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2 specifications found, displaying 1 to 2
Specification NumberTypeTitleStatusPrimary Responsible Group 
26.102TSMandatory speech codec; Adaptive Multi-Rate (AMR) speech codec; Interface to Iu, Uu and NbUnder change control S4
See details Internal Common IMS 2G 3G LTE 5G
26.912TRCodec for Circuit switched Multimedia Telephony Service; Quantitative performance evaluation of H.324 Annex C over 3GUnder change control S4
See details Internal Common IMS 2G 3G LTE 5G