Fixed Interfaces / Module Slots : 2 x 10/100/1000 Base-T LAN ports, 2 x 10/100 Base-T WAN ports, 2 x USB ports, console and services ports, contact closure adjunct port, an ETR port (for emergency calls during power failures), and a Compact Flash slot for additional announcements storage, 8 x media module slots, supporting up to 8 telephony media modules, and a maximum of 3 IP WAN modules and 1 S8300 Server Telephony Media Modules : MM711 8 port Analog Media Module, MM714 4 trunk + 4 telephone Analog Media Module, MM714B 4 trunk + 4 telephone Analog with ETR Media Module, MM716 24 port Analog Media Module, MM712 8 port DCP Media Module, MM717 24 port DCP Media Module, MM710 1 port T1/E1 Media Module, MM721 8 port BRI Media Module, MM722 2 port BRI Media Module IP WAN Modules : PoE Module : Capacities : Busy Hour Call Completions = 10.000, Chassis slot count = 8 Media Module slots, DSP Channels = 20/80/160 on daughterboard, scale to 320 total, Touch Tone Receivers = 64, Announcement Port = 63 Playback; 1 Record , Announcement and MOH Storage = 45 Minutes/4 hours with Branch Memory Kit, Power Supplies = 2, Maximum DCP/Analog endpoints = 192, Maximum IP Telephones with S8300D Server = 1000, Maximum BRI Telephones = 128, Maximum BRI Trunks = 64, Maximum PSTN Trunks = 184 T1, 238 E1, Maximum G450s per External Avaya Server = 250, Maximum G450s per S8300 Server = 50 Telephone Compatibility : Avaya 96XX, 1600 and 4600 Series IP Telephones, Avaya 9400, 1408, 1416, 2400, 6400 and 8400 Series Digital Telephones, Avaya or other analog telephones Power : 90V-264V AC, 48-62 Hz Dimensions : 48.26 x 46 x 13.3 cm Weight : 7.5 kg