> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/accessing-codec-and-tone-detection-profiles-and-validating-settings.md).

# Accessing Codec and Tone Detection Profiles and Validating Settings

#### ***Applies to version(s): v2.8.***

You must access your system's default sound codec and tone detection profiles, to validate whether or not they are correctly set.

To do so:

1- Click **Profiles** in the navigation panel

![SipProfile 0](https://docs.telcobridges.com/w/images/e/e8/SipProfile_0.png)

2- Select the default configuration (or the custom configuration you will be using)

![SipProfile 1](https://docs.telcobridges.com/w/images/c/cd/SipProfile_1.png)

3- Click SIP to access the SIP profiles.

![SipProfile 2](https://docs.telcobridges.com/w/images/4/48/SipProfile_2.png)

4- Validate the configuration:

* Select an appropriate **DTMF relay scheme** from the list

![SipProfile 3](https://docs.telcobridges.com/w/images/9/9f/SipProfile_3.png)

4- Click **"<<"** to add a scheme

* Click **Save**

![SipProfile 4](https://docs.telcobridges.com/w/images/b/b9/SipProfile_4.png)

***IMPORTANT!*** The configuration will not be saved if the text box designed to contain the session definition protocol (SDP) is left empty. The SDP must be written as directed in the [session description protocol page.](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/profile-sdp-description/README.md)


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