SIP
Headsets, and the call that only fails one way
ITSP trunks, your SBC, gateways, bandwidth, NAT, and the ports that belong only to Studio.
SIP and carriers ยท practice ยท 12 min full read
USB noise-canceling headsets are the recommendation. Analog headsets are not supported. Wireless is not recommended once you are above roughly ten agents. Windows 11 Efficiency Mode can drop live calls. Java admin is not the Mac ARM path; use the web admin there. None of that is a SIP trunk, and all of it still stops a call.
- Specify USB headsets
- Check Efficiency Mode before you blame the trunk
When audio fails, walk the stack this track just built: path type, codec, bandwidth medium, NAT, TLS, then the headset. The topology tool lets you pull the ITSP or the SBC and hear the symptom described. It is a model.
Leave the dialer mode alone until the path is honest.
Walk a silent seat
Use the debug order on a fictional one-way call.
- Path
- NAT
- Headset
You named a layer before you named a vendor ticket.
- Headset? USB noise-canceling.
- Analog? Not supported.
- Wireless at scale? Not recommended.
- Efficiency Mode? Can drop live calls.
- Technical requirements PDF. vendor. last checked 2026-10. Fetched for this lab in October 2026. Re-read before you buy hardware or open a firewall.
- RFC 3261, SIP: Session Initiation Protocol. rfc. last checked 2026-10.
- RFC 3550, RTP. rfc. last checked 2026-10.
- RFC 3551, RTP profile for audio and video. rfc. last checked 2026-10.
- ITU-T G.711. standard. last checked 2026-10.
- RFC 8446, TLS 1.3. rfc. last checked 2026-10.
- RFC 1918, private internet addresses. rfc. last checked 2026-10.
- RFC 4787, NAT behavior for UDP. rfc. last checked 2026-10.
Glossary. User profile: The permission template for a person. Not a campaign profile. Planning your implementation
Sister technologies. Verint. Named on the WEM page as a partnership. Not a synonym for native WEM. Workforce engagement management
Config. Use the debug order on a fictional one-way call.
Troubleshooting. The PDF already argued with that cart. Replace the sets.
Cross-platform bridge. A mapping to another PBX or contact center is a teaching bridge. It is not an import button.
Future hook. The guide's cloud endpoint stays unset. Confirm before relying on a dated catalog or a case-study number.