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Sister technologies around the session
WFM, recording, emergency policy, analytics, CRM, AI agents, and programmable APIs hang off the session. They are not SIP proxies.
Learn in 5 minutes
- Name the neighbor and the document that mentions it
- Keep CRM and WFM out of the Via path
- Describe programmable APIs only as far as the Twilio docs page goes
Visual
The session is the seam. The neighbor consumes an event or a recording, or it places a call through a product API.
Worked example
Name the neighbor The symptom is a recording that never starts. SIP to the phone works.
- Separate the customer call from the recorder.
- Name the RFC.
- Do not blame WFM first.
Fault
The screen pop fails. RTP is one way. The ticket says to reboot the CRM.
Neighbors consume events. They do not replace c=.
Quiz
Ecosystem
Glossary, sister systems, and the integration seam for this room.
Quality management and recording QM scores interactions. The standardized way an SBC forks a session to a recorder is SIPREC.
Sources and go deeper
- RFC 7866 — last checked 2026-10
- RFC 6881 — last checked 2026-10
- RFC 3261 §21 — last checked 2026-10
- FreeSWITCH users manual — last checked 2026-10
- Twilio docs — last checked 2026-10
- Twilio Elastic SIP Trunking — last checked 2026-10
- RFC 3261 — last checked 2026-10
- RFC 3264 — last checked 2026-10