# Bx3105 ad2p

**URL:** <https://forum.sierrawireless.com/t/bx3105-ad2p/26324>\
**Category:** Uncategorized\
**Created:** [February 21, 2022, 4:06pm UTC](https://forum.sierrawireless.com/t/bx3105-ad2p/26324 "2022-02-21T16:06:16Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![b.delporte](https://avatars.discourse-cdn.com/v4/letter/b/8baadc/32.png) [@b.delporte](https://forum.sierrawireless.com/u/b.delporte)\
**Post date:** [February 21, 2022, 4:06pm UTC](https://forum.sierrawireless.com/t/bx3105-ad2p/26324/1 "2022-02-21T16:06:16Z")

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I try to connect two BX3105 in AD2P mode : I send this command in each module to initialise it : AT+SRBTSYSTEM=2  
AT+SRBTCSECPARAMS=1  
AT+SRBTCPROFILES=2 (A2DP)  
AT+SRBTSTATE=1,2  
AT+KI2SCFG=0,1,0,2,0,26,18,32,33

after i connect module by AT+SRA2DPCFG=cc:93:4a:08:73:c0 and start a2DP AT+SRA2DPCNX=1  
but the answer of module cc:93:4a:08:73:c0 is +SRBTCFG: 1,0,“cc:93:4a:08:73:c0”,A2DP  
why the status of A2P is 0 in the answer ?

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**Author:** ![Donald](https://avatars.discourse-cdn.com/v4/letter/d/ac8455/32.png) [@Donald](https://forum.sierrawireless.com/u/Donald)\
**Post date:** [February 22, 2022, 12:39am UTC](https://forum.sierrawireless.com/t/bx3105-ad2p/26324/2 "2022-02-22T00:39:35Z")

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Hi b.delporte ,

Which BX3105 firmware version are you using? If you are not in the latest firmware, please download the latest one and retry.  
[BX310x Firmware](https://source.sierrawireless.com/resources/airprime/software/bx310x-firmware/#sthash.6KwBAQzJ.dpbs)

Please share the full logs on the two BX3105 with me.

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**Author:** ![b.delporte](https://avatars.discourse-cdn.com/v4/letter/b/8baadc/32.png) [@b.delporte](https://forum.sierrawireless.com/u/b.delporte)\
**Post date:** [February 22, 2022, 7:45am UTC](https://forum.sierrawireless.com/t/bx3105-ad2p/26324/3 "2022-02-22T07:45:50Z")

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Hi Donald,

First module is Bx310x Demo board → module A

Second module it my own card with STM32L431 and BX3105 connected with UART and I2S → module B

Two modules have software:

Sierra Wireless Copyright 2018

BX310x.2.7.3

READY

1-module A initialization:

AT+SRBTSYSTEM=2

OK

AT+SRBTCSECPARAMS=1

OK

AT+SRBTCPROFILES=2

OK

AT+SRBTSTATE=1,2

OK

AT+KI2SCFG=0,1,0,2,0,26,18,32,33

OK

2-module B initialization:

AT+SRBTSYSTEM=2

OK

AT+SRBTCSECPARAMS=1

OK

AT+SRBTCPROFILES=2

OK

AT+SRBTSTATE=1,2

OK

AT+KI2SCFG=0,1,0,2,0,26,18,32,33

OK

3- module A next command:

AT+SRBTINQ=5,1,0

+SRBTINQ: “cc:93:4a:08:73:c0”,240414,-42,“Merc\_cc934a0873bf”

AT+SRA2DPCFG=cc:93:4a:08:73:c0

+SRBTCFG: 1,0,“cc:93:4a:08:73:c0”,A2DP

OK

No trace on module B

AT+SRA2DPCNX=1

OK

+SRBTCFG: 1,0,“cc:93:4a:08:73:c0”,A2DP

No trace on module B

Durring the first connexion I have answerd at +SRBTCSECNUMCMP on each module

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**Author:** ![Donald](https://avatars.discourse-cdn.com/v4/letter/d/ac8455/32.png) [@Donald](https://forum.sierrawireless.com/u/Donald)\
**Post date:** [March 1, 2022, 10:01am UTC](https://forum.sierrawireless.com/t/bx3105-ad2p/26324/4 "2022-03-01T10:01:28Z")

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Hi b.delporte ,

Are you able to reproduce the issue 100%? How many devices did you observe this issue? If It’s just only one, could you please retry on another device?