System variables

For backwards compatibility the following system variables are supported in SS7. Note that these variables are available only to the State table applications, and tag values have precedence over System Variables.

The table below shows the list of system variables and the equivalent tag information.

Note:
  1. For SV187 and SV188, these are the default assignments and can be reassigned via the service.cfg configuration file (seeService configurable options for details).
  2. Blueworx Voice Response truncates to 20 digits numbers that are stored in these system variables (if a tag supports more than 20 digits).
System variable Associated tags
SV185 : Called Number CLDN
SV186 : Calling Number CLGP
SV187 : User 1 ORIGIN
SV188 : User 2 REDIRN
Parent topic: Information elements passed to Blueworx Voice Response