When using the Salesforce integration, RingCentral's session timeout setting is 7 days.
Having checked with RingCentral support, this cannot be adjusted. If a user uses the RingCentral for Salesforce integration and does not logout, the Salesforce session will be kept active for 7 days.
The scope of this idea is to permit RingCentral admins the capability to enforce session timeouts at the same intervals as the Salesforce Platform. This helps to ensure adherence to Salesforce Security policies: