Vonage Holdings Corp., the beleaguered provider of Internet-based telephone service, said Oct. 25 it has settled a patent lawsuit brought by Verizon Communications Inc. for a maximum of $120 million.

The lawsuit, along with two filed by other phone companies, had cast a heavy shadow over Vonage’s future. The company’s service enables subscribers to connect their phones to their broadband connections for about $25 a month using a Vonage adapter.