Troubleshoot experience Case: Attach Failure Due to Incorrect GPRS Data Inserted
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l[Symptom] When a subscriber in Italy roamed to China, the GPRS attach failed. According to the single-user tracing, the main cause of the GPRS attach failure was that, after the HLR inserted GPRS data, the SGSN believed that DataMissing occurred in the MAP message and thus the SGSN rejected the attach. MAP message: Insert subscriber GPRS data MAP message: Insert subscriber data response (data missing) [Handling approach] Compared with the correct insert subscriber data, the HLR failed to send the networkAccessMode parameter |
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