Cisco's UCCX 15.0 design guide allows a busy interval of one hour or less, such as 30 or 15 minutes, when sizing is wanted for those shorter intervals.

Checked 2026-09-25

Vendor
Cisco
Product
Unified Contact Center Express
Subsystem
traffic engineering terminology
Deployment
on-premises
Region
not restricted
Release range
15.0
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Erlang B and Erlang C for voice and contact center sizing: source note erlang-traffic-engineering-busy-interval-sub-hour. WarmTransfer. https://warmtransfer.net/knowledge/claims/erlang-traffic-engineering-busy-interval-sub-hour

BibTeX

@misc{warmtransfer-claim-erlang-traffic-engineering-busy-interval-sub-hour,
  title  = {Erlang B and Erlang C for voice and contact center sizing: source note erlang-traffic-engineering-busy-interval-sub-hour},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/erlang-traffic-engineering-busy-interval-sub-hour},
  note   = {Source note erlang-traffic-engineering-busy-interval-sub-hour, checked 2026-09-25}
}

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