Source note · Message waiting indicator troubleshooting
Cisco IOS SIP voice gateways support MWI both through SUBSCRIBE/NOTIFY and through unsolicited NOTIFY sent by the voicemail server without a subscription.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco IOS voice gateways
- Subsystem
- SIP MWI
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Cisco IOS Release 15M&T
- Checked
- 2026-09-25
Sources
- SIP Configuration Guide, Cisco IOS Release 15M&T - Configuring SIP MWI Features — Cisco Systems · tier 2 current vendor documentation · Configuring SIP MWI Features, information section
Cite this note
APA
WarmTransfer. (2026, September 25). Message waiting indicator troubleshooting: source note mwi-troubleshooting-ios-two-mechanisms. WarmTransfer. https://warmtransfer.net/knowledge/claims/mwi-troubleshooting-ios-two-mechanisms
BibTeX
@misc{warmtransfer-claim-mwi-troubleshooting-ios-two-mechanisms,
title = {Message waiting indicator troubleshooting: source note mwi-troubleshooting-ios-two-mechanisms},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/mwi-troubleshooting-ios-two-mechanisms},
note = {Source note mwi-troubleshooting-ios-two-mechanisms, checked 2026-09-25}
}