SAP Message BCOMEC012 - The specified IP address &1 is not valid (network error)

Diagnosis
When a connection is registered the IP address is also transferred tothe external software component. In the process, a network erroroccured for your IP address &V1&.
Further information on the external software component:
V3

System Response
The function was not executed.

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 (&V4&).
The return code for the underlying CTI software is: &V2&