Key Takeaways
- Scenario 1980 is a climbing-gym belay-bay OTP. The harness locker stays locked until digits land — not a nail station, chiro table, or driving-school bay.
- A 18:10 intro class that starts without the OTP still occupying the auto-belay is a collision, not a “sent” metric.
- Do not SMS waiver language or medical notes. Bay letter, start window, and four digits.
- Membership-app 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 1980 is a climbing-gym desk. Climbers get four digits and “bay C, 18:10.” The auto-belay locker stays shut until those digits hit. Nail bars and notary rooms are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. OTP priority · Developer Center. GSMA.
Belay bay, not a salon
Hold the locker OTP on a dedicated radio. 18:05 is a priority drain, not a campaign slot.
If 12 intros were “queued” and the promo ate the modem, you had twelve locked bays and a class in street shoes.
Harness OTP vs membership
| Lane | Body | Queue | Device |
|---|---|---|---|
| Bay unlock | Digits, bay | Head of line | Front-desk modem |
| App login OTP | Digits | Never share | Dedicated |
| Waiver / injury | Do not SMS | — | — |
Caps: 2 / 5 / 15.
Queue starves digits
Promo after 18:20. Transactional SMS. REST: PHP, C#. MCP wraps REST.
No waiver text
Bay letter and window only. Confirm identity at the desk if they reply STOP.
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.
18:10 desk
Doze exempt at class start. Doze · Setup.
Bay ids
Log bay + OTP id, not waivers in chat. Rotate keys. Not a CodeCanyon climbing pack.
Hold or walk
If you will not isolate OTP from Friday promos, do not lock the belay on SMS.
Checklist
- OTP pool separate from promo.
- No waiver in templates.
- Membership OTP on another device.
- Webhook signatures.
- Front-desk modem charged at 17:30.
Next steps
Queue a promo behind a staff bay OTP; prove the digits still land before 18:10. 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
