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Configuring Behnke Door Stations with Two Behnke Indoor Stations in Routed Networks with a Network Bridge

1. Introduction

This setup guide describes how to connect two separate networks via a network bridge so that Behnke door stations and indoor stations can communicate across networks.

The two networks are connected to each other via a router (routed). Since Behnke devices only find each other automatically within one network, a network bridge is also set up.

The network bridge ensures that the devices can detect each other and communicate with each other across network boundaries.

It is assumed that:

• both networks are routed to each other
• all devices have already been started
• the basic initial setup has been completed
• valid IP addresses have been assigned
• the web interfaces are reachable

2. Network Overview

Network A (192.168.16.0/24)

• Door station A → 192.168.16.88
• Indoor station A → 192.168.16.90

Function:

• Button 1 → Indoor station A
• Button 2 → Indoor station B (across networks)

Network B (192.168.50.0/24)

• Door station B → 192.168.50.69
• Indoor station B → 192.168.50.155

Function:

• Button 1 → Indoor station B

Connection

• Router connects both networks
• Network bridge is set up:

from door station A → door station B

3. Function Overview

Door station A

• Button 1 → Indoor station A (local)
• Button 2 → Indoor station B (via network bridge)

Door station B

• Button 1 → Indoor station B (local)

4. Network and Port Requirements

For communication to work, the networks must not only be routed, but the necessary ports must also be open.

Basic requirements

• Network A ↔ Network B reachable
• Firewall allows traffic in both directions

Required ports (bidirectional) Communication / device discovery

• UDP 4000
• UDP 4001
• UDP 4005
• UDP 5000

Web interface

• TCP 80 (HTTP)
• TCP 443 (HTTPS)

SIP (if used)

• UDP 5060
• UDP 5061

Audio / video (RTP)

• UDP 10000 – 20000

Important:

The network bridge itself does not require any ports of its own, but uses the existing communication.

5. Configuring Door Station A (Active Bridge Endpoint)

5.1 "General" menu

• Operating mode: IP intercom
• Device name: "StationA"

5.2 "Intercom" menu

• Group: 1

5.3 "IP intercom" menu → Network bridge

• Network bridge remote station: 192.168.50.69

This makes:

• Door station A = active bridge endpoint
• Door station B = passive bridge endpoint

After a successful connection, the status is ONLINE

5.4 Button assignment

• Button 1 → com:101 → Indoor station A (group 1 / ID 01)
• Button 2 → com:201 → Indoor station B (group 2 / ID 01, across networks)

6. Configuring Indoor Station A

"General" menu

• Device name: "Innenstelle A"
• Operating mode: IP intercom

"Intercom" menu

• Group: 1
• ID: 1

7. Configuring Door Station B (Passive Bridge Endpoint)

   ? Do not configure a network bridge!

"General" menu

• Device name: "Eingang B"
• Operating mode: IP intercom

"Intercom" menu

• Group: 2

Button assignment

• Button 1 → com:201

→ Indoor station B (group 2 / ID 01)

8. Configuring Indoor Station B

"General" menu

• Device name: "Innenstelle B"
• Operating mode: IP intercom

"Intercom" menu

• Group: 2
• ID: 1

8. Topology

Intercom

• The topology shows the existing intercom groups. The indoor station or door station on which the active network bridge is set up is marked accordingly.

10. Function Test

• Press button 1 on door station A → Indoor station A rings
• Press button 2 on door station A → Indoor station B rings (across networks)
• Press button 1 on door station B → Indoor station B rings

11. Technical Note

• The network bridge logically connects two networks with each other
• It is set up on only one station
• Communication takes place automatically in both directions
• The prerequisite is that all devices can reach each other (routing!)