[VoiceOps] Lawful interception with Open-Source

Hi folks, Has anybody successfully achieved an LI implementation on Open Source voice infra (Asterisk, Freeswitch, RTPEngine, etc.)? I understand that we need a vendor (we have one but are open to other options) for the law enforcement integration but we’re trying to avoid using proprietary SBCs for the audio tap. Any advice would be greatly appreciated. Feel free to reach out off list if you don’t want to disclose on-list. Phil