SAP Message BCOMEC032 - There are currently no calls for extension &1

Diagnosis
No calls currently exist for the extension &V1&.
Further information on the external software component:
V3
The server concerned is &V1&.

Procedure for System Administration
The error can occur in 2 different places:
1. In the connected gateway
2. In the underlying CTI software
In this case the error occurred in (4&).
The return code for the underlying CTI software is: &V2&