2.4-inch 320x240 pixel color screen, 4 sip lines hd voice poe enabled (only x303p) 2.4-inch color screen handset / hands-free / headset mode desktop stand / wall mountable (optional) optional external power supply
support audio codec g.722 and opus, hd audio on speakerphone and handset, local phonebook (1000 entries) remote phonebook (xml/ldap, 1000 entries) call logs (in/out/missed, 600 entries) blocked list/allowed list screen saver voice message waiting indication (vmwi) programmable dss/soft keys network time synchronization support plantronics wireless headset (through plantronics apd-80 ehs cable.
support 6-party local conference, call out / answer / reject mute / unmute (microphone) call hold / resume call waiting intercom caller id display speed dial anonymous call (hide caller id) call forward (always/busy/no answer) call tra