# Posting Bids from Ringba to CallGrid using RTB

> This guide will walk you through setting up a Ringtree Target in your Ringba to post RTB requests to CallGrid. Approximate setup time is 2 minutes.

Source: https://callgrid.com/knowledge-base/posting-bids-from-ringba-to-callgrid-using-rtb
Last updated: 2025-09-26
Topics: Integrations, Real Time Bidding

This guide will walk you through setting up a Ringtree Target in your Ringba to post bid requests to CallGrid. Approximate setup time is 2 minutes.

First, open your Ringba dashboard and navigate to the Targets->RingTree Targets page.

Then, create a new Ring Tree target and give the target a name and select a buyer from the buyer dropdown.

Make sure **Dynamic Number / SIP** is turned on.

![](https://callgrid.com/api/media/file/SIP.png)

Set any hours, caps, and concurrency settings that you might need.

Go to Revenue Settings and make sure Conversion Settings is set to **Override** and Revenue Type is **Dynamic**

![](https://callgrid.com/api/media/file/RevSettings.png)

If your buyer has asked for conversions on postbacks then select Convert On **Postback / Webhook.**

![](https://callgrid.com/api/media/file/PotbackWebhook.png)

> **Warning:** _If you select this option you will need to go to Integrations->Webhooks in the sidebar and click Create Webhook, give the webhook a name and save it. Then send the webhook url to your buyer.  Instructions to setup the Webhook in Ringba can be found here: _[Receiving Conversion Events from CallGrid in Ringba](https://callgrid.com/knowledge-base/receiving-conversion-events-from-callgrid-in-ringba)

If your buyer has asked for conversions on Call Duration then select Convert On **Call Length.** Set the Start Call Length On **Connect and the **Conversion call length value** **to** Dynamic.**

![Dynamic Duration](https://callgrid.com/api/media/file/DynamicDuration.png)

Go to **Request Settings** and make sure you select **Basic.**

![](https://callgrid.com/api/media/file/Basic.png)

Enter the CallGrid URL **that you receive from your buyer** in the **URL Field.**

> **Warning:** _Pro Tip: Pass additional custom tags to your buyer by setting a url param ie &CustomTag= and using the Token button. Your buyer can receive the custom tags so long as the Tag exists on the Tags page in CallGrid._

Upon entering the URL  the **Test Token Values** will appear.

Enter "**+15551234567**" into the tag:InboundNumber:Number Test Token Field.

![](https://callgrid.com/api/media/file/TestTokenValues.png)

_This is a special phone number that will cause a successful bid to be returned so that you can easily map the fields._

If there are additional Required Test Token fields enter **any value **for those fields.

Click the **Run Request** button.

![](https://callgrid.com/api/media/file/AcceptanceMapping.png)

Select "**code**" from the Acceptance Parsing dropdown and enter "1000" into the field.

Select "**dynamicBid**" from the Dynamic Bid Parsing dropdown.

Select "**dynamicSipAddress**" from the Dynamic Number dropdpown.

Select "**dynamicDuration**" from the Dynamic Duration Parsing  dropdown.

Now you can save by clicking the **Create Ringtree Target** button.