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ITU-T D.201 General principles regarding call-back practices
ITU-T Q.2220 Transport-Independent Signalling Connection Control Part (TI-SCCP)
ITU-T Q.115.1 Logic for the control of echo control devices and functions
ITU-T D.140 AMD 1 New Appendix to Annex C: Guidelines
ITU-T D.602R Application of the 'sender pays transit' principle in transit relation
ITU-T Q.1742.1 IMT-2000 references to ANSI-41 evolved core network with cdma2000 access network
ITU-T Q.1902.1 AMD 1 Support for the International Emergency Preference Scheme
ITU-T Q.1902.2 AMD 1 Support for the International Emergency Preference Scheme
ITU-T Q.1902.4 AMD 1 Support for the International Emergency Preference Scheme
ITU-T Q.1922.4 Interaction between the Intelligent Network application CS-4 protocol and the Bearer Independent Call Control protocol
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