The US’ Avaya is planning to bid on an Aramco tender worth $70-80m for a unified communications system during the summer of 2011. According to a senior official at the US-based business communications provider, the tender was initially proposed for this year, but internal complications have caused the delay.

The system is to intended to connect all of Aramco’s units and oil refineries, which require telephony and networking services to improve the infrastructure in place.

Thuraya marketing and sales manager Muiz Saad says the tender had been split into three parts, with Thuraya providing tracking and VPN services for Aramco in a deal worth $6m.

Aramco declined to comment.