SIP Configuration Guide, Cisco IOS Release 15M&T - Configuring SIP MWI Features

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/sip/configuration/15-mt/sip-config-15-mt-book/voi-sip-mwi.html

Published

2014-11-25

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco documentation terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

• Cisco's IOS SIP MWI guide uses debug ccsip messages to observe the SUBSCRIBE/NOTIFY exchange and debug vpm all to observe visual MWI state changes on analog voice ports. in context
• On Cisco IOS SIP gateways the voicemail server is set with the mwi-server command, and its optional unsolicited keyword selects unsolicited NOTIFY rather than subscription. in context
• The IOS SIP NOTIFY-to-QSIG MWI translation feature supports only SIP unsolicited NOTIFY, not subscribe-based NOTIFY. in context
• Cisco IOS SIP voice gateways support MWI both through SUBSCRIBE/NOTIFY and through unsolicited NOTIFY sent by the voicemail server without a subscription. in context

Cite this source record

APA

WarmTransfer. (2014, November 25). SIP Configuration Guide, Cisco IOS Release 15M&T - Configuring SIP MWI Features. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-ios-sip-config-15mt-mwi

BibTeX

@misc{warmtransfer-cisco-ios-sip-config-15mt-mwi,
  title  = {SIP Configuration Guide, Cisco IOS Release 15M&T - Configuring SIP MWI Features},
  author = {{WarmTransfer}},
  year   = {2014},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-ios-sip-config-15mt-mwi},
  note   = {Cisco Systems, accessed 2026-09-25}
}