Cisco's 12.x Preferred Architecture recommends Session Management Edition to centralize dial plan and trunking for four or more clusters, and a full mesh of SIP trunks for smaller deployments.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- Multi-cluster design
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 12.x design guidance
- Checked
- 2026-10-01
Sources
- Preferred Architecture for Cisco Collaboration 12.x Enterprise On-Premises Deployments, CVD - Call Control — Cisco Systems · tier 2 current vendor documentation · Call Control > multi-cluster deployments
Cite this note
APA
WarmTransfer. (2026, October 1). Setting up ILS and Global Dial Plan Replication in Unified CM: source note cucm-ils-gdpr-setup-pa-sme-four-clusters. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-pa-sme-four-clusters
BibTeX
@misc{warmtransfer-claim-cucm-ils-gdpr-setup-pa-sme-four-clusters,
title = {Setting up ILS and Global Dial Plan Replication in Unified CM: source note cucm-ils-gdpr-setup-pa-sme-four-clusters},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-pa-sme-four-clusters},
note = {Source note cucm-ils-gdpr-setup-pa-sme-four-clusters, checked 2026-10-01}
}