Through the UserInputCapability (during the capabilities exchange), an EP can signal which string type(s) it supports for "user input". The UserInputSupportIndication in the UserInputIndication message carries similar information, but it is not clear for what purpose it is included in the UserInputIndication.
Furthermore, the "signal" element in the UserInputIndication can only carry an IA5String type and the extendedAlphanumeric element can only carry strings of type GeneralString, so what is the purpose of informing the other party about supported string types that will never be used anyway?
Regards,
Frank
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