To make and receive calls using NewVoiceMedia in Salesforce, you must have a Salesforce API user set up and you must link NewVoiceMedia to this user. For information about linking NewVoiceMedia to a Salesforce user, see Linking NewVoiceMedia to a Salesforce account. To access and use the NewVoiceMedia API correctly, the API user must have permissions to various objects, fields, pages and Apex classes included in the NewVoiceMedia package. The ContactWorld API user permission set includes all the permissions that the API user needs.
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You must also give your API user access to some standard fields on the Task object (bold permissions are not included in Standard User profile):
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Finally, you must provide the correct access to any standard or custom fields which are referenced through configuration. For example, give the API user the necessary permissions to read from any fields you configure through custom settings.
In all cases, clone the ContactWorld API user permission set, add the required permission or permissions, and then assign the modified permission set to the API user.
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