Explaining the Cisco 504G IP phone and advice on headsets that are compatible.
The SPA504G is a VoIP Phone from Cisco which seems to be geared towards smaller companies. This model comes with 4 individual call lines with dedicated buttons for Headset, Mute, Volume, Hold, Menu settings, Speakerphone and Voicemail access. No AC power supply is needed, it can use POE (Power Over Ethernet). This phone has a 2.5mm headset … Continued