Our IS got stopped itself and we saw the below logs in the server.log file.
Adapter Runtime: Error Logged. See Error log for details. Error: [ART.117.4002] Adapter Runtime (Adapter Service): Unable to invoke adapter service pub.sap.transport.ALE:OutboundProcess.
[SAP.116.9551] Adapter service error: (102) RFC_ERROR_COMMUNICATION - CPIC-CALL: ‘CMSEND’
Any idea what might be the cause of the issue. I can also see a core file in the IS home directory, but i am not able to analyze it.