Question: What is a key consideration in the development of 3GPP numbering schemes, particularly in relation to international standards?
Option 1: Ensuring backward compatibility with existing 2G networks
Option 2: Minimizing the number of digits required for user identification
Option 3: Prioritizing national regulatory requirements over global standards
Option 4: Aligning with IMT-2000 to facilitate global user numbering as per ITU-SG2 guidelines
Explanation: This is correct because the question requires an understanding of the telecom domain's emphasis on global interoperability and standardization. The 3GPP's alignment with IMT-2000, as guided by ITU-SG2, underscores the importance of universal numbering schemes for seamless international communication.