Inbound Caller ID Not Displaying on Phones – 3CX v20

[LisbonCreek Systems]

We're experiencing an issue where inbound caller ID is not displaying on phones, despite the SIP header containing the correct information.

Environment:

• 3CX Version: 20.0
• Sip Trunk Provider: SkySwitch
• Phone Model: T33G
• License: Professional Annual
• Issue: Inbound caller ID not shown on endpoints
• What we see in packet capture:

From: "CALLER ID NAME" <sip:[email protected]>
To: <sip:[email protected]>

The caller ID (name and number) is clearly present in the SIP packet, but it does not appear on the phones. Outbound caller ID is working correctly with no issues.

Any insight into how 3CX v20 processes caller ID on inbound calls, or settings we should verify to ensure the From display name and number show properly on endpoints, would be appreciated.


Thanks in advance!

 

[paulodagraca]

Hello LisbonCreek Systems

I thinks this can help you, please read this thread:

Thread 'Caller Number Displayed Not Caller Name'

Jan 16, 2025

We're using 3cx v20 upgraded to the latest stable version with a twilio trunk where we also subscribe to cnam database lookup however the incoming callers id "name" is not displayed only the phone number. Is there something in the trunk settings that need to be changed to get this functionality to work? I checked the activity log on a verbose setting and it does show the name of the business like so:

From: "COMPANY NAME" <sip:[email protected]>;tag=dfgf87

Appreciate any insights, thanks!

• bc24fl
• Replies: 26
• Forum: Phone System / PBX

Paulo