# Serial Port with echo
**URL:** https://forums.digi.com/t/serial-port-with-echo/4418
**Category:** NET+OS
**Tags:** netos
**Created:** [February 5, 2013, 9:50am UTC](https://forums.digi.com/t/serial-port-with-echo/4418 "2013-02-05T09:50:08Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@mfranz](https://forums.digi.com/u/mfranz)
#### Post date: [February 5, 2013, 9:50am UTC](https://forums.digi.com/t/serial-port-with-echo/4418/1 "2013-02-05T09:50:08Z")
I’m using Digi Connect ME9210 and working with this module through serial interface.
My problem is that even if on my apllication I disabled the echo, I see that what I’m writing on serial port comes back from Digi serial port, how can I disable it?
Thanks
---
### Author:  [@Campbell](https://forums.digi.com/u/Campbell)
#### Post date: [February 11, 2013, 7:51pm UTC](https://forums.digi.com/t/serial-port-with-echo/4418/2 "2013-02-11T19:51:51Z")
Hello assuming you are running NET+OS, by defaul application is set to output dialog out to Port1, you can set this option to FALSE inside the BSP directory file bss\_sys.h. This is set to true by default. Please see below:
/_ad_
- Set this to TRUE to run the dialog code during startup.
-
- @since 6.2
- @external
- @category BSP:BSP\_Configuration
-
- @note when @link BSP\_FAST\_BOOT\_OPTION is TRUE,
- this setting will be set to FALSE.
_ad_/
#ifndef BSP\_ENABLE\_DIALOG
#define BSP\_ENABLE\_DIALOG TRUE
#endif
/\*
- BSP\_STDIO\_PORT determines which serial port stdin, stdout, and stderr should be redirected to.
- It should be set to the device name of the port or NULL.
-
- @external
- @category BSP:BSP\_Configuration
- @since 7.1
\*/
#define BSP\_STDIO\_PORT “/com/0”
/\*
- BSP\_DIALOG\_PORT determines whether or not the initialization code will prompt for configuration
- parameters. It should be set to a string that contains the serial port to prompt with. If it
- is not set, or if it contains an invalid port, then the initialization code will not prompt for
- configuration parameters.
-
- @external
- @category BSP:BSP\_Configuration
- @since 7.1
\*/
#define BSP\_DIALOG\_PORT “/com/0”