Going away for vacation or leaving the office unattended shouldn't stress you out. That's why OnSIP designed voicemail greeting setup to take only a handful of steps.
Note: a desk phones' voicemail greeting can only be recorded via phone, there is no way to upload or download a greeting through the online panel.

When you want callers to leave a message, make sure your voicemail greeting indicates that. Be sure to keep your greeting short and direct, and include the info you want to capture.
I have a confession to make: I haven’t recorded a new voicemail greeting since 2014. In the past four years, I (hopefully) have become more articulate, poised, and self-assured. But hear my voicemail recording, and you’d think I was still new to the work world, a little unsure of myself — and probably not an authority. Obviously I need toupdate it. And if you haven’t changed your voicemail greeting in over a year, you’re likely in the same boat. After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever’s listening to it to continue the relationship. A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction. With that in mind, I’ve written 18 unique voicemail greetings for every situation. Pick your favorite, practice a few times, then record your new voicemail.