Generic provider - MMS problems but SMS works

[Callinectes]

We have been having great success testing BulkVS as a voice provider. We even have SMS working very well. We are having no luck with getting MMS messages to come through, however. Can someone from 3CX support (or someone knowledgeable with regard to how MMS works in 3CX) please look at what their support says was sent in a test message that was never received by a recipient that is able to receive SMS messages with no problems?

According to BulkVS support, this is what was sent (note that some information has been redacted/obscured with Xs):
"
Time: 2023-XX-XX 10:58:24
From: 17XXXXXXXXX
To: 19XXXXXXXXX
{"data": {"event_type": "message.received","id": "32a0af3c-7110-4466-8798-4a07697c1f89","type": "MMS","payload": {"received_at": "2023-XX-XXT14:58:24+00:00","from": {"phone_number":
"+1XXXXXXXXX"},"to": [{"phone_number": "+1XXXXXXXXX"}],"text": ""},"media": [{"url": "https://s3.amazonaws.com/iqntmmsXX/IR8yWCMzO4XXXXXXXXXX.smil"},{"url":
"https://s3.amazonaws.com/iqntmmsXX/H7FJ88zP6zXXXXXXXXXX.jpg"},{"url": "https://s3.amazonaws.com/iqntmmsXX/YAShwsCFB6XXXXXXXXXX.txt"}]}}
"

I am happy to ask whatever additional questions are relevant to see if we can get this resolved. Thanks in advance!

 

[Callinectes]

In your BulkVS account what are you using for digit delivery? I am seeing this issue with it set to 11DIGITS and want to determine if it's related.

I am almost positive we are using 10 digit delivery, but doesn’t that only apply to voice?

 

[Guillaume Bourgeois]

I am almost positive we are using 10 digit delivery, but doesn’t that only apply to voice?

You need to make sure you are set to +E164 for this to work.
Make sure your provider follows this format for SMS. (CID and DID).

 

[Callinectes]

You need to make sure you are set to +E164 for this to work.
Make sure your provider follows this format for SMS. (CID and DID).

Calls work fine and SMS works fine (where MMS does not) even though our BulkVS account is set to 10 digit delivery. And our Twilio account is set up almost identically on this same 3CX system and their SMS and MMS work fine.

 

[Guillaume Bourgeois]

So the payload send by BulkVS is not the right format for MMS..

 

[Callinectes]

So the payload send by BulkVS is not the right format for MMS..

Do you have any idea what the correct format/payload would be so that I can share it and get them to adjust? They are interested in getting it working and are a great provider otherwise. Is there a resource with this information?

 

[Guillaume Bourgeois]

Do you have any idea what the correct format/payload would be so that I can share it and get them to adjust? They are interested in getting it working and are a great provider otherwise. Is there a resource with this information?

Are you saying it works with Twilio?
So, configure Twilio to send SMS/MMS to a Webhook tester
https://webhook.site/
Get a unique URL where you should send your Twilio tests.

Keep the page open and you will get everything you need.
Send an MMS to your Twilio number, see the result on Webhook page

 

[Guillaume Bourgeois]

Documentation ;
https://www.3cx.com/docs/supported-sip-trunk-requirements/#h.lvrsfymbtlb8

 

[Callinectes]

Are you saying it works with Twilio?
So, configure Twilio to send SMS/MMS to a Webhook tester
https://webhook.site/
Get a unique URL where you should send your Twilio tests.

Keep the page open and you will get everything you need.
Send an MMS to your Twilio number, see the result on Webhook page

Thank you, that is an excellent suggestion. I have already used it to collect the information and submit it to their support team. Hopefully they can figure it out and get it working.

 

[Callinectes]

Documentation ;
https://www.3cx.com/docs/supported-sip-trunk-requirements/#h.lvrsfymbtlb8

Thank you again for the suggestion and link to 3CX MMS documentation. Through working with BulkVS support we now have MMS working, at least in a few tests. We are going to do some more thorough testing with different senders and recipients using different providers/carriers, both inbound and outbound, to make sure that it is functioning as expected and is reliable. I will follow up again when we have had time to perform and analyze this testing.

 

[Guillaume Bourgeois]

Thank you again for the suggestion and link to 3CX MMS documentation. Through working with BulkVS support we now have MMS working, at least in a few tests. We are going to do some more thorough testing with different senders and recipients using different providers/carriers, both inbound and outbound, to make sure that it is functioning as expected and is reliable. I will follow up again when we have had time to perform and analyze this testing.

Is this where we should enter our bank account number for BulkVS to deposit our royalty?
It's reassuring to know that with a quick and concise response, you were able to resolve the issue. All the credit goes to you; we merely guided you.


Good evening.