Source note · PRI and TDM gateway interworking
For SIP-bridging (PSTN to SIP to PSTN transit), RFC 3398 requires the SIP messages to carry the ISUP message as a MIME body so it can be reproduced at the far gateway.
Checked 2026-09-24
- Vendor
- IETF
- Product
- RFC 3398
- Subsystem
- SIP bridging
- Deployment
- carrier
- Region
- not restricted
- Release range
- RFC 3398
- 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 5.1
Cite this note
APA
WarmTransfer. (2026, September 24). PRI and TDM gateway interworking: source note legacy-pri-tdm-sip-bridging-encapsulation. WarmTransfer. https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-sip-bridging-encapsulation
BibTeX
@misc{warmtransfer-claim-legacy-pri-tdm-sip-bridging-encapsulation,
title = {PRI and TDM gateway interworking: source note legacy-pri-tdm-sip-bridging-encapsulation},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-sip-bridging-encapsulation},
note = {Source note legacy-pri-tdm-sip-bridging-encapsulation, checked 2026-09-24}
}