Source note · Analysing a SIP call in Wireshark
Cisco documents that some ITSPs ignore the IP address and port in SDP because of their firewall design and send media only back to the source of RTP they first receive from the far end.
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
- Troubleshoot No-way Audio Issue with Hairpin Calls on CUBE — Cisco Systems, Inc. (www.cisco.com) · tier 2 current vendor documentation · Troubleshoot No-way Audio Issue with Hairpin Calls on CUBE > Problem
Cite this note
APA
WarmTransfer. (2026, September 24). Analysing a SIP call in Wireshark: source note sip-call-analysis-wireshark-cube-latching-itsp. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-call-analysis-wireshark-cube-latching-itsp
BibTeX
@misc{warmtransfer-claim-sip-call-analysis-wireshark-cube-latching-itsp,
title = {Analysing a SIP call in Wireshark: source note sip-call-analysis-wireshark-cube-latching-itsp},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-call-analysis-wireshark-cube-latching-itsp},
note = {Source note sip-call-analysis-wireshark-cube-latching-itsp, checked 2026-09-24}
}