When someone calls your business number, you don't really want it to go to your personal cellphone voicemail. Likewise, you don't want non-business calls to hear your entire professional greeting.
The importance of voicemail in the customer care sector has not diminished despite the arrival of newer web technologies. VoIP applications let the businesses use voicemail service with flexibility, as it is. The users need not rely on extension terminals when they use VoIP services. A strong internet connection is a prerequisite and the pre-configured phones can be used – both for calling /receiving calls and for automated custom greetings. IVR feature redirect callers to the right virtual extension where their needs can be addressed. This can be done anywhere through a web portal access and an internet connection.

If you’re going to be out of the office on holidays or vacations, make that known in your voicemail so customers don’t think they’re getting ignored. Nothing is more frustrating to a customer than when they can’t reach you and assume you’re ignoring them.
Of course, your phone rang because someone wanted to get in touch. They got your voicemail because you were busy or just not there. If you section off a block of your day to check voicemails, let the caller know so they can expect a time for you to return their call. People will leave more details if they know someone will check it later.