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Work item:
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Q.3647-rev
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Subject/title:
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Signalling requirements for emergency services in an Internet protocol multimedia subsystem roaming environment
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Status:
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Under study
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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Rev.
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Equivalent number:
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-
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Timing:
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2028-03 (Medium priority)
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Liaison:
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ITU-T SG2, 3GPP SA6, GSMA
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Supporting members:
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China Telecom, China Unicom, China Mobile, India
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Summary:
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Published Recommendation ITU-T Q.3647 specifies the signalling architecture, interfaces and functional description, signalling requirements and signalling procedures for emergency services in the home routing architecture of IMS roaming over long-term evolution (LTE) and LTE advanced.
However, as IMT-2020 network has been widely implemented, the above research for emergency services in the home routing architecture of IMS roaming over IMT-2020 network and beyond should be considered.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2026-03-17 17:28:03
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Last update:
2026-03-17 17:36:17
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