Motorola reached a settlement with Digital Technology Licensing (DTL) in their dispute over cellular phone technology, according to a patent licensing firm representing DTL. Terms of the settlement were not disclosed.

Specifically, the patent at the center of the case is the Digital Output Transducer owned by DTL, according to General Patent Corporation International (GPCI), the exclusive licensing agent of DTL. The transducer is an essential part for adaptive multi-rate (AMR) codec and other cellular communications standards. The patented technology also is used to assure backward compatibility of cell phone handsets and base stations. Other applications include Bluetooth headsets.

“The settlement with Motorola follows DTL licensing and settlement deals with Nokia, Samsung, Cingular, Ericsson and LG,” said Alexander Poltorak, GPCI’s chairman and  CEO, in a statement. “We are very pleased to have resolved this lawsuit on amicable terms and look forward to licensing the rest of the defendants in the remaining lawsuits.”

DTL also has brought patent infringement suits against Verizon Wireless, T-Mobile and Sprint.