Feature Description

Emergency services refer to the functionalities provided by the serving network when the network is configured to support emergency services. These are provided to support IMS emergency sessions.

The MME Emergency Configuration Data contains the Emergency APN which is used for deriving a PDN GW. The MME Emergency Configuration Data can also contain the statically configured PDN GW for the Emergency APN.

cnSGW-C considers calls as emergency when:

  • Create Session request has IMEI only.

  • The Indication flag indicates unauthenticated IMSI and there’s a valid IMSI and IMEI in the Create Session Request.

Note

With an emergency session setup, cnSGW-C rejects any additional PDN request (Create Session Request) sent by the MME.