Q1: SETU VFXTH as a VoIP Gateway for Legacy PBX
Q2: How to configure Internal Calling in SETU VFXTH?
Q3: How to configure PEER-TO-PEER-CALLING in SETU VFXTH?
Q4: How to configure PEER-TO-PEER-Calling Between SETU VFX and SETU VFXTH?