- Two SIP extensions (Note: One of these extensions is a dedicated night ringer, which is not capable of answering a call, and will only play a stored message while the call is ringing.)- Voice prompt pass code and page control- 9 user-uploadable page messages- 10 channel prioritized Multicast ports- Page to Polycom phones- HTTP Web Interface and setup- G711 A-Law and u-Law, G.722 codecs- Built-in diagnostics- 10k Ohm input for background music- 600 Ohm Balanced audio out- Unbalanced Line-Out- Remote amp