Source note · Analysing a SIP call in Wireshark
Cisco documents intermittent one-way audio with some ITSPs whose equipment does not accept SDP carrying both a session-level and a media-level c= line, although the SDP specification permits it.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- SDP
- Deployment
- on-premises
- Region
- not restricted
- Release range
- as published 2013-04-26
- Checked
- 2026-09-24
Sources
- Duplicate c= Lines in SDP Cause Intermittent One-way Audio with Various ITSP(s) — Cisco Systems · tier 2 current vendor documentation · Duplicate c= Lines in SDP Cause Intermittent One-way Audio > Problem
Cite this note
APA
WarmTransfer. (2026, September 24). Analysing a SIP call in Wireshark: source note sip-call-analysis-wireshark-cube-dup-c-lines. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-call-analysis-wireshark-cube-dup-c-lines
BibTeX
@misc{warmtransfer-claim-sip-call-analysis-wireshark-cube-dup-c-lines,
title = {Analysing a SIP call in Wireshark: source note sip-call-analysis-wireshark-cube-dup-c-lines},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-call-analysis-wireshark-cube-dup-c-lines},
note = {Source note sip-call-analysis-wireshark-cube-dup-c-lines, checked 2026-09-24}
}