ITU-T Recommendation E.520 (11/88), in force, covers the number of circuits to provide in automatic and/or semiautomatic operation for circuit groups without overflow facilities.
Checked 2026-09-25
- Vendor
- vendor-neutral
- Product
- not restricted
- Subsystem
- trunk and port sizing
- Deployment
- carrier-network
- Region
- not restricted
- Release range
- E.520 (11/88)
- Checked
- 2026-09-25
Sources
- E.520 : Number of circuits to be provided in automatic and/or semiautomatic operation, without overflow facilities — ITU-T · tier 1 standards and regulators · Recommendation landing page: title and status fields
Cite this note
APA
WarmTransfer. (2026, September 25). Erlang B and Erlang C for voice and contact center sizing: source note erlang-traffic-engineering-itu-e520-no-overflow. WarmTransfer. https://warmtransfer.net/knowledge/claims/erlang-traffic-engineering-itu-e520-no-overflow
BibTeX
@misc{warmtransfer-claim-erlang-traffic-engineering-itu-e520-no-overflow,
title = {Erlang B and Erlang C for voice and contact center sizing: source note erlang-traffic-engineering-itu-e520-no-overflow},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/erlang-traffic-engineering-itu-e520-no-overflow},
note = {Source note erlang-traffic-engineering-itu-e520-no-overflow, checked 2026-09-25}
}