Internet Answering Machines

RingCentral
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  Voicemail Caller ID PC or Mac Take Call Message Check Special Features
CallWave Yes Yes PC Yes Email or phone Includes telemarketer blocking, private number screening, a personalised phone number and more. Free for 30 days.
eVoice Yes No Any No Email or phone You get your own dedicated voicemail number. Free for 30 days.
Internet Call Manager Yes Yes PC Yes--Fee Web Free trial only. Ongoing service is for-fee.
Voicemail
Sends the caller to a voicemail messaging system when you are on-line.
Caller ID
Shows you the number of the person calling.
PC or Mac
Indicates the platform the system is available on.
Take Call
A feature which allows you the option of taking the incoming call.
Message Check
The method by which you can check your incoming messages - by phone, on-line, or via the service's software.