diff --git a/Containers/mastercontainer/start.sh b/Containers/mastercontainer/start.sh
index 5f052ee5..ba725e55 100755
--- a/Containers/mastercontainer/start.sh
+++ b/Containers/mastercontainer/start.sh
@@ -114,6 +114,22 @@ It is set to '$APACHE_PORT'."
         exit 1
     fi
 fi
+if [ -n "$TALK_PORT" ]; then
+    if ! check_if_number "$TALK_PORT"; then
+        echo "You provided an Talk port but did not only use numbers.
+It is set to '$TALK_PORT'."
+        exit 1
+    elif ! [ "$TALK_PORT" -le 65535 ] || ! [ "$TALK_PORT" -ge 1 ]; then
+        echo "The provided Talk port is invalid. It must be between 1 and 65535"
+        exit 1
+    fi
+fi
+if [ -n "$APACHE_PORT" ] && [ -n "$TALK_PORT" ]; then
+    if [ "$APACHE_PORT" = "$TALK_PORT" ]; then
+        echo "APACHE_PORT and TALK_PORT are not allowed to be equal."
+        exit 1
+    fi
+fi
 if [ -n "$DOCKER_SOCKET_PATH" ]; then
     if ! echo "$DOCKER_SOCKET_PATH" | grep -q "^/" || echo "$DOCKER_SOCKET_PATH" | grep -q "/$"; then
         echo "You've set DOCKER_SOCKET_PATH but not to an allowed value.
diff --git a/Containers/nextcloud/entrypoint.sh b/Containers/nextcloud/entrypoint.sh
index 972b949f..7abf439a 100644
--- a/Containers/nextcloud/entrypoint.sh
+++ b/Containers/nextcloud/entrypoint.sh
@@ -360,8 +360,8 @@ if [ "$TALK_ENABLED" = 'yes' ]; then
     else
         php /var/www/html/occ app:update spreed
     fi
-    STUN_SERVERS="[\"$NC_DOMAIN:3478\"]"
-    TURN_SERVERS="[{\"server\":\"$NC_DOMAIN:3478\",\"secret\":\"$TURN_SECRET\",\"protocols\":\"udp,tcp\"}]"
+    STUN_SERVERS="[\"$NC_DOMAIN:$TALK_PORT\"]"
+    TURN_SERVERS="[{\"server\":\"$NC_DOMAIN:$TALK_PORT\",\"secret\":\"$TURN_SECRET\",\"protocols\":\"udp,tcp\"}]"
     SIGNALING_SERVERS="{\"servers\":[{\"server\":\"https://$NC_DOMAIN/standalone-signaling/\",\"verify\":true}],\"secret\":\"$SIGNALING_SECRET\"}"
     php /var/www/html/occ config:app:set spreed stun_servers --value="$STUN_SERVERS" --output json
     php /var/www/html/occ config:app:set spreed turn_servers --value="$TURN_SERVERS" --output json
diff --git a/Containers/talk/Dockerfile b/Containers/talk/Dockerfile
index 9ce9ab4d..212e3c54 100644
--- a/Containers/talk/Dockerfile
+++ b/Containers/talk/Dockerfile
@@ -1,7 +1,5 @@
 FROM ubuntu:focal-20220531
 
-EXPOSE 3478
-
 RUN set -ex; \
     \
     apt-get update; \
diff --git a/Containers/talk/start.sh b/Containers/talk/start.sh
index c1a363e8..8385c4fc 100644
--- a/Containers/talk/start.sh
+++ b/Containers/talk/start.sh
@@ -17,7 +17,7 @@ fi
 
 # Turn
 cat << TURN_CONF > "/etc/turnserver.conf"
-listening-port=3478
+listening-port=$TALK_PORT
 fingerprint
 lt-cred-mech
 use-auth-secret
@@ -36,8 +36,8 @@ set -x
 sed -i "s|#turn_rest_api_key.*|turn_rest_api_key = \"$JANUS_API_KEY\"|" /etc/janus/janus.jcfg
 sed -i "s|#full_trickle.*|full_trickle = true|g" /etc/janus/janus.jcfg
 sed -i 's|#stun_server.*|stun_server = "127.0.0.1"|g' /etc/janus/janus.jcfg
-sed -i "s|#stun_port.*|stun_port = 3478|g" /etc/janus/janus.jcfg
-sed -i "s|#turn_port.*|turn_port = 3478|g" /etc/janus/janus.jcfg
+sed -i "s|#stun_port.*|stun_port = $TALK_PORT|g" /etc/janus/janus.jcfg
+sed -i "s|#turn_port.*|turn_port = $TALK_PORT|g" /etc/janus/janus.jcfg
 sed -i 's|#turn_server.*|turn_server = "127.0.0.1"|g'/etc/janus/janus.jcfg
 sed -i 's|#turn_type .*|turn_type = "udp"|g' /etc/janus/janus.jcfg
 sed -i 's|#ice_ignore_list .*|ice_ignore_list = "udp"|g' /etc/janus/janus.jcfg
@@ -80,7 +80,7 @@ url = ws://127.0.0.1:8188
 [turn]
 apikey = ${JANUS_API_KEY}
 secret = ${TURN_SECRET}
