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Finish in 10 minutes

Read four SIP rooms. You will be able to tell a transaction from a dialog and a 180 from a 200.

1. SIP transactions and dialogs — A transaction pairs a request with its responses.
2. Offer and answer — SDP is the offer or the answer, not a second signaling protocol you ignore.
3. Registration — REGISTER publishes a Contact. It does not place a call.
4. Early media and PRACK — 183 Session Progress can carry SDP before answer.

Full course

Fundamentals, the dial plan, the gateway, the edge, QoS, the contact-center bridge, migration, the troubleshooting habit, then emergency calling, recording, and open-telephony bridges.

1. SIP — Messages, dialogs, and media
2. CUCM dial plan — Partitions, patterns, and trunks
3. CUBE and SRST — Two legs, and the phone when CUCM is gone
4. Expressway — The pair that lets a remote phone register
5. Voice QoS — Marks, queues, and the delay budget
6. UCCE bridges — From the carrier to the agent desktop
7. Webex Calling migration — Move a number and keep a rollback
8. Troubleshooting — One hypothesis, then one change
9. Emergency calling — Direct 911, Emergency Responder, and callback
10. Call recording — Forks, SIPREC, and what a file is not
11. Open telephony bridges — SIP trunks, Asterisk, FreeSWITCH, and WebRTC

Certifications

Collaboration exam titles change. The Cisco training catalog returned HTTP 403 to the checker on 2026-10, so this page does not link it. Confirm the current title on the vendor site before you pay. This lab is study material, not an exam voucher.