# How can I use both Doodle and Quectel together?

Source: https://forum.modalai.com/topic/2371/how-can-i-use-both-doodle-and-quectel-together
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2
Posted: 2023-07-04 05:30:27 UTC by 황인호
Replies: 1 · Views: 525

## 황인호 · 2023-07-04 05:30:27 UTC

![1.PNG](https://forum.modalai.com/assets/uploads/files/1688448612216-1.png) 

I'm trying to configure the modem of VOXL2. 
After configuring Doodle, when I try to configure Quectel, the IP settings of Doodle get erased. 
Similarly, if I configure Quectel first and then Doodle, the IP settings of Quectel get erased. 
As a result, I'm unable to configure both of them. 
How can I use both Doodle and Quectel together?

## Reply by tom (ModalAI staff) · 2023-07-05 17:18:20 UTC

@황인호 It isn't required to use `voxl-modem` to interact with the modems if you'd like to do a custom config. 

In your case, I'd recommend using `voxl-configure-modem` with the quectel option to handle Quectel bringup and then creating a custom script / service file (or modifying the existing one) to handle doodle bringup. 

Although doodle bringup is very basic, if you follow the code path here in the startup script: https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-modem/-/blob/master/scripts/voxl-modem-start#L99

it monitors the `eth0` network interface and if the IP address isn't what is specified in the config file then it assigns said IP address. This could be broken out into a different script