The Erlang B formula holds for any holding-time distribution with a finite mean, even though it is usually derived assuming exponential holding times; Poisson arrivals are still assumed.
field report · Checked 2026-09-25
- Vendor
- vendor-neutral
- Product
- not restricted
- Subsystem
- trunk and port sizing
- Deployment
- any
- Region
- not restricted
- Release range
- revision current at 2026-09-25
- Status
- field report
- Checked
- 2026-09-25
Sources
- Erlang (unit) — Wikipedia · tier 5 independent technical research · Erlang B formula section
Cite this note
APA
WarmTransfer. (2026, September 25). Erlang B and Erlang C for voice and contact center sizing: source note erlang-traffic-engineering-erlang-b-insensitivity. WarmTransfer. https://warmtransfer.net/knowledge/claims/erlang-traffic-engineering-erlang-b-insensitivity
BibTeX
@misc{warmtransfer-claim-erlang-traffic-engineering-erlang-b-insensitivity,
title = {Erlang B and Erlang C for voice and contact center sizing: source note erlang-traffic-engineering-erlang-b-insensitivity},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/erlang-traffic-engineering-erlang-b-insensitivity},
note = {Source note erlang-traffic-engineering-erlang-b-insensitivity, checked 2026-09-25}
}