How does the lead response capacity work?
Borrowed from Telecom queueing: Erlang C and Little's Law (L = λW)
Call centers use Erlang C to staff phone lines so callers wait briefly. Inbound leads behave like calls: they arrive at random, occupy a rep for a while and wait if everyone is busy.
Little's Law adds a check: the average number of leads in the system equals the arrival rate times the time each one spends there.
Worked example
A US B2B team gets 60 leads an hour and each takes 5 minutes to handle, so the load is 5 erlangs. To answer 80% of leads within 5 minutes the team needs 7 reps, which gives a 96% service level.
How should I read my result?
Queues grow without limit. Add staff or automate first replies.
Waits are short on average but spike at busy times. Check the service level.
Responses are fast. Check that idle time is acceptable.
Embed this calculator
Questions about lead response capacity
Why does response time matter?
Buyers often talk to whoever replies first, so faster replies raise the chance of a meeting.
Can automation help?
Yes. Instant automated acknowledgments reduce perceived wait, though a human reply still closes.
Do leads arrive evenly?
No. Use peak-hour volume, not the daily average.