One pro: VoIP service costs less. Con: Power outages
Cost: VoIP service costs much less than a landline.
Call quality: VoIP's reception varies, but can be better than that of a cell phone.
Feature-rich: VoIP has lots of features, including free long distance, caller ID and voice mail. Other features cost extra.
Power outages: Landline service works even when the electricity is off. VoIP won't work in a power outage.
Broadband required: You can't get VoIP without a high-speed Internet connection.
911 service: Landlines, cell phones and Ooma are connected to 911. Other VoIP services require you to register your address.
Faxing woes: Fax machines might be slower or not work at all with slower broadband speeds.
No guarantees: VoIP companies won't guarantee secure and reliable connections, although some will refund most costs within 30 days.
Power-hungry: Some VoIP systems require the computer to be on to receive or make calls.
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