AT&T CallVantage® Voice over IP Service

Get big-business calling features and services at a price you can afford. All you need: a high speed Internet connection, ordinary phones, and AT&T CallVantage® for Small Business. Learn More about how we can help your business, with service on up to four lines.

Unlimited long distance and local calling $50.00 per month(1) per line - Launch Interactive Demo Launch Interactive Demo. Need More Than 4 Lines?. Order Up To Four Lines.

1High-speed Internet required, charges not included. There is a $29.99 activation fee and a $9.95 non-refundable shipping and handling fee applicable if the 2 line Telephone Adapter is shipped to you. The non-refundable shipping and handling fee for a 4 Line Telephone is $14.95. For 1-2 Line Customers: If you obtained the Telephone Adapter from AT&T at no charge, and you cancel or disconnect your service or order for service within 1 year of ordering date the Telephone Adapter must be returned and received by AT&T within 16 business days of cancellation date. If the Telephone Adapter is not received by AT&T within 16 business days, a $29.99 disconnect fee applies. For 3-4 Line Customers: If you obtained a 4-Line Telephone Adaptor directly from AT&T at a charge and you cancel or disconnect your service or order for service within 1 year of the ordering date, the Telephone Adapter may be returned and received by AT&T within 16 business days to receive a refund of the amount paid to AT&T for the adapter. 3-4 Line Customers canceling or disconnecting service less than one year from date of order will not be assessed any additional charges if the Telephone Adapter is not returned and will receive no refund of purchase costs. International calls billed at additional per-minute rates; not included in free offers. Universal Connectivity Charge and other state and federal taxes and surcharges apply. Service will not function during high-speed Internet and/or electrical power outages. Not compatible with security systems (burglar or fire) or medical monitoring equipment. Billing is by credit card only. Not available in all areas. Service's 911 calling operates differently from traditional wireline 911 service. For correct emergency call routing, the Service Address provided to us MUST correspond to the physical location of your AT&T CallVantage® service phone. Click "911: It's Different" button above for important information about 911 service. Click "International Calling" to obtain international rates. When dialing into service remotely, you may incur additional access charges for non-local calls, hotel service charges or cellular mobile charges. International calling: Higher rates may apply for calls terminating on mobile phones or other wireless devices.