Users: 100 (up to 200)Max Concurrent Calls: 30 (up to 60)Max Analog Ports: 16Max BRI Ports: 16 Max GSM/3G Ports: 6Max E1/T1/J1 Ports: -2VoIP Trunks: 100Protocol: SIP (RFC3261), IAX2 Transport Protocol: UDP, TCP, TLS, SRTPCodec: G711 (alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM, iLBC, H263, H263P, H264, MPEG4DTMF: In-band, RFC4733, RFC2833, SIP INFOLAN: 1 × 10/100/1000 MbpsWAN: 1 × 10/100/1000 MbpsIP Services: Static IP, DHCP, VPN, Firewall, VLAN, DDNS, PPPoE, QoS, Static NAT, STUNVoicemail: 10000 min (expandable)Firewall: YesT.38 Fax: YesHot Standby: YesApp Center: Linkus Mobile Client, Phone Provisioning, LDAP Server, Conference Panel, VPN Server, Billing App, Hotel App, char utile h+ Integration, QueueMetrics Live IntegrationExternal Storage: SD CardUSB: 1Power: AC 100-240V 50/60HZ 1.8A maxSize(L x W x H)(cm): 44x25.2x4.4Weight: 2.5 kgPower Consumption: 5.5-41.2 WEnvironment: Operation Range: 0°C to 40°C, 32°F to 104°F; Storage Range: -20°C to ...