PRETS 300 170-1991 Data Link Layer Protocol at the Q Reference Point for the Signalling Channel between Two Private Telecommunication Network Exchanges
ETSI - European Telecommunications Standards Institute
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PRETS 300 170-1991
PRETS 300 170-1991 history
1991PRETS 300 170-1991 Data Link Layer Protocol at the Q Reference Point for the Signalling Channel between Two Private Telecommunication Network Exchanges