Telecom's plan to split in two has the green light from the Government and requires only shareholder approval to go ahead.
Communications Minister Steven Joyce said yesterday that he had signed off Telecom's proposal on how assets would be divided if it splits up later this year.
Joyce said Government assent to the plans kick-started the biggest change in the telecommunications industry in 20 years.
The split is dependent on a shareholder vote, but before this happens, Telecom will issue a booklet to investors detailing the separation. Analysts say the booklet could be out next month.
Telecom proposed the breakup as part of its bid for Government broadband contracts, which it won the bulk of in May.