# PROBLEM T.38 and FAX PJSIP - 488 NOT ACCEPT HERE

**URL:** <https://community.asterisk.org/t/problem-t-38-and-fax-pjsip-488-not-accept-here/73866>\
**Category:** Asterisk Support\
**Created:** [March 13, 2018, 9:43pm UTC](https://community.asterisk.org/t/problem-t-38-and-fax-pjsip-488-not-accept-here/73866 "2018-03-13T21:43:34Z")\
**Posts on this page:** 3\
**Page:** 2

<div class="post-metadata">

**Author:** ![thiagocnet](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/thiagocnet/32/2508_2.png) [@thiagocnet](https://community.asterisk.org/u/thiagocnet)\
**Post date:** [March 22, 2018, 4:11pm UTC](https://community.asterisk.org/t/problem-t-38-and-fax-pjsip-488-not-accept-here/73866/21 "2018-03-22T16:11:59Z")

</div>

OK, thanks for you help.

---

<div class="post-metadata">

**Author:** ![afzoun](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/afzoun/32/3633_2.png) [@afzoun](https://community.asterisk.org/u/afzoun)\
**Post date:** [September 26, 2018, 11:44am UTC](https://community.asterisk.org/t/problem-t-38-and-fax-pjsip-488-not-accept-here/73866/22 "2018-09-26T11:44:31Z")

</div>

Hi  
I’m having the same issue, during sending fax. Although if I use my asterisk switch directly, it’s working fine, but if I use ARI, I get 488 error… And I know we can’t have both fax stream and audio stream, and I get a reinvite changing stream, but it doesn’t work… how can I fix this?  
I tried to set t38passthrough variable of channel to 1, but it didn’t work.

---

<div class="post-metadata">

**Author:** ![jcolp](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/jcolp/32/8848_2.png) [@jcolp](https://community.asterisk.org/u/jcolp)\
**Post date:** [September 26, 2018, 12:50pm UTC](https://community.asterisk.org/t/problem-t-38-and-fax-pjsip-488-not-accept-here/73866/23 "2018-09-26T12:50:35Z")

</div>

I’d suggest starting a new thread instead of hijacking this one. As well you’ll need to provide the actual configuration, SIP trace, console output, and information about what exactly your ARI application is doing.

[Previous page](https://community.asterisk.org/t/problem-t-38-and-fax-pjsip-488-not-accept-here/73866.md?page=1)