-servers = turn:$NC_DOMAIN:3478?transport=tcp,turn:$NC_DOMAIN:3478?transport=udp
+servers = turn:$NC_DOMAIN:$TALK_PORT?transport=tcp,turn:$NC_DOMAIN:$TALK_PORT?transport=udp
 SIGNALING_CONF
 
 exec "$@"
diff --git a/docker-compose.yml b/docker-compose.yml
index b14ecabd..e2d82ef5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,6 +18,7 @@ services:
       - 8443:8443 # Can be removed when running behind a reverse proxy. See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
     # environment: # Is needed when using any of the options below
       # - APACHE_PORT=11000 # Is needed when running behind a reverse proxy. See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
+      # - TALK_PORT=3478 # This allows to adjust the port that the talk container is using.
       # - NEXTCLOUD_DATADIR=/mnt/ncdata # Allows to set the host directory for Nextcloud's datadir. See https://github.com/nextcloud/all-in-one#how-to-change-the-default-location-of-nextclouds-datadir
       # - NEXTCLOUD_MOUNT=/mnt/ # Allows the Nextcloud container to access the chosen directory on the host. See https://github.com/nextcloud/all-in-one#how-to-allow-the-nextcloud-container-to-access-directories-on-the-host
       # - DOCKER_SOCKET_PATH=/var/run/docker.sock # Needs to be specified if the docker socket on the host is not located in the default '/var/run/docker.sock'. Otherwise mastercontainer updates will fail.
diff --git a/manual-install/update-yaml.sh b/manual-install/update-yaml.sh
index cfa82761..1de5f038 100644
--- a/manual-install/update-yaml.sh
+++ b/manual-install/update-yaml.sh
@@ -63,6 +63,7 @@ sed -i 's|NEXTCLOUD_DATADIR=|NEXTCLOUD_DATADIR=nextcloud_aio_nextcloud_data
 sed -i 's|NEXTCLOUD_MOUNT=|NEXTCLOUD_MOUNT=/mnt/          # This allows the Nextcloud container to access directories on the host. It must never be equal to the value of NEXTCLOUD_DATADIR!|' sample.conf
 sed -i 's|DAILY_BACKUP_RUNNING=|DAILY_BACKUP_RUNNING=no          # When setting to yes, it will automatically update all installed Nextcloud apps upon container startup.|' sample.conf
 sed -i 's|APACHE_PORT=|APACHE_PORT=443          # Changing this to a different value than 443 will allow you to run it behind a reverse proxy.|' sample.conf
+sed -i 's|TALK_PORT=|TALK_PORT=3478          # This allows to adjust the port that the talk container is using.|' sample.conf
 sed -i 's|AIO_TOKEN=|AIO_TOKEN=123456          # Has no function but needs to be set!|' sample.conf
 sed -i 's|AIO_URL=|AIO_URL=localhost          # Has no function but needs to be set!|' sample.conf
 sed -i 's|NC_DOMAIN=|NC_DOMAIN=yourdomain.com          # TODO! Needs to be changed to the domain that you want to use for Nextcloud.|' sample.conf
diff --git a/php/containers.json b/php/containers.json
index 0b8387e4..4b842bc4 100644
--- a/php/containers.json
+++ b/php/containers.json
@@ -139,7 +139,8 @@
         "TALK_ENABLED=%TALK_ENABLED%",
         "ONLYOFFICE_HOST=nextcloud-aio-onlyoffice",
         "DAILY_BACKUP_RUNNING=%DAILY_BACKUP_RUNNING%",
-        "TZ=%TIMEZONE%"
+        "TZ=%TIMEZONE%",
+        "TALK_PORT=%TALK_PORT%"
       ],
       "maxShutdownTime": 10,
       "restartPolicy": "unless-stopped"
@@ -190,18 +191,19 @@
       "displayName": "Talk",
       "containerName": "nextcloud/aio-talk",
       "ports": [
-        "3478/tcp",
-        "3478/udp"
+        "%TALK_PORT%/tcp",
+        "%TALK_PORT%/udp"
       ],
       "internalPorts": [
-        "3478"
+        "%TALK_PORT%"
       ],
       "environmentVariables": [
         "NC_DOMAIN=%NC_DOMAIN%",
         "TURN_SECRET=%TURN_SECRET%",
