Perth barrister Lloyd Rayney didn't want an illegal phone tap installed in his home, his Supreme Court murder trial has heard.
Tim Pearson, the man who fitted a phone bugging device in the Rayneys' Como home at Mr Rayney's request, continued giving evidence yesterday.
He told the court Mr Rayney said of any recording device: "It's got to be lawful, it's got to be legal".
It is alleged the device Mr Pearson installed in the home was used to record the private conversations of Mr Rayney's wife, Corryn, who he is accused of murdering on August 7, 2007.
The body of the Supreme Court registrar was discovered in Kings Park on August 16, 2007.
In November 2010 Mr Rayney was charged with his wife's murder. He has denied any involvement in his wife's death.
During cross-examination by Mr Rayney's lawyer David Edwardson, Mr Pearson said he didn't think it was illegal to install a phone interception device in the Rayney home.
He agreed with Mr Edwardson's suggestion Mr Rayney had requested no illegal forms of surveillance device be installed.
Mr Pearson said he first met Mr Rayney when he attended his surveillance business, which operated from a Dalkeith home, where he lived with his parents.
The home was "wired for sound" with surveillance devices, and according to Mr Pearson, Mr Rayney was recorded whilst at the home.
Mr Pearson agreed with the assertion Mr Rayney wasn't "electronically savvy" and had come to him for expert advice.
The court was played two recorded phone calls between Mr Pearson and Mr Rayney, which were obtained by police on September 20, 2007, the day Mr Rayney was named as the "prime and only" suspect in his wife's death.
In the first call, Mr Pearson states: "Major crime squad left a card in my letterbox and they want me to call them".
Mr Rayney asks Mr Pearson to call back.
In the second call, which was made about 15 minutes later, Mr Pearson says: "They (police) just called again. They want me to come down to the station and talk to them. I just wanted to ask you what I should do".
Mr Rayney's response is barely audible, however, the word "computer" can be heard.
Mr Pearson told the court "the reception was bad ... my phone wasn't working properly", but conceded Mr Rayney "said something about the computer".
Mr Pearson said it took nine hours for him to write a statement for police, which was completed after a search warrant was executed on his home on August 29, 2007.
During the search police seized computers and electronic equipment.
According to Mr Pearson, police "promised not to charge" him if he cooperated and made a statement regarding his dealings with Mr Rayney.
"They said: 'Don't worry about the telecommunications office. We're not concerned with that, we're concerned with the murder (of Corryn Rayney)," Mr Pearson said.
He also met with several officers at The Royal Hotel in the months after the search, who shouted Mr Pearson beers.
Mr Pearson said police later charged him with telecommunications offences despite "promising" they wouldn't.
The trial before Justice Brian Martin continues.