. If your name is at all unusual, spell it the first time you say your phone number. Talk slowly like you were writing it down yourself. The second time you say your phone number, you can say it at your normal rate of speech. A gracious phone message is no longer than 30 – 45 seconds. Be pleasant, but also get right to the point. Keep your voice mail message to two points maximum. If you need to share more information, then say you will send an e-mail message with the rest of the details. Leave a specific message. There’s nothing more frustrating than a voice mail that says, “Hi, it’s me. Call when you can!” Even if you’re just calling to say “Hi”, tell them that in your message. End on a high note! You don’t necessarily need to say “Goodbye” at the end of a voice mail, because you didn’t really talk to anyone. Instead, try something like, “Look forward to talking* with you!”

Ooma gives you several convenient ways to change your voicemail settings. You can access your initial setup by pressing the "play" button on your Ooma device.. You can then change your voicemail settings (including your greeting and name) by connecting to your voicemail and then hitting the option "2" from the main voicemail menu. Users can also access voicemail …
Recording the message yourself doesn’t mean it can’t be done professionally. You can still get studio time with an experienced audio engineer. Studio time can cost $60-$100 per hour, which may or may not come with an engineer. If you need to hire one, their rates are usually $100-$300 an hour. Mind you, their feedback, professional experience, and editing capabilities are typically well worth the extra expense.