Hi I am evaluating Grandstream GXP2170 with FreePBX 13.0.192.18, Asterisk Version: 13.6.0 setup, for some reason, 3 way conference call button on the phone is not working.(nothing happens when I try to join new one party) 3 way conference feature is working with Avaya 9620 / 9630 setup, so it is not FreePBX side of issue. Does anyone uses GXP2170’s 3-way conference call feature successfully, if so may I ask for some advice how to make it work?
According to a previous post, this following solution might help you: make sure you have more than only one key defined as “Line”.
Great that you got it sorted out. Glad I could help
