Source note · Cisco Unity Connection voicemail and migration

From Unity Connection 15SU4, Microsoft Graph API is the only supported option for Office 365 unified messaging integration because EWS is being deprecated.

Checked 2026-09-24

Microsoft Graph API is the only supported option for Office 365 integration as Exchange Web Services (EWS) is going to be deprecated.

Vendor: Cisco
Product: Cisco Unity Connection
Subsystem: unified messaging
Deployment: on-premises
Region: not restricted
Release range: 15SU4 and later
Checked: 2026-09-24

Sources

Release Notes for Cisco Unity Connection Release 15 Service Update 4 — Cisco Systems · tier 2 current vendor documentation · New and Changed Support or Functionality

Cite this note

APA

WarmTransfer. (2026, September 24). Cisco Unity Connection voicemail and migration: source note cucm-unity-connection-15su4-graph-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-unity-connection-15su4-graph-only

BibTeX

@misc{warmtransfer-claim-cucm-unity-connection-15su4-graph-only,
  title  = {Cisco Unity Connection voicemail and migration: source note cucm-unity-connection-15su4-graph-only},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-unity-connection-15su4-graph-only},
  note   = {Source note cucm-unity-connection-15su4-graph-only, checked 2026-09-24}
}

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