Former Telecom chief executive Theresa Gattung's memoir will be published on March 12, the publisher says.

Random House says the book, Bird On A Wire, is being promoted as "no-holds barred" in its account ofher 11-year career at Telecom.

Ms Gattung was aged 37 years when she was appointed chief executive in 1999, taking over from Roderick Deane, who became chairman.

She headed the company from 1999 to 2007 and once infamously admitted the company had used confusion as a marketing tool to maintain profit.