# OAI + LimeSDR Error

**URL:** <https://discourse.myriadrf.org/t/oai-limesdr-error/3168>\
**Category:** LimeSDR\
**Created:** [14 August 2018 12:52 UTC](https://discourse.myriadrf.org/t/oai-limesdr-error/3168 "2018-08-14T12:52:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![arashesfahany](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/arashesfahany/32/2131_2.png) [@arashesfahany](https://discourse.myriadrf.org/u/arashesfahany)\
**Post date:** [14 August 2018 12:52 UTC](https://discourse.myriadrf.org/t/oai-limesdr-error/3168/1 "2018-08-14T12:52:23Z")

</div>

Hi guys,

I’m trying to use the OAI code with the LimeSDR-USB board. The eNB works well with the USRP.  
When I use the LimeSDR instead of the USRP, I get some errors. It seems that the main problem is with the

> rfdevice timing drift of some samples.

Another error is:

> “[S1AP][E][s1ap\_eNB\_task] Failed to find ue contextassociated with eNB ue s1ap id: 420141”

It’s noteworthy to point that the LimeQuickTest has run successfully.

Here is the output log file: [http://www.mediafire.com/file/qg6cws5mxb3a302/Output.txt/file](http://www.mediafire.com/file/qg6cws5mxb3a302/Output.txt/file)

Here is the WireShark output for the connection between eNB and the core: [http://www.mediafire.com/file/ieep7miweelabpx/WireShark\_Output.pcapng/file](http://www.mediafire.com/file/ieep7miweelabpx/WireShark_Output.pcapng/file)

Here is the eNB configuration file: [http://www.mediafire.com/file/hlj66q02cx0sk9x/eNB.conf/file](http://www.mediafire.com/file/hlj66q02cx0sk9x/eNB.conf/file)

Here is the LimeSDR configuration file:[http://www.mediafire.com/file/hlj66q02cx0sk9x/eNB.conf/file](http://www.mediafire.com/file/hlj66q02cx0sk9x/eNB.conf/file)

Any kind of help would be thoroughly appreciated…