Cisco Unified Communications Manager (CallManager)
Reviews
Star rating
Rank in UCaaS Platforms
Pros and cons
Pros
- Video Conferencing
- Reliability
- Communication
- Customer Service
- Messaging Features
- Chat Feature
Cons
- Complex Processes
- Missing Functionality
- High Cost
- Missing Features
- Upgrade Issues
- Billing Issues
Traffic & LLM citations
Source: G2 review data
Winning from
Losing to
Key stats
Adoption by company size
| Segment | Share of reviews |
|---|---|
| Small Business | 6.3% |
| Mid-Market | 48.6% |
| Enterprise | 45.0% |
Quarterly history
| Quarter | Reviews | Star rating |
|---|---|---|
| 2025 Q3 | 1 | 3.0 |
| 2026 Q2 | 1 | 4.0 |
Satisfaction ratings
What reviewers say
Product is OK but the service and support is a dumpster fire
“It checks the boxes for minimum required features for a phone system.”
The Ferrari of Phone Systems
“As someone who has supported CUCM for several years, I can safely say that it is a workhorse. It's stability can be rivaled by only a few other pbx platforms, in my opinion. While there is a slight learning curve and of course requires the proper Cisco training and subject matter”
Cisco Unified Communications Manager
“CUCM is a very realistic browser based and app based Intelligent Call Manger application it has solved many problems realted to our customer service job which is 24/7 . Browser based application is very light and fast it doesnot stuck with call it keeps refreshes it self every ti”