(Adds details on contract)

NEW YORK, May 14 (Reuters) - Verizon Business, a unit of No. 2 U.S. telephone service provider Verizon Communications Inc <VZ.N>, said on Wednesday it has won a contract with the U.S. Department of Homeland Security worth around $678.5 million over 10 years.

Verizon Business said it will provide Internet protocol (IP) and security services, as well as emergency communications services to help the department respond quickly to disasters.

The company said it will help the 22 agencies that are part of the department combine their separate networks onto a common IP network.

(Reporting by Ritsuko Ando; Editing by Andre Grenon, Richard Chang)

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