Because all four retransmission timers are 0 on a reliable transport, a capture taken over TCP or TLS contains no request retransmission at all, so the absence of retransmissions in such a capture is a property of the transport and is not evidence about the network or the peer.

inference · verified 2026-09-15

Vendor
IETF
Product
SIP
Subsystem
Transaction timers
Deployment
not restricted
Region
not restricted
Release range
RFC 3261
Status
inference
Confidence
0.60
Verified
2026-09-15

Sources

Cite this claim

APA

WarmTransfer. (2026, September 15). SIP retransmission timers and transaction state: claim siprt-no-request-retransmission-on-a-stream-transport. WarmTransfer. https://warmtransfer.net/knowledge/claims/siprt-no-request-retransmission-on-a-stream-transport

BibTeX

@misc{warmtransfer-claim-siprt-no-request-retransmission-on-a-stream-transport,
  title  = {SIP retransmission timers and transaction state: claim siprt-no-request-retransmission-on-a-stream-transport},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/siprt-no-request-retransmission-on-a-stream-transport},
  note   = {Claim siprt-no-request-retransmission-on-a-stream-transport, verified 2026-09-15}
}

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