Predictive dialer vs power dialer: which one?
The Ofcom 3% abandonment rule, ratio dialling, AMD and voicemail-drop. When predictive becomes a regulatory headache.
Both auto-dial. The difference is how many calls they ring per available agent. Predictive misuses get you in trouble with Ofcom; power dialing rarely does.
The four flavours
| Mode | Calls per ready agent | Used for |
|---|---|---|
| Preview | 1 (agent inspects before dial) | Complex B2B, high-value |
| Progressive / Power | 1-3 | Standard SMB outbound, follow-ups |
| Predictive | 3-8 (dials ahead of capacity) | High-volume collections, surveys |
| Blast / Robocall | n/a, no agents | Don't. Often illegal under UK PECR. |
The Ofcom 3% rule
Under Ofcom's Persistent Misuse policy, UK predictive dialing must keep the rate of abandoned calls (rings answered before an agent is free) below 3% of live answered calls in any 24-hour period.
Does Silux Call offer a dialer?
No. Silux Call does not offer an outbound preview, power or predictive dialer. This guide explains the modes and the Ofcom rule for anyone choosing one.
Recommended starting point
If you are running outbound sales for the first time, start with a power (progressive) dialer at a low ratio: it is faster than manual dialling, abandons nothing, and gives your team a feel for outbound rhythm before you consider predictive.
What you cannot do, in any mode
- Robocall residential numbers without prior consent (PECR).
- Suppress caller-ID for the purpose of evasion (UK CLI rules).
- Dial 999 from a dialer campaign — operator-side block.
- Use predictive into the Northern Ireland early-morning slot before 09:00 — Ofcom guidance.
Other guides
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- How to port your UK phone number to VoIP (PAC and STAC explained)guide
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- Silux Call vs Yay.comalternative
- Silux Call for Estate agentsindustry
- Silux Call for Legal practicesindustry
- PSTN switch-off countdown 2027: what every UK SMB must do in the next 12 monthsblog
- Pre-ring scam shield: why your UK business phone should flag scam calls before it ringsblog
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