> For the complete documentation index, see [llms.txt](https://support.portsip.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/voip-innovations-sip-trunk/configuring-voip-innovations-ip-authentication-trunk.md).
# Configuring VoIP Innovations IP Authentication Trunk
Before proceeding with the next steps, you need to purchase a DID on the [VoIP Innovations](/portsip-communications-solution/configuring-sip-trunks/voip-innovations-sip-trunk/purchase-a-did-on-voip-innovations-platform.md) platform.
***
### Configure a VoIP Innovations IP Authentication Trunk in PortSIP PBX
Before proceeding, ensure that you have **purchased at least one DID** on the VoIP Innovations platform.
VoIP Innovations must be configured as an **IP-Based Trunk** at the **PortSIP PBX System Administrator** level.\
Once configured, the trunk can be **shared with one or more tenants**, and DIDs can be assigned through a **DID Pool**.
***
#### Step 1: Create the IP-Based Trunk
1. Sign in to the **PortSIP PBX Web Portal** as a **System Administrator**.
2. From the left-hand menu, navigate to:\
**Call Manager > Trunks**
3. Click **Add** to open the trunk type menu.
4. Select **IP Based Trunk**.
***
#### Step 2: Configure Basic Trunk Settings
1. Enter the trunk details:
* **Name**\
Enter a friendly name for the trunk (for example, *VoIP Innovations Trunk*).
* **Brand**\
Select **VoIP Innovations**.
2. Click **Next**.
***
#### Step 3: Configure Trunk Options
1. Review the trunk options and adjust settings as needed.
2. Configure the following field if required:
* **Max Concurrent Calls**\
Defines the maximum number of simultaneous calls PortSIP PBX can establish using this trunk.\
Set this value according to your capacity planning and service agreement with VoIP Innovations.
> **Best Practice**\
> Keep all other options at their default values unless you have specific requirements provided by VoIP Innovations.
3. Click **Next**.
***
#### Step 4: Assign the Trunk to Tenants and Configure the DID Pool
1. Select one or more **tenants** to grant access to this trunk.
2. Configure the **DID Pool** to assign VoIP Innovations numbers to tenants.
> **Important**
>
> * Each DID can be assigned to **only one tenant**.
> * A tenant can use **only the DIDs in its assigned DID Pool** to:
> * Create inbound rules
> * Create outbound rules
> * Configure outbound caller ID for extensions
**DID Pool Format Examples**
The DID Pool can include:
* A single number
```
16468097065
```
* Multiple individual numbers
```
16468097065;16468097066
```
* A range of numbers
```
16468097065-16468097066
```
* A combination of ranges and individual numbers
```
16468097065-16468097066;16468097070-16468097080
```
3. Click **OK** to save the configuration.
***
#### Expected Result
* The VoIP Innovations trunk is created successfully.
* In the trunk list, the trunk status displays as **Online.**\
(for **IP-Based Trunks**, the status always shows *Online*).
***
### Next Steps
The Vonage IP Authentication Trunk is now ready for use.
You can proceed to:
* Configure outbound call routing rules
* Configure inbound DID routing
* Assign outbound caller IDs
Refer to the next guide section: [Configuring inbound and outbound calls](/portsip-communications-solution/configuring-sip-trunks/voip-innovations-sip-trunk/configuring-outbound-and-inbound-calls.md).
---
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