Nokia has become the latest company to introduce "push" e-mail for smartphones, to allow users to receive corporate e-mail on their handheld devices.
The company has fleshed out its collaboration with IP telephony supplier Avaya with a range of smartphones offering voice over IP and push e-mail.
Popularised by Research in Motion's Blackberry device, push e-mail enables users to send and receive e-mail over the GPRS network from their phones. Microsoft is offering a similar service based on its Exchange 2003 e-mail server and devices that use the Windows Mobile 5.0 operating system.
Nokia's E60, E61 and E70 smartphones are the first from the company to feature push e-mail. Companies that deploy the phones also need to buy Nokia's recently launched Business Centre server.
Business Centre performs the same function for Nokia that Blackberry's server does for Research in Motion's devices and that Microsoft Exchange will perform for devices equipped with Windows Mobile.
The Nokia phones will feature VoIP for mobiles, push to talk and mobile device management.
Corporate users with Avaya or Cisco IP private branch exchanges will be able to connect the devices directly to their networks.
The phones are the first devices to use the Open Mobile Alliance's standard.