Dialpad FREE - Free business phone system
Dialpad Free is the world's first completely free business phone system. Features include IVR, unlimited voicemail, conference calling, video calling, screen sharing and more. Available now for G Suite users in the SF Bay Area. All others can sign up to be notified of future availability.
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Most exciting features: IVR, call holding, call transfer, unlimited voicemail, conference calling, video calling, screen sharing.
Pros:It's totally free for businesses with up to 5 lines.
Cons:Only available to SF Bay Area for now, but you can sign up to get notified about future availability in your region.