cs-to-ps-SRVCC-Allowed-Indicator  IE 

This parameter indicates by its presence to the MSC Server enhanced for ICS that CS to PS SRVCC is subscribed. This parameter is used by the VLR.
Reference: TS 29.002-f30   View

Type:

  Null

Value Length:

  1 .. 4


Containing Messages
InsertSubscriberDataArg-D
InsertSubscriberDataArg-Gr