Yeastar distinctive ring on Grandstream handsets.
For Grandstream we still set the Alert_info up for
Set Distinctive Ringtones for External CallsSet Distinctive Ringtones for Queue CallsSet Distinctive Ringtones for Ring Group CallsSet Distinctive Ringtones for IVR Calls
Set a Tag on the alert info field
Manually setting the ringtones on Handset can be done as below.
Set the rule to be same as you have tagged the alert info field as above.
or
Using a custom script
Use the following script, setting the Alert info Tag and the ringtone to use
Create Custom Template
1.Create Custom Template
Choose Template Type as "Advanced"

2.Add Custom parameters
<item name="account.1.ring.match.1">
<part name="callerId">ivr</part>
<part name="ringtone">7</part>
</item>
<item name="account.1.ring.match.2">
<part name="callerId">external</part>
<part name="ringtone">6</part>
</item>

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