ITU-T E.157 - : References

This document references the following standards:
ITU-T Q.1912.5
ETSI ETS 300 649
ITU-T E.101
ITU-T I.251.4 (REV 1)
ITU-T Q.731.7
ITU-T I.251. 7 (REV 1)
ETSI ETS 300 648
ITU-T I.251.3 (REV 1)
ITU-T E.212
ETSI TS 100 514
ETSI TS 122 081
ITU-T E.164
ITU-T Q.764
This document is referenced by the following standards:
ITU-T E.156
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