Source note · Unified CM virtualization and sizing
In Collaboration System Release 14 sizing, each Unified CM cluster supports configuration and registration of at most 50,000 secured or unsecured SCCP or SIP phones.
Checked 2026-09-25
Each cluster can support configuration and registration for a maximum of 50,000 secured or unsecured SCCP or SIP phones.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- cluster sizing
- Deployment
- on-premises
- Region
- not restricted
- Release range
- CSR 14
- Checked
- 2026-09-25
Sources
- Cisco Collaboration Sizing Guide - Collaboration Sizing Guide for CSR 14 — Cisco Systems · tier 2 current vendor documentation · Virtual Nodes and Cluster Maximums
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM virtualization and sizing: source note cucm-virtualization-sizing-csr14-max-phones. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-virtualization-sizing-csr14-max-phones
BibTeX
@misc{warmtransfer-claim-cucm-virtualization-sizing-csr14-max-phones,
title = {Unified CM virtualization and sizing: source note cucm-virtualization-sizing-csr14-max-phones},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-virtualization-sizing-csr14-max-phones},
note = {Source note cucm-virtualization-sizing-csr14-max-phones, checked 2026-09-25}
}