Service Stream still counting damage done by Syntheo JV TELECOMS construction company Service Stream has extended its trading halt for another fortnight as the company continues to evaluate how its National Broadband Network construction venture Syntheo has damaged its profit guidance. Shares in Service stream have not traded since June 13 when the company voluntarily suspended its shares from the ASX to consider the future of Syntheo, its joint venture with Lend Lease. The company had requested a trading halt until today but notified the ASX this morning that it required a further two-week suspension to July 8. The suspension is understood to have been triggered by ongoing problems with Syntheo which is one of the largest contractors working on the rollout of the National Broadband Network. Service Stream is thought to be eager to exit its 50:50 venture and hand control of the entity to Lend Lease. In March, Syntheo was forced to hand back the design and construction responsibilities for building the NBN in the Northern Territory, a four-year contract that in conjunction with connecting buildings in South Australia was worth up to $341 million. There are ongoing concerns that the NBN Co will remove more work from Syntheo in South Australia and Western Australia. Shares in Service Stream have been battered since March, shedding more than 60 per cent of their value when Syntheo had to hand back its lucrative Northern Territory NBN contract. The company's shares were suspended at $0.14 upon commencement of the trading halt, down from a January yearly high of $0.45.