As part of the multi-year agreement, Sun will become the "prime platform partner and integrator of choice" for Alcatel's next-generation IP-based core network offerings.
The deal will see the two firms combine the carrier-grade capabilities of the Solaris or Linux operating systems with Alcatel's AdvancedTCA blade architecture standard.
Alcatel announced earlier this year that this standard framework will gradually be applied across its entire portfolio of core network offerings.
The agreement includes a joint R&D co-operation clause which will initially focus on the Alcatel offerings already using Sun's server and operating system technology.
Both firms already co-operate closely in the carrier space with Alcatel deploying Sun's carrier grade Netra servers within its Mobile NGN systems, part of the Alcatel 5020 Softswitch range of products.
Sun's server technology is also used in the Alcatel 5020 Softswitch system for VoIP applications in fixed networks, as well as in Alcatel's Open Service Platform for Intelligent Network services.
Jonathan Schwartz, president and chief operating officer at Sun, said: "The next wave of IT innovation will occur on the network and through network services, and Alcatel's leadership in key telecom market segments will clearly open new doors to Sun and its ISV partners."
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