42 While the adequacy of the warning given by a trial judge in respect of evidence, such as that of Imbriano, must be assessed by reference to the identification evidence itself, nevertheless that question must be considered in the light of the issues which were alive at the trial, both in relation to that evidence, and generally. The evidence of Imbriano, that he believed that it was Ong who was speaking on the intercepted phone calls with Krong, was given in short compass. Equally, that evidence was only subjected to quite brief cross-examination. Two main points were made in cross-examination. First, it was put to Imbriano that, when he met Ong, he had a pre-conception that the person whose voice he had heard on the intercepted phone calls was the voice of the person who he extradited from Sydney to Melbourne. Secondly, it was put to Imbriano that the voice, which Imbriano believed to be that of Ong, was distorted on the tapes. Both of those suggestions were resisted by Imbriano. That evidence was the subject of only brief reference in the final addresses of counsel for the Crown and counsel for Ong. Indeed, in her closing address, the prosecutor's mention of it covers less than half one page of the transcript. By comparison, the section of her address to the jury, setting out the circumstantial evidence linking Ong with the telephone calls which had been intercepted with Krong, occupied more than 30 pages of the transcript. In response, counsel for Ong also addressed quite briefly on that matter. Again he pressed the two points which he had pursued in cross-examination, namely, that when Imbriano recognised the voice of Ong as being that on the tapes, he already had a preconception that that was the case, and, secondly, that the voice which he listened to on the tapes was too distorted to make a viable comparison. The main focus of the address of defence counsel related to the evidence of the police as to the finding of the silver Panasonic telephone. Counsel described that evidence as a 'smoking gun' in the hands of the Crown. He conceded that if the jury accepted that the police found the telephone on Ong's bedside table, then it was 'very strong evidence' against Ong.