Call notification

Last Updated : Sep 28, 2023 |

SIP undelivered call notification

The SIP undelivered call notification feature provides a notification about the undelivered call to the endpoint. Communication Manager initiates the SIP undelivered call notification feature when a SIP endpoint receives a call in one of the following situations:

  • All call appearances are busy.

  • LNCC is activated, and the endpoint is busy.

  • Call Forward Busy or Call Forward All is enabled.

  • Enhanced Call Forward (ECF) unconditional or ECF busy is enabled.

  • Cover All Calls is enabled.