Fritz Fon C5 Hd Telefonie Deaktivieren

Many users of AVM's FRITZ!Box routers also use the associated FRITZ!Fon handsets. One particularly useful feature is HD telephony, offering improved voice quality. However, there might be situations where you need to deactivate HD telephony (High Definition telephony) on your FRITZ!Fon C5. This article provides a clear and straightforward guide on how to do just that.

Reasons for Deactivating HD Telephony

Before delving into the "how-to," let's briefly consider why you might want to disable HD telephony. While generally desirable, some circumstances make it less ideal:

Compatibility Issues: Older telephone systems or devices might not fully support HD voice, leading to garbled audio or connection problems.
Bandwidth Concerns: HD telephony requires more bandwidth than standard telephony. If you have a limited internet connection or experience frequent bandwidth congestion, disabling HD can improve call stability.
Troubleshooting: If you're experiencing call quality problems, disabling HD temporarily can help you isolate whether the issue stems from the HD voice feature itself or other factors like internet connectivity or device malfunction.
Battery Life: In some cases, maintaining the higher bitrate of HD telephony can impact the battery life of your FRITZ!Fon handset, especially on older models or with heavy usage.

Deactivating HD Telephony: Step-by-Step Guide

The process of disabling HD telephony on your FRITZ!Fon C5 involves accessing the FRITZ!Box interface. Here's a detailed breakdown:

1. Accessing the FRITZ!Box Interface

The FRITZ!Box interface is your central control panel for managing your router's settings. You can access it through a web browser:

Open a web browser (e.g., Chrome, Firefox, Safari) on a computer or mobile device connected to your FRITZ!Box network.
Enter the FRITZ!Box IP address in the address bar. By default, this is usually fritz.box or 192.168.178.1. If neither of these works, consult your FRITZ!Box manual or the documentation provided by your internet service provider (ISP).
Enter your FRITZ!Box password when prompted. If you haven't changed it, the default password might be printed on a sticker on the bottom of your FRITZ!Box. If you have forgotten your password, you will need to perform a factory reset to regain access, so make sure to recover it if possible.

2. Navigating to the Telephone Settings

Once logged into the FRITZ!Box interface, you need to locate the telephone settings:

In the FRITZ!Box menu on the left-hand side, click on "Telefonie" (Telephony).
Under "Telefonie," click on "Eigene Rufnummern" (Own Telephone Numbers). This section manages your configured telephone numbers.

3. Selecting and Editing Your Telephone Number

Now you need to select the specific telephone number for which you want to disable HD telephony:

In the "Eigene Rufnummern" list, you will see the telephone numbers configured on your FRITZ!Box. Click on the "Bearbeiten" (Edit) button next to the telephone number you want to modify. The button typically looks like a pencil icon.

4. Accessing Advanced Settings

The relevant setting for disabling HD telephony is often found within the advanced settings for the selected telephone number:

After clicking on the "Bearbeiten" button for the desired phone number, a new page will load with various settings related to that number. Look for a section labeled "Erweiterte Einstellungen" (Advanced Settings) or a similarly worded option. You may need to scroll down the page to find it.
If "Erweiterte Einstellungen" is not immediately visible, there might be a link or button labeled "Erweiterte Ansicht" (Advanced View) or similar. Click this to reveal the full set of configuration options.

5. Disabling HD Telephony

This is the crucial step. The exact wording may vary slightly depending on your FRITZ!Box firmware version, but look for an option related to HD voice or codec prioritization:

Within the "Erweiterte Einstellungen" section, locate an option that mentions "HD-Telefonie" (HD Telephony), "Sprachübertragung bevorzugen" (Prefer Speech Transmission), "Codec-Priorisierung" (Codec Prioritization), or something similar.
Uncheck the box next to this option. This will typically disable the use of HD codecs for calls made or received on this telephone number. The setting might also present a dropdown menu where you can select a specific codec to use (e.g., G.711 instead of G.722 which is an HD codec). In that case, select a non-HD codec.

6. Saving Your Changes

After disabling the HD telephony option, it's essential to save your changes:

Scroll to the bottom of the page and click on the "Übernehmen" (Apply) or "OK" button to save your modifications.
The FRITZ!Box may take a few moments to apply the new settings. You might briefly lose your internet connection during this process.

7. Testing Your Changes

To confirm that HD telephony has been successfully disabled, make a test call:

Make a call using the telephone number you modified.
Pay attention to the audio quality. If HD telephony is disabled, the call should sound like a standard telephone call, potentially with slightly lower fidelity.
You can also check the FRITZ!Box event log ("System" -> "Ereignisse") after the call. Look for entries related to the codecs used during the call. If HD is disabled, you should see that a non-HD codec (like G.711) was used.

Considerations and Troubleshooting

Multiple Telephone Numbers: If you have multiple telephone numbers configured on your FRITZ!Box and want to disable HD telephony for all of them, you will need to repeat the above steps for each number individually.
Firmware Updates: AVM frequently releases firmware updates for FRITZ!Box routers. While these updates often improve performance and security, they can also change the location of settings within the interface. If you cannot find the HD telephony option as described above, consult the FRITZ!Box help documentation or search the AVM website for updated instructions.
FRITZ!Fon Settings: While the primary control is within the FRITZ!Box interface, some FRITZ!Fon models might have individual settings that affect audio quality. Check the FRITZ!Fon's menu for options related to "Voice Quality" or "Audio Codecs." These settings generally defer to the FRITZ!Box configuration, but it's worth verifying.
Network Issues: Persistent call quality issues despite disabling HD telephony may indicate problems with your internet connection, your ISP, or your telephone line. Contact your ISP or a qualified technician for assistance.
Re-enabling HD Telephony: If you decide to re-enable HD telephony in the future, simply follow the same steps outlined above and check the box next to the "HD-Telefonie" or similar option that you previously unchecked.

By following these steps, you can effectively disable HD telephony on your FRITZ!Fon C5 via the FRITZ!Box interface. This can be a useful troubleshooting step or a necessary adjustment for compatibility reasons. Remember to document any changes you make to your FRITZ!Box settings so you can easily revert them if needed.