diff --git a/meet/server/config/config.js b/meet/server/config/config.js
index 2df7235f..96ca7e9d 100644
--- a/meet/server/config/config.js
+++ b/meet/server/config/config.js
@@ -1,157 +1,159 @@
 const os = require('os');
 
 module.exports =
 {
     // Authentication token for API (not websocket) requests
     authToken: process.env.AUTH_TOKEN,
     // Turn server configuration
     turn: process.env.TURN_SERVER === 'none' ? null : {
         urls: [
+            // Using transport=tcp prevents the use of udp for the connection to the server, which is useful for testing,
+            // but most likely not desired for production: https://datatracker.ietf.org/doc/html/rfc5766#section-2.1
             process.env.TURN_SERVER || 'turn:127.0.0.1:3478?transport=tcp'
         ],
         staticSecret: process.env.TURN_STATIC_SECRET || 'uzYguvIl9tpZFMuQOE78DpOi6Jc7VFSD0UAnvgMsg5n4e74MgIf6vQvbc6LWzZjz',
     },
     /*
     // redis server options used for session storage
     redisOptions: {
         host: process.env.REDIS_IP || '127.0.0.1',
         port: process.env.REDIS_PORT || 6379,
         db: process.env.REDIS_DB || '3',
         ...(process.env.REDIS_PASSWORD ? { password: process.env.REDIS_PASSWORD } : {})
     },
     */
     // Webhook URL
     webhookURL: process.env.WEBHOOK_URL,
     // Webhook authentication token
     webhookToken: process.env.WEBHOOK_TOKEN,
     // if you use encrypted private key the set the passphrase
     tls: {
         // passphrase: 'key_password'
         cert: process.env.SSL_CERT || `/etc/pki/tls/certs/kolab.hosted.com.cert`,
         key: process.env.SSL_KEY || `/etc/pki/tls/certs/kolab.hosted.com.key`,
     },
     // listening Host or IP 
     // If omitted listens on every IP. ("0.0.0.0" and "::")
     listeningHost: process.env.LISTENING_HOST || '0.0.0.0',
     // Listening port for https server.
     listeningPort: process.env.LISTENING_PORT || 12443,
     // Any http request is redirected to https.
     // Listening port for http server.
     listeningRedirectPort: 12080,
     // Listens only on http, only on listeningPort
     // listeningRedirectPort disabled
     // use case: loadbalancer backend
     httpOnly: true,
     publicDomain: process.env.PUBLIC_DOMAIN || '127.0.0.1:12443',
     pathPrefix: '/meetmedia',
     // WebServer/Express trust proxy config for httpOnly mode
     // You can find more info:
     //  - https://expressjs.com/en/guide/behind-proxies.html
     //  - https://www.npmjs.com/package/proxy-addr
     // use case: loadbalancer backend
     trustProxy: '',
     // When truthy, the room will be open to all users when as long as there
     // are allready users in the room
     activateOnHostJoin: true,
     // Room size before spreading to new router
     routerScaleSize: process.env.ROUTER_SCALE_SIZE || 40,
     // Socket timout value
     requestTimeout: 20000,
     // Socket retries when timeout
     requestRetries: 3,
     // Mediasoup settings
     mediasoup: {
         numWorkers: process.env.MEDIASOUP_NUM_WORKERS || Object.keys(os.cpus()).length,
         // mediasoup Worker settings.
         worker: {
             logLevel: 'warn',
             logTags: [
                 'info',
                 'ice',
                 'dtls',
                 'rtp',
                 'srtp',
                 'rtcp'
             ],
             rtcMinPort: 40000,
             rtcMaxPort: 49999
         },
         // mediasoup Router settings.
         router: {
             // Router media codecs.
             mediaCodecs: [
                 {
                     kind      : 'audio',
                     mimeType  : 'audio/opus',
                     clockRate : 48000,
                     channels  : 2
                 },
                 {
                     kind       : 'video',
                     mimeType   : 'video/VP8',
                     clockRate  : 90000,
                     parameters :
                     {
                         'x-google-start-bitrate' : 1000
                     }
                 },
                 {
                     kind       : 'video',
                     mimeType   : 'video/VP9',
                     clockRate  : 90000,
                     parameters :
                     {
                         'profile-id'             : 2,
                         'x-google-start-bitrate' : 1000
                     }
                 },
                 {
                     kind       : 'video',
                     mimeType   : 'video/h264',
                     clockRate  : 90000,
                     parameters :
                     {
                         'packetization-mode'      : 1,
                         'profile-level-id'        : '4d0032',
                         'level-asymmetry-allowed' : 1,
                         'x-google-start-bitrate'  : 1000
                     }
                 },
                 {
                     kind       : 'video',
                     mimeType   : 'video/h264',
                     clockRate  : 90000,
                     parameters :
                     {
                         'packetization-mode'      : 1,
                         'profile-level-id'        : '42e01f',
                         'level-asymmetry-allowed' : 1,
                         'x-google-start-bitrate'  : 1000
                     }
                 }
             ]
         },
         // mediasoup WebRtcTransport settings.
         webRtcTransport: {
             listenIps: [
                 { ip: process.env.WEBRTC_LISTEN_IP, announcedIp: null }
             ],
             initialAvailableOutgoingBitrate: 1000000,
             minimumAvailableOutgoingBitrate: 600000,
             // Additional options that are not part of WebRtcTransportOptions.
             maxIncomingBitrate: 1500000
         }
     }
 
     /*
     ,
     // Prometheus exporter
     prometheus: {
         deidentify: false, // deidentify IP addresses
         // listen: 'localhost', // exporter listens on this address
         numeric: false, // show numeric IP addresses
         port: 8889, // allocated port
         quiet: false // include fewer labels
     }
     */
 };