CUBE sits between your call control and everyone else: carriers, Webex Calling, Microsoft Teams and partners. Engineers who truly understand CUBE are among the most in-demand people in collaboration.
This course is built around real ITSP scenarios. You will design dial peers that scale, normalise SIP with SIP profiles, secure trunks with TLS and SRTP, and troubleshoot from debug ccsip messages and Wireshark captures.
22 h video + 28 h labs, about 6 weeks at 6–8 hours per week.
6 modules · 35 lessons
Hands-on in a browser-based pod. Each lab starts from a clean snapshot.
| # | Lab | Skills | Time |
|---|---|---|---|
| 1 | SIP trunk to an ITSP with registration and digest auth | sip-ua, credentials | 90 min |
| 2 | Scalable dial-peer design with E.164 pattern maps | Dial peers | 90 min |
| 3 | Fix a broken ITSP with SIP profiles | SIP normalisation | 75 min |
| 4 | Secure the trunk with TLS and SRTP | PKI, SRTP | 75 min |
| 5 | Transcoding and DTMF interworking | DSP farm, DTMF | 60 min |
| 6 | Box-to-box high availability | Redundancy groups | 90 min |
| 7 | Troubleshooting gauntlet: eight failing calls | debug ccsip, captures | 2 h |
Runs on: Cisco CUBE Labs
| Exam | Blueprint domain | Weight | Covered in |
|---|---|---|---|
| 350-801 CLCOR v2.0 | Voice Gateways and Session Border Controllers | 10% | Modules 1–3 |
| 300-815 CLACC v2.0 | Cisco Unified Border Element | — | Modules 2–5 |
| CCIE Collaboration v3.1 | Call Control and Dial Plan / Edge Services | — | Modules 2–6 |
Principal Instructor, CUBE & SIP Interworking
Priya spent a decade at a Tier-1 carrier integrating enterprise SBCs with SIP trunk services. She teaches dial-peer design, SIP normalisation and troubleshooting from real carrier traces.
Watch before you buy, no sign-up required.
“The best CUBE training I have seen. The troubleshooting gauntlet is brutal and brilliant.”
“SIP profiles finally make sense. I fixed a long-standing carrier interop issue the week after the course.”
“Real carrier scenarios rather than toy examples. Highly recommended.”
Connect Microsoft Teams Phone to the PSTN and to CUCM using Cisco CUBE as a certified Direct Routing SBC. This is the course where the two platforms meet.
Supports MS-721
Understand exactly how a voice call works on an IP network, from SIP signalling and SDP negotiation to RTP media, codecs and QoS.
Foundation for 350-801 CLCOR
The on-premises CCNP Collaboration concentration: advanced CUCM dial plans, CUBE, mobility, call admission control and enterprise-scale call routing.
300-815 CLACC v2.0