![](https://csdnimg.cn/release/download_crawler_static/88637527/bg8.jpg)
8
Profile1-Mechanismsforerrordetection
ConceptsforE2E
u SequenceNumber("Counter"):
u 4bits(partoftransmitteddata)from0to14
u Incrementedby1oneverytransmissionrequest
u Protectionagainst:
u unintendedmessagerepetition
u messageloss
u insertionofmessages
u re-sequencing