Key Takeaways
- Scenario 616 is 16:10 away-fixture sports-bus failover — not exam, homework, enrollment, snow-day, PTC, results, late-run 15:40, field-trip 06:50, after-school 17:10, or lunch till.
- A spare that IT racks at lunch and unplugs at 15:50 is not fixture HA.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free is 300 SMS lifetime, 1 device. Developer is 25,000 SMS per year.
- Starter is 2 devices; the spare still counts.
- Hold PTA lists until the last departure notice drains.
- Canary both radios at 15:40, not at the noon health check.
Summary
Scenario 616 is away-fixture failover. Departure and delay texts leave Android SIMs you host when the sports bus slips past 16:10. Service pricing is based on device count and total SMS sent through the gateway. You need a working Android phone with a SIM and SMS credit from your mobile operator. Operator message costs are yours—we do not sell carrier SMS balance.
If both phones live in a closet that locked at 15:45, the fixture is not HA. It is parents at an empty bay.
Not a CodeCanyon “school SMS” pack. Device meters apply — Twilio vs Android SMS gateway.
Key takeaways
- Scenario 616 is 16:10 away-fixture sports-bus failover — not exam, homework, enrollment, snow-day, PTC, results, late-run 15:40, field-trip 06:50, after-school 17:10, or lunch till.
- A spare that IT racks at lunch and unplugs at 15:50 is not fixture HA.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free is 300 SMS lifetime, 1 device. Developer is 25,000 SMS per year.
- Starter is 2 devices; the spare still counts.
- Hold PTA lists until the last departure notice drains.
- Canary both radios at 15:40, not at the noon health check.
Related reading
multi-device and dual SIM routing, OTP and 2FA SMS, how an Android SMS gateway works, GOV.UK educational visits.
Context
A cancelled fixture must kill departure SMS. PTA wants the same hour. One radio and a sleeping OEM policy will lose Saturday.
Free (300 SMS lifetime) is a rehearsal house. Developer is 25,000 SMS per year.
Core scenario guidance
Keep primary + spare paired through departure. Health is last submit after 15:40, not a noon screenshot.
Hold PTA until the last coach leaves. Locale per family if you span regions.
Away-fixture roles
| Role | When | Typical fail |
|---|---|---|
| Departure / delay | 15:50–17:00 parent local | Phone in a locked office after 15:45 |
| Hot spare | Primary unpaired or submit errors | Unplugged when office closed |
| Parent portal OTP | Transactional, own pool | Dumped onto the bus SIM |
| PTA / merch | Held until last coach leaves | Released at 16:00 into notices |
Cost and ownership
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. The spare is a billed device. Resends burn airtime.
Name a 15:15–18:00 on-call for fixture departures, not only exam week.
Operations
15:40 canary both radios. Abort: hold PTA, keep departure notices. Do not “resend all squads.”
Security and compliance
Minors: short bodies. No full squad lists in SMS. Authenticate fixtures-app cancel hooks. PTA is promotional.
Decision guide
Ship when 15:40 canary is green and the spare is reachable after office lock. Delay if phones close at 15:45. If handsets are forbidden, CPaaS for parent OTP.
Checklist
- Primary + spare paired through departure.
- 15:40 canary.
- PTA held.
- Cancel kills departure SMS.
- Portal OTP isolated.
- Airtime before 15:15.
- Battery exemptions both OEMs.
- Locale per family.
- Fixture on-call named.
- Device cap includes spare.
Next steps
Review device and SMS volume pricing, device setup, SMS API documentation.
Deep dive: production hardening
Cleaners pulling USB at 15:30 is an outage. Watch DLR, not SIS 200s.
Deep dive: scaling and failure modes
Multi-campus Saturdays add devices before inventing a hidden unlimited-handset SKU. Raise OEM ceilings; fair-use remains.
Deep dive: integration discipline
Idempotency on fixture_id + coach_id + local_date. MCP is a REST wrapper — live fields in Developer Center.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit.
15:40 fixture canary
Unplug primary. Confirm spare takes a staff departure notice. Hold PTA during the spike.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- multi-device and dual SIM routingCapacity and failover
- OTP and 2FA SMS on AndroidAuthentication flows
- SMS delivery reports (DLR)Delivery status tracking
- SMS API documentationLive endpoint reference
