# P-Series

# Codec optimization

To Improve Audio Quality, specific Codecs should be selected:

<p class="callout info">Tested on P560</p>

### Code Priority

1. Opus
2. G722
3. µ-Law

### Set Codec for Trunk

1\. Go to Trunk Settings

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/scaled-1680-/71Nimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/71Nimage.png)

2\. Go to Tab *Advanced* and change Codecs

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/scaled-1680-/teNimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/teNimage.png)

### Set Codec in SIP Settings

1\. Go to SIP Settings

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/scaled-1680-/WWzimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/WWzimage.png)

2\. Go to Tab *Codec*

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/scaled-1680-/gP7image.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-07/gP7image.png)

# Remote Registration

<p class="callout info">All Registration Attempts that are not initiated by the PBX itself, count as *Remote Registration*</p>

1. Log into PBX WebUI
2. Go to *Extensions and Trunk* - *Extensions*
3. Edit your desired Extension
4. Go to Extension Information. There you'll find *Registration Name* and *Registration Password*. You'll need both including your Extension/Called ID itself.
5. Still in the Extension Settings, go to *Security*
6. At *SIP Security* enable *Allow Remote Registration*

After that, you need to Configure your Phone Device. Use default Port 5060 for SIP and your PBX's IP.

For Username and Password, use *Registration Name* (Username) and *Registration Password* (Password)

# Device Registration

# Linkvil W-Series

1. Go to *Line* - *SIP*

<table border="1" id="bkmrk-setting-value-userna" style="border-collapse: collapse; width: 100%;"><colgroup><col style="width: 50.053%;"></col><col style="width: 50.053%;"></col></colgroup><tbody><tr><td>Setting</td><td>Value</td></tr><tr><td>Username</td><td>Extension</td></tr><tr><td>Display Name</td><td>Display Name of the Extension</td></tr><tr><td>Authentication User</td><td>Registration Name</td></tr><tr><td>Authentication Password</td><td>Registration Password</td></tr><tr><td>Server Name</td><td>Display Name of the Extension</td></tr></tbody></table>