Key Takeaways
- Scenario 1680 is a dental-hygiene slot OTP priority queue: the chair stays locked until digits land — not a compounding bag, optical tray, or notary seal.
- A patient who sits after “we sent” without OTP is a wasted hygienist hour.
- Do not SMS the chart number or the treatment. Four digits, bay, and how to cancel.
- Staff portal OTP stays on another device.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 1 device / 300 SMS lifetime / 300 contacts. Developer: 25,000 SMS per year.
Android SMS gateway scenario 1680 is a hygiene desk. Patients get four digits and “bay 2, 09:00.” The priority queue is the chair clock, not a fridge bag or frame tray.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. OTP queue · Developer Center. GSMA.
Hygiene chair, not a bag
Hold T-20m OTP. Map DLR to the chair id. 08:50 is a pending list, not a utilization pie.
If 8 were “sent” and 1 never arrived, you burned a hygienist on an empty bay.
Slot OTP vs marketing
| Lane | Body | Queue use | Device |
|---|---|---|---|
| Slot OTP | 4 digits, bay | 08:50 hold | Clinic modem |
| Staff portal OTP | Digits | Auth | Dedicated |
| Chart / plan | Do not SMS | — | — |
Caps: 2 / 5 / 15.
Digits before the chair
One retry, then call. Deliverability. REST: PHP, C#. MCP wraps REST.
No chart numbers
Digits and bay only. Confirm identity on inbound LATE.
Devices and airtime
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 300 lifetime. Developer: 25,000 SMS per year. Pricing.
08:40 queue
Chair ids
Log chair + OTP hash, not the chart in chat. Rotate keys. Not a CodeCanyon dental pack.
Hold or call
If you will not act on pending OTP, do not promise SMS hygiene slots.
Checklist
- 08:50 pending owner.
- No chart in templates.
- Staff OTP on another device.
- Webhook signatures.
- Morning modem charging.
Next steps
Seed a bad number on a staff chair; prove the tray stays covered at 08:50. Downloads · Docs.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- OTP and 2FA SMS on AndroidAuthentication flows
- multi-device and dual SIM routingCapacity and failover
- SMS delivery reports (DLR)Delivery status tracking
- SMS API documentationLive endpoint reference
