Source note · SS7 and carrier interworking concepts
RFC 3398 places overlap dialling (ISUP Subsequent Address Messages) outside its scope and assumes gateways collect all digits with timers before sending an INVITE.
Checked 2026-09-24
- Vendor
- IETF
- Product
- SIP-ISUP gateways
- Subsystem
- digit collection
- Deployment
- carrier, on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- RFC 3398: Integrated Services Digital Network (ISDN) User Part (ISUP) to Session Initiation Protocol (SIP) Mapping — IETF / RFC Editor · tier 1 standards and regulators · Section 4 (scope)
Cite this note
APA
WarmTransfer. (2026, September 24). SS7 and carrier interworking concepts: source note ss7-carrier-interworking-rfc3398-overlap-out-of-scope. WarmTransfer. https://warmtransfer.net/knowledge/claims/ss7-carrier-interworking-rfc3398-overlap-out-of-scope
BibTeX
@misc{warmtransfer-claim-ss7-carrier-interworking-rfc3398-overlap-out-of-scope,
title = {SS7 and carrier interworking concepts: source note ss7-carrier-interworking-rfc3398-overlap-out-of-scope},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/ss7-carrier-interworking-rfc3398-overlap-out-of-scope},
note = {Source note ss7-carrier-interworking-rfc3398-overlap-out-of-scope, checked 2026-09-24}
}