Unable to Send External Messages 3cx and Telnyx when we initiate the conversation

[Rob Fabian]

Hello,

We are unable to send 3cx messages via SMS to external numbers if we initiate the conversation. If they text us first, we can reply back and forth. This was not an issue until we upgraded to version 18.6 (Build 908). Please let me know if there is anything I can do. I tried to check the activity log and enabled verbose logging but I don't see anything regarding my texts.

Thanks!

 

[JohnS_3CX]

We informed everyone back in September to reconfigure their SMS in order to avoid this: https://www.3cx.com/blog/news/messaging-updates-u6/

Anyone who had not done so prior to update 6, will notice that it will stop working as soon as they upgrade.

 

[Rob Fabian]

Hi John,

As far as I can tell, it looks to be set up correctly. Is there anything in particular you would like to see to verify our setup?

Thanks!

 

[JohnS_3CX]

The only thing I would suggest is to read the guide, and carefully verify all the details one by one just in case something was missing.

You can remove it entirely and set it up from scratch just to be sure. But there is also an important note at the top of the SMS guide, this might be why you cannot initiate conversations.

 

[GeorgeP_3CX]

Hi @Rob Fabian,

In addition to what my colleague already said, ensure that the DID in the SIP Trunk configuration is set up in E164 format, and when initiating a conversation, you type the number that you want to send an SMS to in E164 format.