- Core Exam vs. CCIE Lab: What the Domains Actually Cover
- The Six CLCOR Domains, Weight by Weight
- Domain 1: Infrastructure and Design (15%)
- Domain 2: Protocols and Endpoints (10%)
- Domain 3: On-Premises Call Control (30%)
- Domain 4: Voice Gateways and Session Border Controllers (10%)
- Domain 5: Cloud and Hybrid Services (25%)
- Domain 6: Media and QoS (10%)
- Registration, Format, and Fee Mechanics
- Sequencing Your Prep Around the Heavy Domains
- Who Actually Hires for This Skill Set
- Frequently Asked Questions
- On-Premises Call Control (30%) and Cloud and Hybrid Services (25%) together make up 55% of the CLCOR blueprint.
- The six domains belong to 350-801 CLCOR v2.0, the qualifying core exam - not the separate CCIE Collaboration lab blueprint.
- CLCOR is 120 minutes, proctored, delivered via Pearson VUE or OnVUE, and costs USD 400 before tax.
- Passing CLCOR earns Cisco Certified Specialist - Collaboration Core and satisfies the core requirement for CCIE Collaboration - it does not award CCIE by...
Core Exam vs. CCIE Lab: What the Domains Actually Cover
Every candidate researching CCIE Collaboration Exam Domains 2026 runs into the same point of confusion first: which exam are the domains actually for? The six content areas covered in this guide belong to 350-801 CLCOR v2.0, Implementing and Operating Cisco Collaboration Core Technologies - the qualifying core exam. They are the blueprint you study for on your way to the certification, not the CCIE Collaboration practical lab blueprint itself, which is a separate, in-person exam evaluated on its own criteria.
That distinction matters because passing CLCOR does not hand you the CCIE number. It earns the Cisco Certified Specialist - Collaboration Core credential and satisfies the core requirement for both CCNP Collaboration and CCIE Collaboration. To finish the CCIE track, you still need the separate CCIE Collaboration v3.1 practical exam - an 8-hour, USD 1,600 lab that must be completed within 3 years of passing the core. If you want the full mechanics of how these two exams fit together, the CCIE Collaboration Requirements guide walks through the entire qualification path step by step.
The Six CLCOR Domains, Weight by Weight
CLCOR v2.0 (blueprint copyright 2025) organizes its content into six domains with fixed exam weightings. Two of them - On-Premises Call Control and Cloud and Hybrid Services - account for more than half the exam by themselves, which should shape how you allocate study time.
| Domain | Weight | Focus Area |
|---|---|---|
| 1. Infrastructure and Design | 15% | Network readiness, dial plan design, redundancy |
| 2. Protocols and Endpoints | 10% | SIP, endpoint registration, device behavior |
| 3. On-Premises Call Control | 30% | Unified CM configuration, features, troubleshooting |
| 4. Voice Gateways and Session Border Controllers | 10% | PSTN connectivity, dial peers, SBC functions |
| 5. Cloud and Hybrid Services | 25% | Webex, hybrid services, cloud-connected calling |
| 6. Media and QoS | 10% | Codecs, media resources, quality of service |
If you want a compact, printable version of this breakdown to keep on hand during final review, the CCIE Collaboration Cheat Sheet condenses each domain into one-page reference points.
Domain 1: Infrastructure and Design (15%)
Infrastructure and Design
This domain tests whether you understand the network foundation that collaboration services run on top of, and whether you can design a dial plan and system architecture that scales.
- Redundancy and resiliency planning for call processing components
- Dial plan design principles, including numbering and routing logic
- Licensing models and their impact on deployment design
- Certificate management fundamentals across collaboration servers
Domain 2: Protocols and Endpoints (10%)
Protocols and Endpoints
Expect questions on how endpoints register, negotiate capabilities, and communicate with call control using SIP-based signaling.
- SIP call flow components and message exchange
- Endpoint registration behavior and troubleshooting
- Firmware and device configuration file handling
- Endpoint feature support differences across device types
Domain 3: On-Premises Call Control (30%)
On-Premises Call Control
At 30%, this is the single largest domain on the exam and the area most candidates underestimate. It centers on Cisco Unified Communications Manager configuration, calling features, and multi-cluster behavior.
- Call routing, hunt groups, and translation patterns
- Mobility and extension features for on-premises deployments
- Multi-cluster and intercluster call routing configuration
- Troubleshooting call failures and feature misconfigurations
Key Takeaway
Because On-Premises Call Control alone carries nearly a third of the exam weight, candidates should budget more hands-on lab time here than any other domain - treat it as the anchor of your entire study plan.
Domain 4: Voice Gateways and Session Border Controllers (10%)
Voice Gateways and Session Border Controllers
This domain covers how on-premises call control connects to the PSTN and how traffic is secured and normalized at the network edge.
- Dial peer configuration and matching logic
- Codec and signaling interoperability between gateways
- SBC functions for security, normalization, and demarcation
- Troubleshooting call setup issues across gateway trunks
Domain 5: Cloud and Hybrid Services (25%)
Cloud and Hybrid Services
The second-heaviest domain reflects how much of modern Cisco collaboration architecture now spans cloud and hybrid models. Candidates need working knowledge of how on-premises call control integrates with cloud collaboration services.
