That is correct
@Zoe Birch for clarity this was called out in the install guide if you are looking for "documentation". For reference, the install guide(s) if you need them.
https://support.8x8.com/cloud-phone-service/voice-integrations/salesforce/How_to_Install_Salesforce_Integration_v3.1_for_8x8_Work_and_Contact_Center
As always please reach out to our support team for any support issues.