YEALINK T58V CANNOT COMPLETE OUTBOUND CALLS - THEY DIAL BUT DONT CONNECT

[AOM-SUPPORT]

I have a new Yealink phone on an existing 3CX setup, I have provisioned it and can make calls in to it without issue. However, when i dial a number, it picks up a line and the other phone rings i.e. my mobile, however when I answer the call on the yealink phone it continues to show that it is dialing the number and doesnt seem to complete this process, any one got any ideas what I can do?

 

[Evolute IT]

Please provide the following informations so we can help better:

• 3CX Version, e.g. Standard Annual 16.0.2.910
• Server OS, e.g. Debian 9 / Windows Server 2012 R2 / Raspberry Pi
• Is the 3CX Server Hosted and where?
• IP Phone Make/Model/Firmware
• Provisioning Method: Local / VPN / STUN / SBC
• Trunk Provider or Gateway Make/Model
• Has the Firewall Checker passed: YES / NO
• Are custom Phone Templates being used: YES / NO

 

[BrenttG]

I am using a T58V myself and not having this issue, it is setup as Direct SIP/STUN and is not local to 3CX.

Based on your explanation it sounds as if the SIP negotiation is not fully getting back to the T58 to tell it the call is connected. Suspect the firewall or router at the T58 side of the network.