# BC127 - automatically start an A2DP source stream

**URL:** <https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789>\
**Category:** WiFi and Bluetooth Modules\
**Created:** [February 6, 2021, 8:37pm UTC](https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789 "2021-02-06T20:37:53Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![wtn90125](https://avatars.discourse-cdn.com/v4/letter/w/7ab992/32.png) [@wtn90125](https://forum.sierrawireless.com/u/wtn90125)\
**Post date:** [February 6, 2021, 8:37pm UTC](https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789/1 "2021-02-06T20:37:53Z")

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Hello,  
I’m trying to get a BC127 module configured as an A2DP source to start streaming as soon as the paired headset connects. Everything is working ok except I have to press a button on the headset to start streaming, I would like for this to happen automatically on the source side so that the user doesn’t have to press a button for it to work. Is there a command I can send to the BC127 via the serial port to start streaming?

My configuration settings are stock plus:  
PROFILES=1 0 0 1 2 3 2 1 0 0 1 0  
AUTOCONN=1  
COD=20041C

Using Melody Audio V7.3  
Build: 1544637564

Thanks,  
Terry

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**Author:** ![mlw](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/mlw/32/3706_2.png) [@mlw](https://forum.sierrawireless.com/u/mlw)\
**Post date:** [February 8, 2021, 4:41pm UTC](https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789/3 "2021-02-08T16:41:07Z")

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@wtn90125

Pretty sure you cannot do this and you have to command the unit to start streaming from one end or the other.

Regards

Matt

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**Author:** ![wtn90125](https://avatars.discourse-cdn.com/v4/letter/w/7ab992/32.png) [@wtn90125](https://forum.sierrawireless.com/u/wtn90125)\
**Post date:** [February 8, 2021, 5:56pm UTC](https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789/4 "2021-02-08T17:56:51Z")

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Thanks for the response. It works fine if I start the stream from the headphones - the receiving unit - but I cannot find a way to start the stream from the sending unit. Play (PIO2) does not work. Looking for a command I can issue to the BC127 module (or sequence of IO pin actions) that will start the stream without requiring the user to press a play button (plus some devices may not even have a play button).

Terry

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**Author:** ![tass2001](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/tass2001/32/3830_2.png) [@tass2001](https://forum.sierrawireless.com/u/tass2001)\
**Post date:** [March 17, 2021, 8:21pm UTC](https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789/5 "2021-03-17T20:21:31Z")

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Have you considered the MUSIC command in Melody?

```auto
MUSIC 11 PLAY

```

-Ted

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<div class="post-metadata">

**Author:** ![wtn90125](https://avatars.discourse-cdn.com/v4/letter/w/7ab992/32.png) [@wtn90125](https://forum.sierrawireless.com/u/wtn90125)\
**Post date:** [March 18, 2021, 2:46am UTC](https://forum.sierrawireless.com/t/bc127-automatically-start-an-a2dp-source-stream/22789/6 "2021-03-18T02:46:10Z")

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One would think that would work, but the command simply reports OK and does nothing. I have found no way at all to start and stop the stream on the sending device, only pressing the play/pause on the receiving device can start and stop the stream, and it starts up in paused mode.