Product comparison table

Analog Line
Digital Line
SIP protocol
Display
Fixing method
Dimension(cm)
Weight
Compression format
Storage format
Recording trigger
Storage media
Default storage
Supported capacity
No PC required
Display lock
Voice annoucement
Playback on device
Remote control
Power supply
SIP recording
T1/E1
Landline
Analog extension
Digital extension
Voice memo
Conference recording
Radio recording
Environmental recording
Microphone recording
Answering machine