Nomadic emergency services configuration parameter

Last Updated : Apr 17, 2026 |
Prolog information
Configure the following parameters to enable the Nomadic Emergency Services feature:
Parameter name
Default value
Description
HELD_URL
Null
Specifies the Location Information Server (LIS) URL that the phone sends a HELD request to determine the physical location information in the PIDF-Lo format.
The URL can be HTTP or HTTPS.
The URL must be a string data type between 0 and 255 ASCII characters without intervening spaces.
HELD_URL can be configured through:
  • The web interface
  • 46xxsettings.txt file
  • DHCP SSON 242
  • AADS
HELD_RETRY
300
Specifies the interval, in seconds, that the phone waits before retrying a HELD request after encountering specific errors.
Valid values are 60 to 3600 seconds.
HELD_RETRY can be configured through:
  • The web interface
  • 46xxsettings.txt file
  • DHCP SSON 242
  • AADS
HELD_PERIODIC_TIMER
60
Specifies the frequency, in minutes, at which the phone sends a request to the LIS server to check if its location information has changed.
This parameter is only used when LLDP_ENABLED is enabled, and HELD_URL is defined.
Note:
This field is only supported in the Aura environment.
Valid values are 30 to 1440 minutes.
HELD_PERIODIC_TIMER can be configured through:
  • The web interface
  • 46xxsettings.txt file
  • DHCP SSON 242
  • AADS
HELD_USERNAME
Null
Specifies the username used for authentication on the LIS.
Valid value is a text string.
Example for username SET HELD_USERNAME "admin"
HELD_PASSWORD
Null
Specifies the password used for authentication on the LIS.
Valid value is a string of alphanumeric rules.
Example for username SET HELD_PASSWORD "Avaya@123"