Vonage and Nortel Networks have ended their long running patent litigation and allowed for cross-licensing of each other's technology.

No money will change hands in the agreement. The settlement involves a cross-license to three Nortel and three Vonage patents, and dismisses claims relating to past damages and the remaining patents. The settlement is subject to final documentation.

The deal will end a long-running and expensive series of court actions between the two companies. Early last year, Vonage settled four other patent suits, and in each case, promised to pay the other side for prior use of its products.

Vonage had a tough year last year, having to pay $39 million as part of a settlement to AT&T, and $200 million to Sprint Nextel and Verizon Communications.