If there are no other call routing rules activated, configure "Call Forwarding No Reply" in such a way that calls are forwarded to your Standard Voice Box. To ensure access to Remote Inquiry even after changes to Call Forwarding Unconditional, open the Call Routing Manager and prioritize the Call Forwarding rule "Call Forwarding No Reply" by putting this rule at the beginning. During the welcome announcement the caller can use the *- key to reach the Remote Inquiry menu.

If call routing rules are enabled, please make sure to include the remote inquiry option. See also https://help.enreach.com/cpe/13.30/CRM/Swyx/en-US/index.html#context/help/remote_inquiry_$.

If no call routing rules are enabled, and the immediate call forwarding is changed, (e.g. from the Standard Voice Box to another number), the caller can no longer perform a remote inquiry, i.e. he/she can no longer change or disable the immediate call forwarding remotely. To avoid this, create a call routing rule and place it before the immediate call forwarding in the list of rules. Such a rule could be, for example, always forward calls to Voice Box that are made from your mobile phone. In this manner, you will always be forwarded to your Voice Box and thus to Remote Inquiry when you call from your mobile phone.