Business Phone Systems · reliability comparison
Ooma Office vs Zoom Phone: which is more reliable? (2026)
Ooma Office is more reliable than Zoom Phone, scoring 80.0 vs 51.8 out of 100. Over the last 90 days Ooma Office reported 0 incidents and Zoom Phone reported 13, with effective uptime of 100% and 99.22% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Ooma Office | Zoom Phone |
|---|---|---|
| Reliability score | 80.0 | 51.8 |
| Rank (business phone systems) | — | #13 |
| Uptime (90 days) | 100% | 99.22% |
| Incidents (90 days) | 0 | 13 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | — | 1d 1h |
| Outages we detected | 0 | 0 |
| Transparency score | 0/100 | 100/100 |
Where Ooma Office and Zoom Phone differ
- Ooma Office reported no incidents in the last 90 days, while Zoom Phone reported 13.
90-day uptime
Ooma Office
Zoom Phone
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Ooma Office incidents
No incidents reported by Ooma Office in the last 90 days.
Recent Zoom Phone incidents
- MaintenanceOct 19, 2026 · resolved in 2d 12h
[Scheduled] Zoom Phone Maintenance - AMS3 Data Center: October 19, 2026
- InformationalOct 19, 2026 · resolved in 16m
Service Degradation Affecting ZP SMS Australia Mobile Numbers
Affected: SMS/MMS (Inbound/Outbound)
- MaintenanceOct 18, 2026 · resolved in 2h
[Scheduled] Zoom Phone Update - Japan SIP Zones: October 18, 2026 (No Operational Impact)
- MaintenanceOct 18, 2026 · resolved in 9h
[Scheduled] Zoom Phone Update: October 18, 2026 (No Operational Impact)
- InformationalOct 9, 2026 · resolved in 12m
Service Degradation Affecting Zoom Phone and Zoom Contact Center PCI Integration in North America
Affected: PCI Integration, PCI Integration
- MaintenanceOct 9, 2026 · resolved in 1d 6h
[Scheduled] Zoom Phone India Maintenance (Hyderabad Data Center): October 09, 2026
Other business phone systems to consider
- Grasshopper · #1 · 99.96% uptime
- JustCall · #2 · 99.96% uptime
- CloudTalk · #3 · 99.91% uptime
- GoTo Connect · #4 · 99.87% uptime