Source note · Message waiting indicator troubleshooting
Unity Connection SIP-trunk MWI appears to depend on Unified CM accepting unsolicited SIP NOTIFY on the trunk, so an unchecked Accept Unsolicited Notification box on the Unity Connection trunk's security profile is a likely cause of SIP-integrated MWIs failing to change.
inferred · Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- SIP MWI signalling
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unity Connection Release 15; Unified CM Release 15
- Status
- inferred
- Checked
- 2026-09-25
Sources
- Cisco Unified Communications Manager SIP Integration Guide for Cisco Unity Connection Release 15 - Setting Up a Cisco Unified Communications Manager SIP Trunk Integration — Cisco Systems · tier 2 current vendor documentation · SIP trunk security profile task step 3, Table 2; read with the Accept Unsolicited Notification field description in cisco-cucm15-security-sip-trunk-profile
Cite this note
APA
WarmTransfer. (2026, September 25). Message waiting indicator troubleshooting: source note mwi-troubleshooting-sip-unsolicited-inference. WarmTransfer. https://warmtransfer.net/knowledge/claims/mwi-troubleshooting-sip-unsolicited-inference
BibTeX
@misc{warmtransfer-claim-mwi-troubleshooting-sip-unsolicited-inference,
title = {Message waiting indicator troubleshooting: source note mwi-troubleshooting-sip-unsolicited-inference},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/mwi-troubleshooting-sip-unsolicited-inference},
note = {Source note mwi-troubleshooting-sip-unsolicited-inference, checked 2026-09-25}
}