Nokia has announced a partnership with Microsoft to deliver music and email to users of its mobile phones, but has ruled out the possibility of building Microsoft's operating system software into its products.

Software supporting Microsoft Exchange Server's ActiveSync protocol for synchronising email, calendar and contact information will be a feature of future Nokia phones, thanks to a deal announced by the two companies at the 3GSM World Congress in Cannes yesterday.

"Part of becoming more IT aware (as a company) is an appreciation for de facto standards, and ActiveSync is the de facto standard," said Nokia Executive Vice President of Enterprise Solutions Mary McDowell, defending the company's decision to bow to Microsoft's might, rather than use its market leadership to push the software giant into supporting open synchronisation protocols.

Support for ActiveSync will allow future phones based on Nokia's Series 60 and Series 80 smart phone software to synchronise information with Exchange servers over the air. Nokia will continue to support the Open Mobile Alliance Data Synchronisation Protocol and its own Nokia PC Suite software, which enable synchronisation between a phone and a local PC.

However, Nokia's collaboration with Microsoft will only go so far. "There are no discussions to develop a Pocket PC phone," said Anssi Vanjoki, executive vice president and general manager of Nokia's multimedia business unit.

Microsoft and Nokia announced another collaboration Monday, working with online music store Loudeye to deliver music to mobile phones.

Nokia will work with Loudeye to build a "white label" music store that mobile network operators can rebrand to sell music to their customers. Future music-oriented handsets from Nokia will play Windows Media Audio files and include Windows DRM to prevent unauthorised copying of music.

The companies will also work to develop a plug-in for Windows Media Player to handle music files in Advanced Audio Coding format and OMA DRM.