Nokia is making the specifications of its mobile TV platform available to operators and service providers, as the mobile handset giant attempts make more devices interoperable with technology that gives access to commercial TV channels via mobile phones.

The move sees Nokia making the the "air interface" specification of its platform publicly available. The air interface specifies how mobile TV terminals interconnect with the network end of the mobile TV platform.

Based on Digital Video Broadcast - Handheld (DVB-H) technology, Nokia claims the solution makes it easy for operators and service providers to roll-out mobile TV services.

Richard Sharp, vice president of rich media at Nokia, said: "Operators and service providers want to know how the interoperability of terminals from different vendors can be ensured.

?By making this interface specification public, we are emphasising our commitment to open standards and interoperability as a means to enable positive market development",

Mobile TV services using the DVB-H technology have been piloted in the U.S, Germany, France, England and across Scandinavia.

Nokia said that commercial delivery of TV to handsets is expected to start in 2006.