Cisco lists a software MTP that sends dummy RTP, media flow-around, media anti-trombone and locally generated STUN packets as remedies for no-way audio on CUBE hairpin calls, with the software MTP preferred.

Checked 2026-09-24

Vendor
Cisco
Product
Cisco Unified Border Element
Subsystem
media
Deployment
on-premises
Region
not restricted
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Analysing a SIP call in Wireshark: source note sip-call-analysis-wireshark-cube-hairpin-remedies. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-call-analysis-wireshark-cube-hairpin-remedies

BibTeX

@misc{warmtransfer-claim-sip-call-analysis-wireshark-cube-hairpin-remedies,
  title  = {Analysing a SIP call in Wireshark: source note sip-call-analysis-wireshark-cube-hairpin-remedies},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/sip-call-analysis-wireshark-cube-hairpin-remedies},
  note   = {Source note sip-call-analysis-wireshark-cube-hairpin-remedies, checked 2026-09-24}
}

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