
3CX
8.3#10 in business phone systemsFrom $300 a yearFree planAndroidiOSWebWindows
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3CX suits businesses that need call handling across web, desktop and mobile platforms, including an auto attendant and voicemail transcription. The free tier is suited to smaller call setups with up to 10 users and four simultaneous calls, while Basic lists 40 extensions and eight simultaneous calls.
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