- HD 1080
- Runtime: 60m.
- Status: Ended
0
- Languages: ko
- Country: South Korea
- Director: Shin Yong Hwi
- Stars: Lee Ha-na, Song Seung-heon, Son Eun-seo, Kim Joong-ki, Baek Sung-hyun
- keywords: detective, obsession, investigation, call center, murder, death, policewoman, mad dog, suspense, special power
- Production_studio: Content K, Studio Dragon, KEYEAST
- Seasons: 4
- Episodes: 58
- First air date: 2017-01-14
- Last air date: 2021-07-31
- providers: Paramount Plus, Paramount Plus Apple TV Channel, Paramount+ Amazon Channel, Rakuten Viki
- The Voice is featured in the top rankings of 2017
- #56 in Top Crime Series of 2017
It's 3 minutes for hearers, but a life for the callers. A crime thriller chasing even the slightest sounds to rescue people's lives calling for urgent help.