For most users: 👉 Download ringout.wav from online, or record a 5-second clip of a classic phone bell with bass boost. Normalize to -1dB in Audacity. Save to MicroSIP\Ringtones\hot.wav . Assign in Sounds tab. Done.
: It supports advanced codecs like G.722 (HD Voice) and Opus, which provide crystal-clear audio if your SIP provider supports them. How to Set a Custom Ringtone
