Volume and tone configuration include various volume controls. Moreover, you can upload tones to enrich the user experience.
Volumes
To set up volumes, go to the web Device > Audio interface.

Tamper Alarm Volume: Set the volume when the tamper alarm is triggered.
Upload Tone Files
You can customize ringback, door-opening, and emergency alarm tones.
Upload files on the Device > Audio > Tone Upload interface.
Ringback: The tone can be heard when someone calls the device.
Note
File Format: .wav; Size: < 200Kb; Sample Rate: 16k; Bit Depth: 16 Bits.
Ringback Tone
The ringback tone setting prioritizes the playing of local ringtones and determines what kinds of previews the callee can receive.
Set it up on the Intercom > Call Feature > Ringback Tone Setting interface.

Ringback Source:
Remote, Local As Backup: The local ringtone will be played.
When the door phone calls another device, for example, an Akuvox indoor monitor, and the SIP server returns non-183, the indoor monitor will not have any intercom preview.
If the SIP server returns 183, the indoor monitor will receive the video preview without voice.
Local: The local ringtone will be played. Whether the SIP server returns 183 or not, the callee will not have any intercom preview.
Remote:
If the SIP server returns non-183, the local ringtone will be played, and the callee will not have any intercom preview.
If the SIP server returns 183, the SIP server’s ringtone will be played, and the callee will receive the video preview without voice.
Auto Response: When disabled, the device will use the default ringback tone. When enabled, you can upload the customized tone.