Key Takeaways
- Scenario 1120 is an orchestra call-time failover: 16:40 Hall B blast, spare already hot. Not science-fair gyms, IEP rooms, or SAT buses.
- A primary that dies at 16:38 with a cold spare is a pit full of empty chairs and a late downbeat.
- Do not SMS student names or seat charts. Hall nickname + ticket only.
- PTA promo stays on another device so ops traffic is not starved.
- 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 1120 is a band desk. Call time moves to Hall B at 16:40. The spare is already signed in. Science-fair gyms are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Multi-device failover · Developer Center. GSMA.
Call time, not science fair
One blast, two devices. Map the send to the concert ticket, not a judging gym.
If the spare was still in the choir loft, the pit sat empty and the downbeat slipped.
Ops vs PTA blast
| Lane | Body | Failover | Device |
|---|---|---|---|
| Call time | Hall B + ticket | Spare hot | Ops pair |
| PTA | Promo | — | Marketing pool |
| Names / charts | Do not SMS | — | — |
Caps: 2 / 5 / 15.
Never SMS student names
SIS only. Failover. REST: PHP, C#. MCP wraps REST.
Hall code only
Hall B and ticket. No legal names, no stand numbers.
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.
Spare already hot
Signed in, charged, same SIM class. Doze · Setup.
Ticket ids
Log ticket + send id, not names in chat. Rotate keys. Not a CodeCanyon school pack.
Failover or hold pit
If both radios fail, hold the pit door. Do not post a roster on a parent group chat.
Checklist
- Spare signed in overnight.
- No names in templates.
- PTA on another device.
- Health check before 16:20.
- Both modems charging.
Next steps
Kill the primary on a staff blast; prove the spare takes 16:40 and never leaks a name. Downloads · Docs.
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
