Kall8 Phone and Microsoft Teams
What "unlimited" really means
We sell unlimited calling on cloud users and metered minutes on numbers, and we print the numbers behind both. Here is exactly what you get, where the line is, and what happens if you cross it.
At Kall8, unlimited means unlimited calling in the US48 for one person using the Kall8 app or Teams on their local number, within published thresholds: 2,500 minutes a month per user, no more than 25 % of minutes to fewer than 5 numbers, and an account average under 1,500 minutes per user. Toll-free numbers and forwarded calls are metered.
1. Scope: what unlimited covers
Unlimited applies to calls placed or received through the Kall8 app or Teams client on the local number assigned to that user, to and from the US48. Toll-free numbers, international destinations, calls forwarded to an outside phone and standalone Kall8 numbers are metered.
In practice: a Kall8 Phone user at $19.95 a month can talk all day on their local number in the app. If that same user adds a toll-free number, calls on it are metered per minute above any plan allowance. If a Numbers plan forwards calls to a cell phone, those minutes come out of the plan's allowance and are then billed per minute (usage pricing).
2. Concurrency
Each user can hold a stated maximum number of simultaneous calls: 3 simultaneous calls per user. A hunt group or auto-attendant spreads calls across users; a single user is not a call center.
3. Normal business use, defined by numbers
A user is outside normal use when any one of those is exceeded. Prohibited outright, regardless of volume:
- Auto-dialers and predictive dialing
- Call-center or telemarketing use
- Trunking or resale
- Fax or voice broadcast
- Continuous call forwarding
- Call pumping or traffic that generates termination revenue
- Any use that violates the Acceptable Use Policy
4. Remedies, in order
- Notice
- Conversion of the affected users to metered billing at the published per-minute rate from the first day of the month in question
- Suspension for repeated or clearly abusive use
- Termination without refund for prohibited use
Kall8 may apply the remedies without prior notice where fraud or toll fraud is suspected.
5. Monitoring
The same usage-anomaly alerts that protect new accounts from fraud run on every Phone user: minutes per day, distinct destinations and simultaneous calls. Enforcement is systematic, not discretionary, and the thresholds above are the ones the alerts use.
6. How other providers define unlimited
Quoted from each vendor's public pages, captured 13 September 2026. Verify against the current terms before relying on them.
| Provider | What is published | Source |
|---|---|---|
| Kall8 | 2,500 minutes per user per month, 25 % concentration rule, 1,500 account average, concurrency 3 simultaneous calls per user, remedies in order | This page and the terms |
| 800.com | 1,000 minutes included on the entry plan; one concurrent call per extension in the terms | 800.com |
| Grasshopper (GoTo) | 50,000 minutes and 50 concurrent calls per GoTo terms (verify) | grasshopper.com |
| Talkroute | Unlimited with a fair-use policy; no numeric threshold published | talkroute.com |
| Ooma Office | Unlimited US/Canada with a fair-use policy; 500 toll-free minutes then metered | ooma.com |
| Quo (OpenPhone) | Unlimited US/Canada calling with a fair-use policy; no numeric threshold published | openphone.com |
The point is not that our thresholds are the highest; it is that we tell you the number.
Fair-use questions
Unlimited, with the limits in writing
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