Cisco Cisco Packet Data Interworking Function (PDIF) Prospecto
APN Configuration Mode Commands
emergency-apn ▀
Cisco ASR 5x00 Command Line Interface Reference ▄
1285
emergency-apn
Configures this APN as an emergency APN for Voice over LTE (VoLTE) based E911 support.
Product
GGSN
P-GW
SAEGW
Privilege
Administrator
Mode
Exec > Global Configuration > Context Configuration > APN Configuration
configure > context context_name > apn apn_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-apn)#
Syntax
[ default | no ] emergency-apn
[ default | no ]
Resets this command to its default setting of disabled.
Usage
Use this command to configure this APN as an emergency APN for VoLTE based E911 support. With this
support, a UE is able to connect to an emergency PDN and make Enhanced 911 (E911) calls while providing
the required location information to the Public Safety Access Point (PSAP).
E911 is a telecommunications-based system that is designed to link people who are experiencing an
emergency with the public resources that can help. This feature supports E911-based calls across the LTE and
IMS networks. In a voice over LTE scenario, the subscriber attaches to a dedicated packet data network
(PDN) called EPDN (Emergency PDN) in order to establish a voice over IP connection to the PSAP. Both
signaling and RTP media flow over a dedicated emergency bearer. Additionally, different than normal PDN
attachment that relies on AAA and PCRF components for call establishment, the EPDN attributes are
configured locally on the P-GW, which eliminates the potential for emergency call failure if either of these
systems is not available.
support, a UE is able to connect to an emergency PDN and make Enhanced 911 (E911) calls while providing
the required location information to the Public Safety Access Point (PSAP).
E911 is a telecommunications-based system that is designed to link people who are experiencing an
emergency with the public resources that can help. This feature supports E911-based calls across the LTE and
IMS networks. In a voice over LTE scenario, the subscriber attaches to a dedicated packet data network
(PDN) called EPDN (Emergency PDN) in order to establish a voice over IP connection to the PSAP. Both
signaling and RTP media flow over a dedicated emergency bearer. Additionally, different than normal PDN
attachment that relies on AAA and PCRF components for call establishment, the EPDN attributes are
configured locally on the P-GW, which eliminates the potential for emergency call failure if either of these
systems is not available.