> ## Documentation Index > Fetch the complete documentation index at: https://docs.aisync.link/llms.txt > Use this file to discover all available pages before exploring further. # Caller ID & Number Health > How the number you dial from is chosen, why it decides your answer rate, and how many numbers a floor actually needs. The number you call **from** decides how many people pick up. Everything else — list quality, scripts, pacing — sits downstream of whether the phone gets answered at all. ## 📉 How a number gets burned ```mermaid theme={null} graph LR A[📞 One number dials heavily] --> B[📵 Carriers see the pattern] B --> C[⚠️ Marked as spam likely] C --> D[📉 Fewer people answer] D --> E[🔁 Dial harder to compensate] E --> A style C fill:#a33,color:#fff style E fill:#b4531f,color:#fff ``` This loop is self-feeding. Once a number is flagged, dialing harder from it makes the flag worse, and the answer rate keeps falling. Dialing more lines per rep without adding numbers accelerates this. Pace and number count have to move together. ## 🔢 How many numbers do you need Number count scales with **simultaneous lines**, not with rep count. Five reps on three lines each is fifteen calls in flight, and fifteen calls out of a small pool burns that pool quickly. | Floor size | Lines each | Calls in flight | Numbers to plan for | | ---------- | ---------- | --------------- | ------------------- | | 2 reps | 3 | 6 | 10–15 | | 5 reps | 3 | 15 | 25–40 | | 5 reps | 5 | 25 | 40–60 | These are planning figures, not hard limits. Watch your **Declined** and **Screened** counts on the [Dialer Performance dashboard](/dashboard/dialer-performance) — both rise when numbers are getting flagged. ## 📍 Local presence Local presence dials from a number matching the lead's area code. People answer local numbers far more often than unfamiliar ones. Local presence can only use numbers you actually own. See [Phone numbers](/phone-numbers/phone-numbers). The toggle sits in the dialer's left-hand panel. If most of your list is in area codes you do not own, buy numbers there or turn it off. ## 🩺 Signs your numbers need attention People are seeing the call and rejecting it. Often a spam label on your caller ID rather than anything about your list. More handsets are screening you. Unknown or flagged numbers get screened far more often than recognised ones. The classic burn signature. Same effort, fewer conversations. Probably the list, not the numbers. Check [connect rate by list](/dashboard/dialer-performance). ## ➡️ Where to go next Monitor and protect your numbers. Add capacity before you raise your pace. Pace and number count move together. Watch Declined and Screened for early warning.