diff --git a/.env.example b/.env.example
index c97e871..b1aa69c 100644
--- a/.env.example
+++ b/.env.example
@@ -8,9 +8,9 @@
 #   4. docker exec -it easy-asterisk easy-asterisk
 #
 # Port forwarding required on your router:
-#   5061/tcp   → SIP TLS signaling
-#   3478/udp   → STUN/TURN (NAT traversal + media relay)
-#   3478/tcp   → TURN TCP fallback (for restrictive networks)
+#   5061/tcp        → SIP TLS signaling
+#   3478/udp+tcp    → STUN/TURN (NAT traversal + media relay)
+#                     (change with TURN_PORT if 3478 is taken)
 #   10000-20000/udp → RTP media (or your custom range below)
 #
 # How it works:
@@ -58,7 +58,7 @@ LOCAL_CIDR=
 HAS_VLANS=n
 VLAN_SUBNETS=
 
-# ── TURN/STUN Credentials ────────────────────────────────────
+# ── TURN/STUN Settings ──────────────────────────────────────
 # Used by coturn for TURN relay authentication.
 # If TURN_PASSWORD is empty, a random password is generated on
 # first startup and saved to /etc/easy-asterisk/config.
@@ -68,6 +68,12 @@ VLAN_SUBNETS=
 TURN_USERNAME=easyasterisk
 TURN_PASSWORD=
 
+# ── TURN/STUN Port ──────────────────────────────────────────
+# Default: 3478 (standard STUN/TURN port)
+# Change if 3478 is already in use (e.g., UniFi controller uses 3478/udp).
+# Common alternative: 3479
+TURN_PORT=3478
+
 # ── TURN Relay Port Range ─────────────────────────────────────
 # Ports coturn uses for media relay. Forward this range on your router.
 # Default is 100 ports (enough for ~50 simultaneous relayed calls).
diff --git a/Dockerfile b/Dockerfile
index 220f5e4..0731d01 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -79,7 +79,7 @@ EXPOSE 8080/tcp
 EXPOSE 8088/tcp
 EXPOSE 8089/tcp
 
-# STUN (if running coturn in same container)
+# STUN (if running coturn in same container; default 3478, configurable via TURN_PORT)
 EXPOSE 3478/udp
 
 # RTP media range (use --network host in production for full range)
diff --git a/docker-compose.yml b/docker-compose.yml
index cfeea95..5c97279 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -53,7 +53,7 @@ services:
       # ── TURN/STUN Server ──
       # Points to the coturn service (auto-configured)
       - TURN_ENABLED=y
-      - TURN_SERVER=${DOMAIN_NAME:?}:3478
+      - TURN_SERVER=${DOMAIN_NAME:?}:${TURN_PORT:-3478}
       - TURN_USERNAME=${TURN_USERNAME:-easyasterisk}
       - TURN_PASSWORD=${TURN_PASSWORD:-}
 
@@ -90,7 +90,7 @@ services:
       - DETECT_EXTERNAL_IP=${DETECT_EXTERNAL_IP:-yes}
     command:
       - -n
-      - --listening-port=3478
+      - --listening-port=${TURN_PORT:-3478}
       - --fingerprint
       - --lt-cred-mech
       - --user=${TURN_USERNAME:-easyasterisk}:${TURN_PASSWORD:-changeme}
@@ -104,7 +104,7 @@ services:
       - --log-file=stdout
     restart: unless-stopped
     healthcheck:
-      test: ["CMD-SHELL", "turnutils_stunclient 127.0.0.1 >/dev/null 2>&1"]
+      test: ["CMD-SHELL", "turnutils_stunclient -p ${TURN_PORT:-3478} 127.0.0.1 >/dev/null 2>&1"]
       interval: 10s
       timeout: 5s
       retries: 3
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index ec73fa3..1f37487 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -94,7 +94,7 @@ fi
 mkdir -p "$CONFIG_DIR"
 
 # Determine TURN/STUN server address
-turn_server="${TURN_SERVER:-${DOMAIN_NAME:-$local_ip}:3478}"
+turn_server="${TURN_SERVER:-${DOMAIN_NAME:-$local_ip}:${TURN_PORT:-3478}}"
 
 cat > "$CONFIG_FILE" << EOF
 # Easy Asterisk Configuration (Docker) - $(date)
diff --git a/easy-asterisk-v0.10.0.sh b/easy-asterisk-v0.10.0.sh
index db983d5..6b7230e 100644
--- a/easy-asterisk-v0.10.0.sh
+++ b/easy-asterisk-v0.10.0.sh
@@ -1599,7 +1599,7 @@ show_firewall_guide() {
     echo "   - Protocol: UDP/TCP"
     echo "   - Source: VLAN 10 Net"
     echo "   - Dest:   ${CURRENT_PUBLIC_IP:-Server_IP}"
-    echo "   - Port:   3478"
+    echo "   - Port:   3478 (or your TURN_PORT if changed)"
     echo ""
     echo "STEP 3: Create Rule 2 (The Relay Range - CRITICAL)"
     echo "   - Action: Pass (Allow)"
@@ -1621,7 +1621,7 @@ show_firewall_guide() {
     echo "STEP 2: Create Rule."
     echo "   - Interface: WAN"
     echo "   - Protocol: UDP"
-    echo "   - Dest. Port: 3478 (and 49152-65535)"
+    echo "   - Dest. Port: 3478 (or your TURN_PORT) and 49152-65535"
     echo "   - Redirect IP: ${CURRENT_PUBLIC_IP:-Server_IP}"
     echo ""
     read -p "Press Enter to return..."
@@ -2748,7 +2748,9 @@ configure_local_client() {
              read -p "TURN Host [${server}]: " th
              turn_host="${th:-$server}"
         fi
-        turn_config="turn_server turn:${t_user}:${t_pass}@${turn_host}:3478"
+        read -p "TURN Port [3478]: " t_port
+        t_port="${t_port:-3478}"
+        turn_config="turn_server turn:${t_user}:${t_pass}@${turn_host}:${t_port}"
     fi
     
     # Update config file for TURN