For SCCP integrations that have two or more port groups, Cisco notes that not all port groups may be configured correctly, which is a listed cause of MWI delay.

Checked 2026-09-25

If there are two or more port groups in the phone system integration, the port groups may not all be configured correctly
Vendor
Cisco
Product
Cisco Unity Connection
Subsystem
MWI delay
Deployment
on-premises
Region
not restricted
Release range
Unity Connection Release 14
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Message waiting indicator troubleshooting: source note mwi-troubleshooting-cuc-delay-port-groups. WarmTransfer. https://warmtransfer.net/knowledge/claims/mwi-troubleshooting-cuc-delay-port-groups

BibTeX

@misc{warmtransfer-claim-mwi-troubleshooting-cuc-delay-port-groups,
  title  = {Message waiting indicator troubleshooting: source note mwi-troubleshooting-cuc-delay-port-groups},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/mwi-troubleshooting-cuc-delay-port-groups},
  note   = {Source note mwi-troubleshooting-cuc-delay-port-groups, checked 2026-09-25}
}

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