1. The way to get the telephone recording should be legal. The recorder shall not be forced or coerced, and any evidence obtained by means of illegal restriction of personal freedom, kidnapping or threat shall be invalid.
2. The object of the record must be the debtor or the obligor, that is, the person recorded must be a party in the legal relationship.
Legal basis: Some provisions of the Supreme People's Court on evidence in civil proceedings.
Article 68 Evidence obtained by infringing upon the lawful rights and interests of others or violating the prohibitive provisions of laws cannot be used as the basis for ascertaining the facts of a case.
Article 70 In the third paragraph, if the audio-visual materials obtained by legal means, supported by other evidence, or the copies checked with the audio-visual materials are correct, but there is no evidence to the contrary, the people's court shall confirm its probative effect.