Question: In a 3GPP SMS context, when integrating a vCard object within an Extended Object Information Element (IE), what is the default character encoding used, and how can alternative encodings be specified for certain properties?
Option 1: Default: 7-bit ASCII; Alternative encodings via LANGUAGE property parameter
Option 2: Default: UTF-8; Alternative encodings via CHARSET property parameter
Option 3: Default: UTF-16; Alternative encodings via CHARSET property parameter
Option 4: Default: 7-bit ASCII; Alternative encodings via CHARSET property parameter
Explanation: According to the specifications, when integrating a vCard object in an Extended Object IE for SMS, the default character encoding used is UTF-8, deviating from the typical 7-bit ASCII. Moreover, for certain vCard properties that require different encodings, this can be achieved by setting the CHARSET property parameter to the appropriate character set, allowing flexibility in encoding based on the property's needs.