Call Soft Pro 

An advanced, yet simple-to-use voice mail and fax software for your home or business. Features include: answering machine with mailboxes, fax, Caller ID with customizable and personalized greetings.
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ThePhoneBOT 

Turn your PC into a powerful, multi-line telephone answering machine! Remote Clients for IP call screening, Unique caller greetings. pics & rings for callers. voicemail over the internet. Call log. Email / text message on new call. Trillian plugin.
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