If you have a landline — and many people still do — there’s always a chance that you will miss an important call when you’re not at home. If you don’t have voicemail service through your phone provider, it’s definitely worth investing in a quality answering machine. Today’s answering machines use an internal memory chip to digitally record your voice messages rather than the old audiotapes of yesterday. A digital answering machine can timestamp your messages, and you rarely have to worry about running out of message space.
A local PBX can work well for larger businesses with a dedicated staff of IT professionals. Since modifying the system and maintaining a high level of security can be complex, novices might not fare well with this avenue.

Before the digital era, he says more than 80 percent of business lines had voice mail. Now, he estimates only a third of office phones have it.”For customers, even the most professional voicemail greeting is impersonal, and may even harm customer experience (millennials, in particular, avoid using voicemail altogether).
No matter how hard you try to have all of your calls answered each time the phone rings, such an ideal situation may not happen all the time. There are some days in business that are busier than others, and the calls will be left on the line. Hence, you can also use your voicemail for reaching out to clients and marketing activities like cold calling.