Standalone telephone logger does not need to connect the computer, only connect power to record. Adopt high resistance parallel connection, can record all kinds of analog telephone, audio signaling. Store the calls info in the SD card or SATA hard di...

                      Standalone telephone logger does not need to connect the computer, only connect power to record. Adopt high resistance parallel connection, can record all kinds of analog telephone, audio signaling. Store the calls info in the S...