dialing
Nuisance call
A call where a person answers but no agent is ready, so the system hangs up or plays a recording, which regulators count against your campaign.
A nuisance call is one where a real person picks up but no agent is free to talk to them. The system either hangs up or plays a short recorded message and ends the call. From the person's side it feels like a silent or wasted call, and getting one of these is exactly the experience regulators want to stamp out, which is why they count it against you rather than treating it as a harmless miss.
The term comes mostly from UK and European rules, where the regulator ofcom tracks how often callers create this experience and can act against operations that abandon too many people. In practice a nuisance call is the same event VICIdial logs as an abandoned call, so the two ideas overlap heavily. Both feed the same root cause: a predictive dialing campaign placing more calls than its logged-in agents can actually answer at that moment.
Keeping the count down
Your abandonment rate and drop rate are the numbers that tell you whether nuisance calls are piling up. The usual cure is gentler pacing so the dialer places fewer calls than agents can absorb, plus a compliant safe harbor message played whenever a live person answers and no agent is available. That message matters because it turns a silent drop into a short, identified recording, which is what most rules expect when a connection cannot be staffed in time.
If your reports show nuisance calls climbing, the first move is to slow the dialer and confirm your message plays cleanly on every drop. Our guide to lowering your drop rate covers the pacing changes that bring this back under control. The goal is simple: only place a call when there is a good chance someone can take it, and have a clean fallback for the rare times that bet does not pay off.
Related terms
Abandoned call
An abandoned call is an inbound call where the caller hangs up while waiting in the queue, before any agent answers.
Abandonment rate
The percentage of answered outbound calls that ended without the caller reaching a live agent — closely tied to, and often used alongside, drop rate.
Drop rate
The share of answered outbound calls where no agent was free to talk, leaving the caller hanging — a number regulators cap and watch closely.
Ofcom (UK)
Ofcom is the United Kingdom's communications regulator that polices abandoned calls, silent calls, and caller identification from outbound dialers.
Predictive dialing
A dialing mode where VICIdial places more calls than there are free agents, predicting how many will connect, to keep agents busy.
Safe Harbor message
A recorded notice played when a dialer connects a call but no agent is free, identifying who called and why, to limit liability for the dropped call.