ConceptUsers in the system may own one or more SIP devices. These devices can be configured to ring together or separately according to the User's Answering Rules. In order to link a SIP device to a User's extension, you must add a SIP Phone to that User's profile.Configuring the User’s SIP PhoneWhen a User is created, the system will automatically create a SIP device that matches the extension number you specified when the User was created. You can see the device created by clicking on the User’s name and selecting the ‘Phones’ tab.The postfix m (e.g. 1001m) is reserved for use by ReachUC and is added automatically when logging in to the ReachUC Mobility app on mobile devices. Using the 'm' suffix for a non-ReachUC device may cause issues.Auto-Provisioning a SIP DeviceThe SkySwitch system is able to auto-provision supported SIP devices. In order for this process to work, you must do two things: (1) configure the SIP device to use the provisioning server, and; (2) associate the MAC address of the SIP device with the User’s SIP Phone extensions.To accomplish Step 1, refer to the article entitled Add Provisioning Server URL onto a SIP Device.To accomplish Step 2, go back into the SkySwitch portal and browse to the phones page of the User. Then, click on the ‘Edit’ icon for the SIP Device that you wish to configure.This will display a form as shown in the image below. Select the model of the phone you wish to provision from the list of supported devices.After you select the model of your SIP Device, the form will prompt you to enter the MAC Address of the SIP Device, and the Line Number that you wish to configure on the phone. Complete the form using the following table as a reference.Manually Provisioning a SIP DeviceIn case you do not have a SIP Device that is supported by the provisioning server, you will have to manually provision any SIP compatible device or softphone. The settings shown under ‘Manual or Softphone’ in the model selector must be manually entered into your SIP device.Note: When the device is manually provisioned, it will not show on NDP and the inventory page of the domain.Note: Please add a device first by clicking on the Add Phone button, click on the Add button without choosing a device model/brand, then edit the device to be able to see and choose the Manual or Softphone option and see the related settings/credentials.The example image below shows the configuration screen for the free Counterpath X-Lite softphone. You can download the X-Lite softphone from http://www.counterpath.com/x-lite-download.html  or use any other SIP-compatible softphone that supports the Outbound Proxy setting.The IP Address in the image below is an example and is not to be used in a real setup. If you don't know how to locate your primary and secondary nodes via SRV record lookup, please visit our Priorities in SRV article for further details. It is important to be aware that the SkySwitch system requires the use of an Outbound Proxy (sometimes this is just called a Proxy). Therefore, you cannot use a SIP Device that does not support this standard SIP parameter.