Question: In a Concatenated Short Message (SM) containing a Reply Address Element, where should this element be positioned to ensure proper handling?
Option 1: In any segment of the concatenated message
Option 2: Only in the last segment of the concatenated message
Option 3: Only in the first segment of the concatenated message
Option 4: Not included in concatenated messages at all
Explanation: According to SMS specifications, when a Reply Address Element is part of a Concatenated SM, it must occur in its first segment only. This ensures that the receiving device can correctly identify and utilize the alternate reply address for responses.