Điện thoại khẩn cấp phát sóng hai phím

Two SIP lines
Working temperature: -20℃～70℃
Ringing sound pressure: ≥ 70dB(A);
Call connection time ≤ 6S (no blocking);
AC220V/POE power supply
Rated sound pressure level of the extension: ≥90dBA (with loudspeaker function);
Dải âm thanh: 300Hz ~ 3400Hz;
Độ méo hài: ≤ 5%;
Function keys: SOS, duty room
Ringing sound pressure: ≥ 70dB(A);
Full-duplex intercom function;
WAN: 10/100BASE-TX s Auto-MDIX, RJ-45;
LAN: 10/100BASE-TX s Auto-MDIX, RJ-45;
Support static IP address modification, DNS domain name resolution;
Optional G.729, G.723, G.711, G.722, G.726 and other voice coding methods;
Auto-Provisioning via FTP/TFTP/HTTP/HTTPS/DHCP OPT66/SIP PnP/TR-069
IP acquisition method: Static IP setting/DHCP/PPPoE
Support one-button direct call dispatcher function and SOS emergency call;
Provide alarm, monitoring, intercom, multicast, broadcast functions;
Strong system expansion compatibility, support standard SIP 2.0 (RFC3261) and related RFC protocols;
Adopt advanced echo cancellation technology;
The sensitivity of the speaker and microphone can be adjusted;
The system provides recording and recording output, and can call and query recording files at any time;
Can be set through the WEB interface;
Online software upgrade
Support: TCP/UDP, HTTP, ARP/RARP, DNS, NTP, TFTP, TELNET;
Function keys (2/3/6 keys can be customized): other function keys such as tight call, multicast and hang up
Amplifier output power: 30/50/60/120/240W can be customized
Material: Glass fiber reinforced polyester
Built-in speaker: 4Ω3W
Industry certification: CE, ROHS, FC, CCC
Dimensions: 389.2x242x172.4mm