Southern Cross Austereo (SCA) has cancelled the Hot 30 show on which the call was aired. It has also suspended all advertising on 2Day FM, suspended prank calls across the company and promised a full review of policies and processes.
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DJs Mel Greig and Michael Christian today spoke publicly for the first time since the death of Jacintha Saldanha.
Saldanha passed the pair on to the Duchess of Cambridge's nurse when the DJs had called King Edward VII's Hospital impersonating the Queen and Prince Charles, and a second nurse gave details of the duchess's medical condition.
SCA chief executive officer Rhys Holleran said: "First and foremost we would like to express our deep and sincere condolences to the family of Jacintha Saldanha for their loss. We are very sorry for what has happened.
"As a leading commercial radio broadcaster, we must ensure that our internal processes and protocols are robust."
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He added: "We don't claim to be perfect and we always strive to do better. We have initiated a detailed and rigorous review of our policies and procedures to inform any improvements we can make.
"We are also providing support to our people who are deeply saddened by this tragic and unforseen event."
The statement further read: "SCA and the hosts of the radio programme have also decided that they will not return to the airwaves until further notice.
"The Company has conducted a review of the process undertaken in the airing of the segment which has found that company protocols were adhered to."
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It continued: "Several attempts were made by the production team to discuss the segment with the hospital, but with no success.
"The segment was referred to an internal review process which included internal legal review and authorisation was granted to broadcast.
"The Company does not consider that the broadcast of the segment has breached any relevant law, regulation or code. The Company will fully cooperate with any investigations.
"SCA is committed to upholding rigorous processes and broadcasting standards. The business is conducting a comprehensive review of company policies and processes."