...
If you upgrade from version 2.8.3 - 2.8.7, seeĀ Upgrading from NewVoiceMedia Vonage Contact Center version 2.8.3-2.8.7 to 2.8.8 in Salesforce
...
If you upgrade from version 2.8.3 - 2.8.7, seeĀ Upgrading from NewVoiceMedia Vonage Contact Center version 2.8.3-2.8.7 to 2.8.8 in Salesforce