Intercom:

• Two SIP lines, supporting SIP 2.0 (RFC3261) and related RFC
• Supports two lines RTSP
• Voice broadcast IP address ? Button or remote volume adjustment
• Switch signal input and output
• Talkback recording output
• Handsfree talking
• Default auto answer ? Dynamic multicast function ? Supports DC or POE power supply
• Support for Function key interface ? Support monophonic active speakers ? Network time synchronization ? Action URL / Active URI remote control

Audio:

• Narrowband speech coding: G.711a / u, G.723.1, G.726-32K, G.729AB
• Broadband speech coding: G.722
• Half Duplex Echo Cancellation (AEC)
• DTMF: In-band, out-of-band DTMF (RFC2833) / SIP Info Networking/ Protocols
• Supports PoE (802.3af)
• Primary and secondary DNS servers are supported
• Support VLAN
• Supports SNTP client
• Support VPN L2TP / PPTP / IPSec Supports SRTP
• Support for HTTP / HTTPS web pages ? Support Qos: 802.1p / q, DSCP
• Support MD5 authentication ? Supports Web Filter ? DHCP / static / PPPoE
• STUN

Physical Specifications:

• 2 RJ45 interface: Yellow: WAN port 10 / 100M adaptive, support POE PoE: 802.3af (Class 3: 6.49 ~ 12.95W) Black: LAN port (Only connected to the original camera) Cable: Super five lines or better ? 1 blue indicator (SIP status and network status)
• 2 volume plus or minus key
• 1 restore factory settings key
• 1 recording output interface: 3.5mm standard audio interface 15 Ohm impedance ? 1 ground screw ? 1 way passive speaker interface: Output power: 4Ω, POE / 10W, 12V /10W,18V / 20W, 24V / 30W; related to supply voltage. Wire diameter: 18 AWG or larger diameter Interface:Pluggable terminal block
• 1 headset speaker: Output: 32 Ohm 1.2V interface:Pluggable terminal block
• 1 DSS key interface (4 lines): Indicator: Output 5.0V 5mA Interface:pluggable terminal block
• 1 way microphone input interface: Recommendation: Use an electret condenser microphone Sensitivity: -38dB, Impedance 2.2 K Ohm bias voltage 2.2V Interface:Pluggable terminal block
• 1 short circuit input and output interface (built-in relay): Relay: MAX DC30V /1A, AC125V/0.5A, Interface:pluggable terminal block
• 2 parallel power input interface: 12V-24V / 2A DC 1 road for the 5.5mm DC power seat 1 road way 2Pin pluggable terminal block
• Standby power consumption: DC12V 1.32W / POE 1.78W
• Housing material: aluminum alloy shell
• Installation: Indoor installation ? Operating temperature: -30 ~ 70 ?
• Storage temperature: -40 ~ 70 ?
• Relative humidity: 10% - 95%
• Equipment size: 113x83x28mm
• Packing size: 138x108x77mm
• Equipment weight: 250g