acn-version-retention
This command configures the ACN version retention method.
Product
SGSN
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > MAP Service Configuration > HLR Configuration
configure > context context_name > map-service service_name > hlr
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-map-service-service_name-hlr)#
Syntax
acn-version-retention { per-imsi-prefix | per-subscriber }
default acn-version-retention
default
Returns the configuration to the default value: retains the version information per IMSI prefix.
per-imsi-prefix
Retain ACN version information, for communication with the HLR, on a per IMSI prefix basis.
per-subscriber
Retain ACN version information, for communication with the HLR, on a per buscriber basis.
Usage Guidelines
By default, the SGSN sends ACN version 3 SAI (service area identity) to the HLR. If the SGSN receives an error message indicating that the HLR does not support that version, then the SGSN tries again with an ACN version 2 SAI. Next time the SGSN communicates with that HLR, it retains that version information and version persists based on the IMSI prefix.
Use this command to enable the SGSN to retain version according to subscriber.
Example
default acn-version-retention