         "SIGNALING_SECRET=%SIGNALING_SECRET%",
         "JANUS_API_KEY=%JANUS_API_KEY%",
-        "TZ=%TIMEZONE%"
+        "TZ=%TIMEZONE%",
+        "TALK_PORT=%TALK_PORT%"
       ],
       "volumes": [],
       "secrets": [
diff --git a/php/public/index.php b/php/public/index.php
index f975263b..e553e256 100644
--- a/php/public/index.php
+++ b/php/public/index.php
@@ -98,6 +98,7 @@ $app->get('/containers', function ($request, $response, $args) use ($container)
         'is_daily_backup_running' => $configurationManager->isDailyBackupRunning(),
         'timezone' => $configurationManager->GetTimezone(),
         'skip_domain_validation' => $configurationManager->shouldDomainValidationBeSkipped(),
+        'talk_port' => $configurationManager->GetTalkPort(),
     ]);
 })->setName('profile');
 $app->get('/login', function ($request, $response, $args) use ($container) {
diff --git a/php/src/ContainerDefinitionFetcher.php b/php/src/ContainerDefinitionFetcher.php
index 37d20e81..db6dae22 100644
--- a/php/src/ContainerDefinitionFetcher.php
+++ b/php/src/ContainerDefinitionFetcher.php
@@ -71,6 +71,10 @@ class ContainerDefinitionFetcher
             foreach ($entry['ports'] as $port) {
                 if($port === '%APACHE_PORT%/tcp') {
                     $port = $this->configurationManager->GetApachePort() . '/tcp';
+                } elseif($port === '%TALK_PORT%/tcp') {
+                    $port = $this->configurationManager->GetTalkPort() . '/tcp';
+                } elseif($port === '%TALK_PORT%/udp') {
+                    $port = $this->configurationManager->GetTalkPort() . '/udp';
                 }
                 $ports->AddPort($port);
             }
@@ -79,6 +83,8 @@ class ContainerDefinitionFetcher
             foreach ($entry['internalPorts'] as $internalPort) {
                 if($internalPort === '%APACHE_PORT%') {
                     $internalPort = $this->configurationManager->GetApachePort();
+                } elseif($internalPort === '%TALK_PORT%') {
+                    $internalPort = $this->configurationManager->GetTalkPort();
                 }
                 $internalPorts->AddInternalPort($internalPort);
             }
diff --git a/php/src/Data/ConfigurationManager.php b/php/src/Data/ConfigurationManager.php
index 584f9e46..ad4e4060 100644
--- a/php/src/Data/ConfigurationManager.php
+++ b/php/src/Data/ConfigurationManager.php
@@ -395,6 +395,13 @@ class ConfigurationManager
         return $this->GetEnvironmentalVariableOrConfig($envVariableName, $configName, $defaultValue);
     }
 
+    public function GetTalkPort() : string {
+        $envVariableName = 'TALK_PORT';
+        $configName = 'talk_port';
+        $defaultValue = '3478';
+        return $this->GetEnvironmentalVariableOrConfig($envVariableName, $configName, $defaultValue);
+    }
+
     /**
      * @throws InvalidSettingConfigurationException
      */
diff --git a/php/src/Docker/DockerActionManager.php b/php/src/Docker/DockerActionManager.php
index 6df3e635..ac4231ea 100644
--- a/php/src/Docker/DockerActionManager.php
+++ b/php/src/Docker/DockerActionManager.php
@@ -250,6 +250,8 @@ class DockerActionManager
                     $replacements[1] = $this->configurationManager->GetSelectedRestoreTime();
                 } elseif ($out[1] === 'APACHE_PORT') {
                     $replacements[1] = $this->configurationManager->GetApachePort();
+                } elseif ($out[1] === 'TALK_PORT') {
+                    $replacements[1] = $this->configurationManager->GetTalkPort();
                 } elseif ($out[1] === 'NEXTCLOUD_MOUNT') {
