SIP-202 - Session Border Controllers

Course code	SIP-202
Track	CVP - Certified VoIP Professional (second of two)
Level	Intermediate (upper half)
Prerequisites	SIP-201 strongly recommended. Module 0 readiness check.
Total commitment	~12-14 hours including paired-capture labs
Format	Self-paced LMS, interactive scenes, paired-capture labs
Assessment	7 module quizzes (80% pass) + CVP exam block (proctored)
Primary RFCs	3261 §16, 3325, 3326, 5806, 7044, 4566, 3711, 4568, 5763+5764, 8445, 8489, 8656, 8838, 7118, 4585, 5104, 5853 (informational), 7339

What you'll be able to do

• Read a paired SBC capture and identify the B2BUA decomposition: Via stack reset, Record-Route doubling, Contact rewrite, Call-ID/tag policy.
• Diagnose the 32-second-after-200-OK call drop (Contact rewrite failure).
• Walk the per-header topology-hiding rewrite map.
• Identify media anchoring mode (pass-through, anchored, transcoded) from a PCAP.
• Reason about HA pair models (pinhole vs replay vs A/A) and pick the right one for an availability target.
• Read WebRTC-to-SIP gateway flows at operational depth (ICE candidates, DTLS handshake, simulcast, RTX).
• Design an SBC fraud-mitigation policy spanning registration, call-attempt, and trust-boundary layers.
• Pass the SIP-202 portion of the CVP exam.

Module map

#	Module	Lessons	Lab?	Quiz?
0	Pre-flight primer (free preview)	2	No	Self-check
1	Why SBCs Exist - Four Operational Reasons	5	No	10 Q
2	B2BUA Mechanics	6	Lab 2.1	10 Q
3	Topology Hiding in Depth	6	Lab 3.1	10 Q
4	Transcoding and Media Anchoring	6	Lab 4.1	10 Q
5	High Availability and SBC Pair Models	5	Lab 5.1	10 Q
6	ICE, STUN, TURN at Operational Depth	6	Lab 6.1	10 Q
7	SIP Fraud and Abuse Mitigation	5	Lab 7.1	10 Q
8	Troubleshooting + CVP Exam Prep	3	Practice exam	Practice exam
Totals		44 lessons	6 labs	7 graded + practice