Changing the Lync 2013 XMPP listening port

After being asked whether it was possible to change the port on which the Lync 2013 edge role listens for XMPP traffic, I spent some time searching the intertubes for answers, all to no avail. Then I got sidetracked and forgot about it; meanwhile, the person who’d originally asked came back with the answer:

  1. Log in to a Lync front-end server using an account that has CSAdministrator permissions
  2. Run
    Set-CsEdgeServer -Identity fqdn of edge -XMPPInternalPort portYouWant
  3. Restart the Lync Server XMPP Translating Gateway Proxy service.

Voila! Your Lync edge server will now use the port you specify.

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