lync A/V, Web Conferencing and Application Sharing

Suy Peang 86 Reputation points

lync A/V, Web Conferencing and Application Sharing issued

Lync Server
Lync Server
A family of Microsoft enterprise-grade servers that provide the backbone for real-time communications within Office. Superseded by Skype for Business.
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  1. JimmyYang-MSFT 39,241 Reputation points Microsoft Vendor

    Hi @Suy Peang

    To troubleshoot this issue, we recommend you check it from the following ways:

    1.Firewall ports: please make sure you have opened these ports (UDP 3478, TCP 443, UDP/TCP 50000-59999). The following picture shows these ports for your reference:

    2.DNS Records: please make sure you have these records(access.<sip-domain>, av.<sip-domain>,conf.<sip-domain>) on your edge server.
    3.Certificates: you can refer to the following picture to check you have these certicates SAN on your edge server.
    4.Reverse Proxy server: you also need to deploy this server in your topology. For more details about how to deploy it, you can learn it from:

    If the response is helpful, please click "Accept Answer" and upvote it.

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