Question: In a GPRS network, utilizing the Gs interface for communication between the Serving GPRS Support Node (SGSN) and Visitors Location Register (VLR) over an E1 interface, what approach is mandated regarding error correction protocol based on modifications to ITU-T Recommendation Q.703?
Option 1: Enhanced Error Correction Protocol with additional redundancy checks.
Option 2: Adaptive Error Correction Protocol that adjusts based on link quality.
Option 3: Only the basic error correction protocol is required.
Option 4: Error correction is optional and left to vendor implementation.
Explanation: According to the specified modifications to ITU-T Recommendation Q.703 for MTP Level 2 on E1 interfaces in GPRS networks, only the basic error correction protocol is mandated, simplifying the error handling process while maintaining reliability suitable for signaling traffic between SGSN and VLR. This approach ensures interoperability and consistency across different implementations.