Source note · PRI and TDM gateway interworking
A release cause that crosses two RFC 3398 gateways is not guaranteed to survive intact; for example cause 34 becomes SIP 503 on the first gateway and SIP 503 becomes cause 41 on the second.
inferred · Checked 2026-09-24
- Vendor
- IETF
- Product
- RFC 3398
- Subsystem
- cause mapping
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3398
- Status
- inferred
- 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 · Sections 7.2.4.1 and 8.2.6.1 read together
Cite this note
APA
WarmTransfer. (2026, September 24). PRI and TDM gateway interworking: source note legacy-pri-tdm-cause-roundtrip-lossy. WarmTransfer. https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-cause-roundtrip-lossy
BibTeX
@misc{warmtransfer-claim-legacy-pri-tdm-cause-roundtrip-lossy,
title = {PRI and TDM gateway interworking: source note legacy-pri-tdm-cause-roundtrip-lossy},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-cause-roundtrip-lossy},
note = {Source note legacy-pri-tdm-cause-roundtrip-lossy, checked 2026-09-24}
}