Platinum Equity-owned Matrix Telecom Inc. has completed the purchase of Excel Telecommunications customer contracts and business assets.

The CLECs, based in the Dallas area, did not disclose the financial terms of the deal, which was announced in March. Both companies offer voice and data services to businesses and consumers.

Matrix, which bought bankrupt Trinsic Communications the former Z-Tel Technologies in 2007, aims to become the highest-quality, most affordable choice for wholesale voice services in the telecommunications industry,” said Charles G. Taylor Jr., president and CEO of Matrix, in a press release. Matrix and Excel are a perfect fit,” he added, thanks in part to complementary network coverage.

Matrix now will concentrate on integrating Excels operations. Itll keep selling Excels services under their current brand names.

Excel was owned by Denham Capital. Excel runs on Veraz Networks softswitches; Veraz earlier this year merged with Dialogic and observers expect the combination to produce a strong competitor in the IP infrastructure market.

The Excel transaction marked Matrixs third merger in four years. The company bought a small business group from Global Crossing in 2006; took over Trinsic assets in 2007; and now has bought Excel.

Matrix is licensed as a facilities-based CLEC and long-distance provider in 49 states plus the District of Columbia. It has 200 employees. In addition to its headquarters in Dallas, Matrix also has operations in Rochester, N.Y. and Atmore, Ala.