- Hybrid service activation and directory synchronization concepts
- Cloud-connected calling architecture and call flow paths
- Integration points between on-premises infrastructure and cloud services
- Troubleshooting hybrid connectivity and service registration issues
Domain 6: Media and QoS (10%)
Media and QoS
The final domain tests your understanding of how voice and video media is actually transported and prioritized across the network once call control has set up the session.
- Codec negotiation and media resource allocation
- QoS marking, classification, and queuing for real-time traffic
- Media resource management within call control clusters
- Common media quality troubleshooting scenarios
Registration, Format, and Fee Mechanics
Understanding the domains only matters if you also understand how the exam is actually delivered and priced. CLCOR is a proctored, computer-delivered assessment administered in English, scheduled through Pearson VUE test centers or the OnVUE online delivery option. It runs 120 minutes and costs USD 400 before applicable tax. There are no formal prerequisites to sit the core exam.
If you fail on your first attempt, Cisco's retest policy requires a 5 calendar day wait before rescheduling CLCOR, counted from the day after the failed attempt. That's a very different retake cadence than the lab: the CCIE Collaboration practical exam carries a 30 calendar day wait before you can schedule it again after a failed attempt. Personal notes are prohibited under Cisco's exam confidentiality agreement, so plan your memorization strategy accordingly - nothing written travels in or out of the test session.
On the full-certification math: the core exam fee (USD 400) plus the CCIE Collaboration v3.1 practical lab fee (USD 1,600) bring first-attempt base fees to USD 2,000, excluding tax, training, travel, and any retakes. For a complete line-item breakdown of every cost involved in earning the full certification, see the CCIE Collaboration Certification Cost breakdown. And because the clock starts the moment you pass CLCOR, timing your registration matters - the CCIE Collaboration Exam Dates guide covers scheduling windows and the 3-year completion deadline in detail.
Key Takeaway
You have 3 years from the day you pass CLCOR to complete all remaining CCIE Collaboration requirements, including the practical lab - build your lab-prep timeline around that deadline early.
Sequencing Your Prep Around the Heavy Domains
Rather than studying the six domains in blueprint order, sequence your prep by weight. Spend your earliest and longest study blocks on On-Premises Call Control and Cloud and Hybrid Services, since together they determine 55% of your score. Save Protocols and Endpoints, Voice Gateways and SBCs, and Media and QoS for shorter, focused review passes closer to your exam date - each carries 10%, so diminishing returns set in faster once you've covered the fundamentals.
A simple spaced-repetition approach works well here: revisit On-Premises Call Control configuration scenarios every few days throughout your entire prep window rather than front-loading it once and moving on. Pair that with hands-on lab repetition for Infrastructure and Design's dial plan concepts, since design questions tend to reward pattern recognition over memorized facts. For a week-by-week framework built specifically around these domain weights, the CCIE Collaboration Study Guide lays out a full first-attempt study sequence.
If you're still calibrating how much total effort this represents, it helps to read a realistic account of the workload before committing to a start date - the CCIE Collaboration difficulty guide and the CCIE Collaboration Pass Rate analysis both give context on what candidates are actually up against domain by domain.
Who Actually Hires for This Skill Set
The domain weighting isn't academic - it mirrors what employers actually deploy in production environments. Organizations running large Unified Communications Manager clusters need engineers fluent in On-Premises Call Control troubleshooting. Enterprises migrating toward cloud-connected calling need staff who can manage the integration points covered in Cloud and Hybrid Services. Voice gateway and SBC knowledge stays relevant anywhere PSTN connectivity and call security intersect.
Because CLCOR is the shared core exam behind both CCNP Collaboration and CCIE Collaboration, mastering these six domains has value even before you attempt the practical lab. If you're weighing whether the full CCIE track is worth pursuing versus stopping at the specialist or CCNP level, the CCIE Collaboration ROI analysis and CCIE Collaboration Salary Guide break down how the credential is positioned in the job market. You can also browse CCIE Collaboration Jobs for a sense of the roles that reference this domain knowledge directly in their requirements.
To build hands-on comfort with the question style before exam day, run practice scenarios that mirror CLCOR's format on our CCIE Collaboration practice test platform - repetition across all six domains, not just the ones you find easiest, is what separates a passing score from a near-miss. You can revisit the full practice test library as often as needed while you rotate through domain-specific question sets.
Frequently Asked Questions
No. They belong to 350-801 CLCOR v2.0, the qualifying core exam. CCIE Collaboration also requires a separate, in-person 8-hour practical lab exam with its own blueprint and evaluation criteria.
Start with On-Premises Call Control (30%) and Cloud and Hybrid Services (25%), since together they make up 55% of the exam. The remaining four domains are each weighted at 10-15%.
CLCOR is a proctored, computer-delivered exam administered in English through Pearson VUE test centers or OnVUE online delivery. The exam runs 120 minutes and costs USD 400 before applicable tax.
Passing CLCOR earns Cisco Certified Specialist - Collaboration Core and satisfies the core requirement for CCIE Collaboration, but it does not award the CCIE itself. You must also pass the separate CCIE Collaboration v3.1 practical lab within 3 years of passing the core.
The CLCOR core retest wait is 5 calendar days after a failed attempt. The wait before scheduling the same CCIE Collaboration lab again is 30 calendar days. Both are counted from the day after the failure.