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ITU-T Q.3611 (06/2009)

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Signalling requirements and protocol profiles for NGN customized ringing tone service
Recommendation ITU-T Q.3611 specifies the signalling requirements and protocol profiles for next generation network (NGN) customized ringing tone (CRT).
Citation: https://handle.itu.int/11.1002/1000/9882
Series title: Q series: Switching and signalling, and associated measurements and tests
  Q.3000-Q.3709: Signalling requirements and protocols for the NGN
  Q.3600-Q.3616: Service and session control protocols – supplementary services
Approval date: 2009-06-29
Provisional name:Q.CRT
Approval process:AAP
Status: In force
Maintenance responsibility: ITU-T Study Group 11
Further details: Patent statement(s)
Development history