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Free calls via VPN for FRITZ!Box Fon WLAN 7270/7390

There are several ways to make free calls but did you know that a VPN can be so economical?

Say you have connected two FRITZ!Box on two separate sites via VPN. Site A would like to contact Site B for free. You own for your calls the excellent dect phone Fritz!Fon mt-f. With the VPN, the FRITZ!Box and the dect fritz!Fon mt-f all calls could be made as internal calls, meaning totally free! Here is the method: Certified by the engineers of AVM. www.avm.de

Configuration used on FRITZ!Box Fon WLAN 7270/7390. Might be possible with all the other FRITZ!Box

Scenario: SIP interconnection between two VPN FRITZ!Boxes

Targets of Scenario

Connection between FRITZ!Boxes with SIP

Internal Telephony between these Boxes

External Telephony

External Telephony of „Clientbox“ over „Serverbox“

VPN Scenario between Box 1 and Box 2

Box 2: 192.168.25.1

How to configure and setup a VPN Connection between two FRITZ!Boxes, please have a Look on AVM VPN-Portal:

http://www.avm.de/en/vpn/

Box 1: 192.168.24.1

Target Scenario – SIP Interconnect

Box 1: Preparation

Activate Expert Mode

Change IP Adress

Configure Telephony Devices

Box 1: Activate Expert Mode

Box 1: Change IP Adress

Box 1: Telephony Devices

Box 1: New Extension

Box 2: Preparation

Activate Expert (Same like Box 1)

Change IP Address

Configure Internet Telephony

Configure DECT Extensions

Box 2: Activate Expert Mode

Important to have a different Network than Box 1

Box 2: Configure Internet Telephony

Box 2: DECT Extension

Internal Telephony Box 1

Internal Telephony Box 1

Telephony from Box 1 to Box 2

Telephony from Box 2 to Box 1

Telephony from Box 2 to Box 1

Explanation of internal Number Plan

**1 to **2:

Internal Numbers of analog Devices

**9:

Group Call

**50 bis **57:

Internal Numbers of ISDN Devices

**600 bis **603:

Internal Numbers of Answering Machines

**610 bis **619:

Internal Numbers of DECT Extensions

**620 bis **629:

Internal Numbers of SIP Exentions

*#:

use Keypad Mode

*11X#:

use Fixline Number X

*12X#:

useSIP-NumberX

Example: Phone of Box 2 calls Phone of Box 1: *# **610

Keypad is activated

**610

Internal Number 610

Appels gratuits via VPN pour FRITZ!Box Fon WLAN 7270/7390

Il existe plusieurs solutions pour téléphoner gratuitement mais saviez vous qu’un VPN pouvait être si économique ?

Imaginons que vous avez connectez en VPN deux FRITZ!Box sur deux sites distincts. Le site A souhaite contacter le site B gratuitement. Vous disposez pour vos communications téléphoniques de l’excellent Fritz!Fon mt-f qui est un téléphone sans file de type DECT. Grâce au VPN, à la FRITZ!Box et au téléphone dect fritz!fon mt-f tous vos appels peuvent être traité comme des appels internes, donc totalement gratuit ! Voici la méthode : Certifié par les ingénieurs d’AVM. www.avm.de/en

Configuration utilisée sur FRITZ!Box Fon WLAN 7270/7390. Sans doute possible avec toutes les autres fritz!box