Compared to other VoIP services, reviews say Cox Digital Telephone has the best call quality and reliability. However, it's only available in areas served by Cox Communications, and it's more expensive than services like… AT&T CallVantage and Vonage. Extras include call forwarding, priority ringtones, selective call rejection, caller ID and three-way calling. By bundling digital phone with other Cox services, you can reduce monthly rates, so Cox Digital Telephone makes the most sense for those with other Cox services. Cox says that all of its subscribers have E911 service.
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