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Certificate names and Contact

The certificate name and the SIP Contact need to be names the peer accepts. Teams and Webex Local Gateway do not share a wildcard rule.

Learn in 5 minutes

  1. Match a certificate name to the SIP name
  2. Use an FQDN in a Teams Contact
  3. Keep Webex Local Gateway off wildcard certificates

Visual

TLS INVITE with an FQDN Contact · study drawing · cyphermonkeylabs.com SBCTeams proxy INVITE 100 180 200

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The same file can be acceptable to one peer and rejected by another.

Worked example

Read the Teams Contact Dissect the TLS INVITE. Is Contact an FQDN or an IP?

    Vendor menus, ports, and license names change. Confirm before relying on a sentence that is not an RFC.

    Fault

    Direct Routing returns 403. The INVITE is TLS to port 5061, and Contact uses 203.0.113.20.

    The plan and protocol articles require a name in Contact.

    Quiz

    RFC 5922 is about


    A Teams Contact that is an IP address


    Wildcard names in the certificate CN or SAN for Direct Routing are


    Wildcard certificates for a Webex Local Gateway are


    The Direct Routing signaling port in this lesson is


    sbc1.example.com in the lab Contact is


    Ecosystem

    Glossary, sister systems, and the integration seam for this room.

    Workforce management WFM forecasts volume and builds schedules. It consumes contact-center events. It does not parse Via headers. When a forecast is wrong, the SIP symptom is usually queue delay and 480 or carrier congestion, not a broken dialog ID.

    Programmable communications APIs Twilio’s docs home is API reference, tutorials, and integration for Twilio products. Elastic SIP Trunking is the SIP-shaped product already cited in this lab. This page does not define the word CPaaS from an RFC. Read the vendor page before you copy a diagram that uses that word.

    Glossary · Ecosystem map · Ports · Troubleshooting

    Sources and go deeper