Telstra Corporation Ltd Chief Executive, David Thodey says attaining an agreement with the government regarding the national broadband network (NBN) was in everyone's interests.

Mr. Thodey says the Telco remains in "deep discussions" regarding the NBN and that any verdict on whether to take part was a "purely commercial issue" for the Company.

Collaborative agreement is the best outcome for Australia, for Telstra and for NBN and the negotiations remained constructive, said he.

The NBN was given green light, when an implementation study was prepared for the federal government by consultants McKinsey and KPMG.

The $25 million study found the NBN could be concluded without the contribution of Telstra, but advocated the government to strike a treaty with the Telco, arguing the deployment would be more cost-effective if Telstra's existing infrastructure was used.

The network would pay for itself within 15 years, the report said, and could be rolled out to more Australians for less than its $43 billion price tag.

The fixed broadband network is still critically important right across this country, Mr. Thodey said. Also taking up of Telstra's 100 Mbps download speed offering in Melbourne had "not been that strong", which he attributed to pricing.

"I see incredible opportunity going forward," Mr. Thodey said.