We have a Trio 8800. We use it with our Microsoft Office 365 E5 account for web meetings. It is also connected as a SIP device to our Mitel phone system for inbound and outbound calling. It is working fine with Skype for Business meetings or standard phone calls through Mitel, but we’re having trouble joining 3rd party conference bridges.
For example, we have a vendor that provided their conference bridge information for a recurring meeting. We call the toll-free number for their conference bridge and the call goes through successfully. When we try to enter the conference ID followed by the # sign, nothing happens. I have tested this with multiple 3rd party conference bridges and they all have the same issue. I have tested both by adding a participant to our Skype call, or dialing out through the SIP line and neither way allows us to enter the conference ID and # sign.
Below are the details of our phone model. Attached is a backup and settings export from the web interface.
Phone Model Trio 8800
Part Number 3111-65290-001 Rev:A
MAC Address 64:16:7F:3D:CE:E8
Wi-Fi MAC Address 64:16:7F:3D:CE:E9
Bluetooth MAC Address 64:16:7F:3D:CE:EA
IP Address 192.168.80.122
UC Software Version 5.7.1.4133
Updater Signature Release
System Name Aspen Phone