Bundle deals for home phone service?

You'd have to call customer service to get that answer if it's not on their website. 

ATT Home Phone service is a VOIP service with unlimited nationwide calling using your ATT gateway phone port on back of gateway.

Max two lines, intro price of $24.99 per month plus fees / taxes for 12 months. After 12 months price increases to $34.99 per month plus fees / taxes. 

from the fine print details of the offer…

Unlimited North America Plan: Pricing ($24.99/mo per line; maximum of two) for the first 12 mos only for new residential AT&T Phone customers only. After 12 mos., or loss of eligibility, then prevailing rate applies, (currently $34.99/mo) unless cancelled or changed prior to the end of 12 months. Pricing subject to change. Must maintain all bundled services to receive continual discount on plan. Includes unlimited nationwide calling within the U.S., plus calls to Canada, Mexico and U.S. Territories. International calls billed at additional per minute rates. An additional per minute rate may apply for international calls terminating on mobile phones. Pricing excludes taxes, additional fees and other charges, including a monthly Administrative Fee, Regulatory Cost Recovery Charge. See att.com/fees for details.

AT&T PHONE: AT&T Phone service is provided over an Internet Protocol connection and powered by electricity in your home. Service may require AT&T Internet (min 1.5Mbps or higher). Unless you provide any necessary backup battery power, AT&T Phone service, including 911 dialing, will not function during a power outage. See att.com/batterybackup more details.

Offers may not be combined with certain other promotional offers on the same services and may be modified or discontinued at any time without notice. Other conditions apply to all offers. 

NOTE… may have a $99 installation charge if require tech install to your house wiring.