A student's open lab: learning and sharing, free for everyone.

SIP UniverseFree University

Home / Cloud voice and CCaaS SIP / Webex Calling Local Gateway

Webex Calling Local Gateway

An IOS XE Local Gateway uses SIP TLS and SRTP. Third-party SBCs use a certificate-based trunk. Wildcard certificates are not supported. ByoPSTN means bring your own PSTN.

Learn in 5 minutes

  1. State the IOS XE TLS and SRTP requirement
  2. Use a certificate-based trunk for a third-party SBC
  3. Define ByoPSTN from the get-started article

Visual

TLS and SRTP toward the Webex peer · study drawing · cyphermonkeylabs.com Local GatewayWebex INVITE 100 200 ACK

SVG HTML PNG

192.0.2.40 stands for the Webex peer. Real names are in the IOS XE article.

Worked example

Read the Local Gateway offer The Local Gateway offer is SRTP. Which transport is in the m= line?

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

    Fault

    The Local Gateway trunk fails certificate checks. The certificate uses a wildcard name that a Teams trunk on the same SBC accepted.

    Teams wildcard support does not transfer to this trunk.

    Quiz

    The IOS XE Local Gateway article specifies


    A third-party SBC as Local Gateway uses


    Wildcard certificates for Local Gateway are


    ByoPSTN means


    The lab offer profile is


    Cloud Connected PSTN and Local Gateway are


    Ecosystem

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

    E911 / emergency calling Location has to ride with the call. RFC 6881 is the BCP, RFC 6442 carries location in SIP, and the FCC MLTS page states Kari’s Law and RAY BAUM’s Act obligations for multi-line systems.

    Glossary · Ecosystem map · Ports · Troubleshooting

    Sources and go deeper