Описание товара:

 

Specification

Model VIP-251T  Hardware WAN 1 x 10/100Mbps RJ-45 port LAN 1 x 10/100Mbps RJ-45 port LCD display 4 x 16 characters Speaker Full duplex hands free speaker phone Protocols and Standard Standard SIP 2.0 (RFC3261), MD5 for SIP authentication (RFC2069/ RFC 2617), SIP outbound proxy, SIP NAT Traversal Support STUN (RFC3489) Protocols SIP v1 (RFC2543), v2 (RFC3261), TCP/IP, UDP/RTP/RTCP, HTTP, ICMP, ARP, RARP, DNS, DHCP, SNTP, PPPoE Voice codec G.711: 64k bit/s (PCM) G.729: 8k bit/s Voice Standard Voice activity detection (VAD) Comfort noise generation (CNG) Acoustic echo canceller (AEC) G.165: Line echo canceller (LEC) Jitter Buffer Supplementary services Caller ID 3-Way conference Immediate (unconditional) call forwarding Busy call forwarding No answer calls forwarding Call Hold / Waiting / Transfer Call history Record incoming call Outgoing call Missed (not accepted) call history Network and Configuration Access Mode Static IP, PPPoE, DHCP Management Web, LCD menu keypad, Auto-Provision Dimension (W x D x H) 220 x 187 x 97 mm Operating Environment 0~50 Degree C, 0~90% humidity Power Requirement 5V DC, 1A EMC/EMI CE, FCC Class B