★ POE/DC12-24V power supply, support IEEE 802.3at standard and IEEE 802.3bt; (optional)
Output power 20W
The operation is simple, no manual setting is required, and the connection to the server is automatically completed after networking;
Support to get tracks from the server;
Automatically complete the synchronization of the timing program with the server, the server program changes, and the network is automatically synchronized;
Compatible with standard SIP (RFC3261) protocol, can access mainstream IP PBX/IMS platform
Support VOIP phone access. (Provide a screenshot of the software interface and cover the official seal of the equipment manufacturer)
★ Support remote upgrade of the firmware version of this machine.
Support remote fixed-point broadcasting, remote sub-multicast broadcasting and whole area broadcasting;
The equipment is designed with embedded linux technology and DSP audio processing technology; adopts high-speed industrial-grade chips;
It has the function of collecting and broadcasting, one external audio source input or MIC input, and the collected audio files are sent to the designated terminal for playback;
Standby power is less than 0.3W, meeting the national environmental protection and energy conservation certification standards;
Support cross-virtual local area network or three-layer routing.
★With remote Internet playback function.
With the function of restoring factory settings
★Linked with IP camera video, real-time monitoring on-site conditions during broadcasting.
Online remote adjustment of output volume through software
Support IP address broadcast;
File playback: the delay is less than 50ms;
Real-time speech: Delay is less than 150ms;
The network delay is less than 50MS;
Short circuit, overheating, and overload automatic detection and protection functions;
Interface rate: 10M/100M/1000M adaptive;
Support all audio formats supported by WINDOWS;
★ The products have passed ISO9001, ISO14001 and OHSAS18001 system certification
★ The product has passed 3C certification;
★ IP network broadcasting has obtained a number of invention patents.
★ The manufacturer is a national high-tech enterprise

Network characteristics:
Support SIP 2.0, TCP/IP, UDP, DHCP
Support primary DNS and secondary DNS server
Support VLAN
Support SNTP client
Support VPN L2TP / PPTP
Support SRTP
Support webpage HTTP/HTTPS
Support Qos: 802.1p/q, DSCP
Support MD5 authentication
DHCP / static / PPPoE
STUN
Configuration and management:
Auto-Provisioning via FTP/TFTP/HTTP/HTTPS/DHCP OPT66/SIP PNP/TR069
Web management interface
Web-based Packet-dump
Configuration export/import
software upgrade
System Log (Syslog)
Audio characteristics:
Narrowband speech coding: G.711a/u, G.723.1, G.726-32K, G.729AB
Wideband speech coding: G.722
Voice activation detection/silence suppression
DTMF: In-band, Out-of-band (RFC2833) / SIPINFO
Interface: 1 RJ45; 1 USB; 1 3.5mm audio input interface; 1 DC24V power output; 2 LED signal indicators; 1 plug-in terminal audio output.
Power supply: POE or DC12V-24V
Rear panel buttons: volume +, volume -, reset, etc.
Linear input: 500mV
Linear output: 1000mV
Sex to noise ratio S/N: ≥97dB
Output audio response: 40-18000Hz
Total harmonic distortion: ≤0.1%
Standby power consumption: 20mW
Maximum power supply current: 2000mA
Size: 230*150mm
Weight: 2.0Kg