Rotation Numbers

Overview

Rotation Numbers is one of the ways Hello Alex places outbound calls. Instead of every dial coming from one caller ID, we pick a number from the pool and send it to Bland as `from`. That is our pooling, not Bland Custom Dialing. Send Call, Batch Call, voice Campaigns, and API launches can use that pool as the from-number. The SMS node's From Number stays the inspector field.

How it works

• On Send Call, Batch Call, Campaigns, and API, we assign a pool number ourselves, then send Bland `from`. We never send `dialing_strategy` or a Bland custom pool id.
• Hello Alex picks the number from the pool, then sends Bland `from` with that number. We do not send Bland `dialing_strategy` / custom pooling (`custom_pooling` pool_id). Rotation is the voice call's outbound from only — it does not set the SMS node's From Number.
• Add numbers to the pool, and calls are shared between them instead of dialing from one line every time.
• A new number warms up rather than starting at full volume: it takes a small share of calls at first and climbs to its normal share over a set number of days.
• A rotation setup holds one inbound configuration — the pathway that answers a callback — and applies it to every number in the setup.
• When a number stops connecting, Replace swaps it for one that has not been used yet and carries the setup's configuration across to it.
• Call pacing decides how the pool's calls are shared: a set percentage goes to the numbers already at full volume, and the numbers still warming up share the rest evenly. That split is yours to change.

Important fields

• What we send Bland: The chosen E.164 as `from`. Not `dialing_strategy`, not `custom_pooling` / `custom_pool`. SMS node From Number is a separate inspector field and is not filled by rotation.
• In rotation: The numbers currently dialing. Each shows what answers a callback on it.
• Available to swap in: Numbers you own that are not dialing yet, kept ready to replace one that is struggling.
• Rotation setup: One inbound configuration -- calls or SMS -- shared by every number attached to it.
• Call interval: The shortest gap between calls from the pool. Five seconds by default; a longer gap paces a campaign more gently.
• Daily cap per number: How many calls one number may carry in a day, or unlimited if you would rather not cap it.
• Warm-up: The ramp a new number climbs before it takes a full share of the pool's calls.
• Call pacing: The share of calls the full-volume numbers take, with the warming-up numbers sharing what is left.

Tips

• Good to know: a replaced number is never re-used automatically. Replace always reaches for a number that has not dialed yet, which is the point -- swapping in a line that was already tired would repeat the problem you were solving.
• Open any number to see its own record: how many calls it has carried, how many connected, what it did today, and which setup answers it. That page is where a number that has quietly stopped connecting becomes visible.
• The interval is a floor, not a target. A pool paced at one call every ten seconds will not go faster, however many numbers it holds.
• Good to know: the split is what makes a warm-up gentle. A larger share ramps new numbers faster; a smaller one protects a new line for longer.

How outbound calls get triggered

Rotation Numbers is one of the ways Hello Alex places outbound calls. Instead of every dial coming from one caller ID, we pick a number from the pool and send it to Bland as `from`. That is our pooling, not Bland Custom Dialing. Send Call, Batch Call, voice Campaigns, and API launches can use that pool as the from-number. The SMS node's From Number stays the inspector field.

Add a second number to the pool, give it a few days of warm-up, and compare its connected rate against the rest before leaning on it.

• Hello Alex picks the number from the pool, then sends Bland `from` with that number. We do not send Bland `dialing_strategy` / custom pooling (`custom_pooling` pool_id). Rotation is the voice call's outbound from only — it does not set the SMS node's From Number.
• Add numbers to the pool, and calls are shared between them instead of dialing from one line every time.
• A new number warms up rather than starting at full volume: it takes a small share of calls at first and climbs to its normal share over a set number of days.
• A rotation setup holds one inbound configuration -- the pathway that answers a callback -- and applies it to every number in the setup, so a pool of twenty numbers is configured once rather than twenty times.
• When a number stops connecting, Replace swaps it for one that has not been used yet and carries the setup's configuration across to it.
• What we send Bland: The chosen E.164 as `from`. Not `dialing_strategy`, not `custom_pooling` / `custom_pool`. SMS node From Number is a separate inspector field and is not filled by rotation.
• In rotation: The numbers currently dialing. Each shows what answers a callback on it.
• Available to swap in: Numbers you own that are not dialing yet, kept ready to replace one that is struggling.
• Rotation setup: One inbound configuration -- calls or SMS -- shared by every number attached to it.
• Call interval: The shortest gap between calls from the pool. Five seconds by default; a longer gap paces a campaign more gently.
• Daily cap per number: How many calls one number may carry in a day, or unlimited if you would rather not cap it.
• Warm-up: The ramp a new number climbs before it takes a full share of the pool's calls.
• Good to know: a replaced number is never re-used automatically. Replace always reaches for a number that has not dialed yet, which is the point -- swapping in a line that was already tired would repeat the problem you were solving.
• Open any number to see its own record: how many calls it has carried, how many connected, what it did today, and which setup answers it. That page is where a number that has quietly stopped connecting becomes visible.
• The interval is a floor, not a target. A pool paced at one call every ten seconds will not go faster, however many numbers it holds.
• Outbound campaigns that would burn a single caller ID
• Replacing a number that has started going unanswered
• One callback pathway shared across a whole pool

Next step

Open Phone Numbers, add a second line to the pool, then use that rotation as the from-number on Send Call or Batch Call. Do not place a live call just to read this guide.