> 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/configuration-details/configuration-by-use-case/remote-workers/configuration-files-for-remote-office-workers.md).

# Configuration Files for Remote Office/Workers

## Introduction

ProSBC Configuration Files for Remote Office/Workers Scenario Tutorial provides you with a scenario-based approach to configuring ProSBC systems, using sample configuration files. Complete general installation configuration steps, before you begin configuring your specific application.

### Prerequisites

ProSBC devices must be installed as described in their respective installation guides.

### Typical Remote Office/Workers Sample without NAT

<figure><img src="https://docs.telcobridges.com/w/images/thumb/9/99/ProSBC_Remote_Workers_sample_config.png/800px-ProSBC_Remote_Workers_sample_config.png" alt="Without NAT: remote workers and a remote office cross the internet straight to the ProSBC WAN_00 interface, with LAN_00 facing the enterprise IP-PBX and fax server."><figcaption></figcaption></figure>

### Typical Remote Office/Workers Sample with NAT

<figure><img src="https://docs.telcobridges.com/w/images/thumb/7/7c/ProSBC_Remote_workers_sample_config_NAT.png/800px-ProSBC_Remote_workers_sample_config_NAT.png" alt="With NAT: the same topology adds a NAT device between the internet and the ProSBC WAN_00 interface, ahead of the enterprise IP-PBX and fax server on LAN_00."><figcaption></figcaption></figure>

### Modifying configuration file

You can download sample configuration for Remote Office/Workers scenario from below;

[Remote Office/Workers Sample Configuration without NAT](https://docs.telcobridges.com/w/images/7/7f/Rmt_main_config.json)\
[Remote Office/Workers Sample Configuration with NAT](https://docs.telcobridges.com/w/images/e/e9/Rmt_main_config_nat.json)

* Open the json file with a text editor
* Replace following parameters in the file
  * \[tbsbc] with the hostname that you gave on installation stage
  * \[WAN\_00\_IP] and \[LAN\_00\_IP] with IP addresses for WAN and LAN
  * \[WAN\_00\_Subnet] and \[LAN\_00\_Subnet] with IP subnets for both networks (format: 255.x.x.x)
  * \[WAN\_00\_Gateway] and \[LAN\_00\_Gateway] with Gateway IP addresses
  * \[WAN\_00] and \[LAN\_00] with currently configured IP interfaces (for example voip0 and voip1)
  * \[Registrar\_Domain\_Name] with Registrar Domain (IPPBX Domain - must be IP address in version 3.0)
  * \[All Registrar\_IP] with Registrar IP Address (IPPBX IP Address)
* If you downloaded Remote Office/Workers Sample Configuration with NAT file please replace the following parameter too
  * \[NAT\_IP\_Address] with your External IP (Public IP of the NAT device)
* Save the file

### Uploading and activating the sample configuration

* You need to use an SFTP client to upload the configuration file to ProSBC
* After upload the file using the following commands from CLI
* For Remote Office/Workers Sample Configuration without NAT (Change user/password for web interface)

```
 tbconfig -u root -p root -C /configurations Rmt_main_config.json name="main_config"
 tbconfig -u root -p root -U /systems/system_1/target_configuration="main_config"
```

* For Remote Office/Workers Sample Configuration with NAT

```
 tbconfig -u root -p root -C /configurations Rmt_main_config_nat.json name="main_config"
 tbconfig -u root -p root -U /systems/system_1/target_configuration="main_config"
```


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