In the latest developments of the battle of the giants, Vodafone has released a product aimed squarely at Telecom's home line market.

Vodafone at home replaces the traditional fixed-line home phone with a new device. Customers simply plug their existing handsets into the at home box and carry on making calls from their existing phone number

Vodafone at home National costs $39.95 per month and includes unlimited calls to any New Zealand land line number without incurring extra toll charges.

Calls to Vodafone mobiles in New Zealand will cost 39 cents per minute and calls to other mobiles are 55 cents per minute. International calls are based on Vodafone’s existing fixed-line offers.

In addition, any Vodafone fixed line international calling offer will also be offered to Vodafone at home customers.

The at home box will retail for $99 when signing up to an at home plan and will be on sale from today in three Vodafone stores - Sylvia Park in Auckland, Lambton Quay in Wellington and Colombo Street in Christchurch.

(Read Chris Keall's hands-on review here.)