Key Takeaways
- Scenario 1850 is a weekly allergy / immunotherapy shot DLR. Undelivered means hold the drawn vial — not an OCT dilation lane, INR chair, or sleep kit.
- A vial that is drawn after “we sent” is wasted extract and a 20-minute observe chair nobody occupies.
- Do not SMS the antigen mix or the dose. Time, bay, and how to cancel.
- Patient-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 1850 is an allergy-clinic desk. Patients get “today 16:00, shot bay 3 — 20-minute wait.” Afternoon DLR decides whether that vial is drawn. OCT lanes and INR chairs are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. DLR · Developer Center. GSMA.
Allergy vial, not OCT
Hold T-4h window SMS. Map DLR to the vial id. 15:40 is an undelivered list, not a utilization pie.
If 18 were “sent” and 2 never delivered, you drew two vials for empty chairs.
Shot SMS vs portal OTP
| Lane | Body | DLR use | Device |
|---|---|---|---|
| Window / cancel | Time, bay | 15:40 hold | Clinic modem |
| Portal OTP | Digits | Auth | Dedicated |
| Antigen / dose | Do not SMS | — | — |
Caps: 2 / 5 / 15.
Undelivered holds the vial
One retry, then call. Deliverability. REST: PHP, C#. MCP wraps REST.
No antigen lists
Logistics 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.
15:40 desk
Vial ids
Log vial + DLR, not the mix in chat. Rotate keys. Not a CodeCanyon allergy pack.
Call or hold
If you will not act on undelivered, do not promise SMS shot windows.
Checklist
- 15:40 undelivered owner.
- No mix in templates.
- OTP on another device.
- Webhook signatures.
- Afternoon modem charging.
Next steps
Seed a bad number on a staff bay; prove the vial stays undrawn at 15:40. Downloads · Docs.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- SMS delivery reports (DLR)Delivery status tracking
- transactional SMS for orders and alertsEvent-driven messages
- SMS webhook integrationInbound and status events
- SMS API documentationLive endpoint reference
