Overview

cnSGW-C supports:

  • Attach and Detach failure and error handling.

  • Create, Update, Delete Bearer Request and Response failure and error handling.

  • Radio Access Bearer or Modify Beare Request failure and error handling.

The different types of failures that can occur during the call processing are as follows, except for Session Setup timer:

  • Advance validation failure on request and response.

  • Retransmission timeout.

  • Transaction service level agreement (SLA).

  • Failure reported from peer (UP, PGW, or MME depending on the stage of message process).

For Session Setup timer during attach procedure, following failures can happen:

  • Ongoing PDN establishment and Modify Bearer Request from MME isn’t received for Initial Attach and multi-PDN.