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.
Some networks will provide a special number for you to ring, although with O2 and some others you just have to dial your own mobile phone number and then hit the * key to enter the voicemail system. Again, you’ll need to make sure that you’ve set up a secure PIN for your voicemail to make sure that none of Rupert Murdoch’s minions can hack into your voicemail from the comfort of their desk.

With voicemail all set up, you can now access and listen to your messages. In the Phone app next to the Voicemail tab, you’ll see a badge with a number, which represents the unheard messages you have. To listen to your messages, open Phone app and tap Voicemail at the lower right side of the screen.
When I go to set up voice mail, it asks me to enter a voicemail code, add a 4 digit number and then it asks to confirm that code, I hit done and it tells me that voicemail is currently unavailable, try later.