                     $replacements[1] = $this->configurationManager->GetNextcloudMount();
                 } elseif ($out[1] === 'BACKUP_RESTORE_PASSWORD') {
diff --git a/php/templates/containers.twig b/php/templates/containers.twig
index 30700de3..02cc854c 100644
--- a/php/templates/containers.twig
+++ b/php/templates/containers.twig
@@ -438,9 +438,9 @@
                             <input type="checkbox" id="collabora" name="collabora"><label for="collabora">Collabora (Nextcloud Office)</label><br>
                         {% endif %}
                         {% if is_talk_enabled == true %}
-                            <input type="checkbox" id="talk" name="talk" checked="checked"><label for="talk">Nextcloud Talk (needs ports 3478/TCP and 3478/UDP open in your firewall/router)</label><br><br>
+                            <input type="checkbox" id="talk" name="talk" checked="checked"><label for="talk">Nextcloud Talk (needs ports {{ talk_port }}/TCP and {{ talk_port }}/UDP open in your firewall/router)</label><br><br>
                         {% else %}
-                            <input type="checkbox" id="talk" name="talk"><label for="talk">Nextcloud Talk (needs ports 3478/TCP and 3478/UDP open in your firewall/router)</label><br><br>
+                            <input type="checkbox" id="talk" name="talk"><label for="talk">Nextcloud Talk (needs ports {{ talk_port }}/TCP and {{ talk_port }}/UDP open in your firewall/router)</label><br><br>
                         {% endif %}
                         {% if is_onlyoffice_enabled == true %}
                             <input type="checkbox" id="onlyoffice" name="onlyoffice" checked="checked"><label for="onlyoffice">OnlyOffice (only supported on x64)</label><br>
diff --git a/tests/QA/060-environmental-variables.md b/tests/QA/060-environmental-variables.md
index 08ddd6cd..550e7f24 100644
--- a/tests/QA/060-environmental-variables.md
+++ b/tests/QA/060-environmental-variables.md
@@ -1,6 +1,7 @@
 # Environmental variables
 
 - [ ] When starting the mastercontainer with `-e APACHE_PORT=11000` on a clean instance, the domaincheck container should be started with that same port published. That makes sure that also the Apache container will use that port later on. Using a value here that is not a port will not allow the mastercontainer to start correctly.
+- [ ] When starting the mastercontainer with `-e TALK_PORT=3479` on a clean instance, the talk container should use this port later on. Using a value here that is not a port will not allow the mastercontainer to start correctly. Also it should stop if apache_port and talk_port are set to the same value.
 - [ ] Make also sure that reverse proxies work by following https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md#reverse-proxy-documentation and following [001-initial-setup.md](./001-initial-setup.md) and [002-new-instance.md](./002-new-instance.md)
 - [ ] When starting the mastercontainer with `-e SKIP_DOMAIN_VALIDATION=true` on a clean instance, it should skip the domain verification. So it should accept any domain that you type in then.
 - [ ] When starting the mastercontainer with `-e NEXTCLOUD_DATADIR="/mnt/testdata"` it should map that location from `/mnt/testdata` to `/mnt/ncdata` inside the Nextcloud container. Not having adjusted the permissions correctly before starting the Nextcloud container the first time will not allow the Nextcloud container to start correctly. See https://github.com/nextcloud/all-in-one#how-to-change-the-default-location-of-nextclouds-datadir for allowed values.