Users-50 Max Concurrent Calls-25 Max FXS Ports-8 Max FXO/BRI Ports-8 Max GSM/3G/4G Ports-4 Max 4G Port (Data)-1 Max E1/T1/J1 Ports - VoIP Trunks-50 Protocol-SIP (RFC3261), IAX2 Transport Protocol-UDP, TCP, TLS, SRTP Codec-G711 (alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM, iLBC, H263, H263P, H264, MPEG4 DTMF-In-band, RFC4733, RFC2833, SIP INFO Ethernet Interfaces-2 ? 10/100 Mbps IP Services-Static IP, DHCP, VPN, Firewall, VLAN, DDNS, PPPoE, QoS, Static NAT, STUN Voicemail-5000 min (expandable) Firewall-Yes T.38 Fax-Yes Hot Standby-Yes App Center-Linkus Mobile Client, Phone Provisioning, LDAP Server, Conference Panel, VPN Server, Billing App, Hotel App, charutile h+ Integration, QueueMetrics Integration External Storage-SD Card USB - Power-AC 100-240V 50/60HZ 0.6A max Size (L x W x H) (cm)-34 x 21 x 4.4 Weight-1.48 kg Power Consumption-2.1-18.5 W
