3. Technical Parameters

Supported Protocols

• LAN interface: IPv4, ARP, TCP, UDP, DHCP
• Device configuration: HTTP/HTTPS
• Call signalling: SIP 2.0 (UDP, TCP, TLS)
• Audio data transmission: RTP (G.711)
• Audio streaming: RTSP
• Time synchronisation: SNTP
• Auto provisioning: TFTP
• E-mail sending: SMTP

Power Supply

• External power supply: 9 to 26 V ± 10 % / 2 A DC or PoE, typically 12 V DC
• PoE: 802.3af (Class 0 – up to 12.95 W)
• Power consumption: 2 W at relax

 LAN Interface

• LAN interface count: 1 (since HW version R394-1)
• PoE: 802.3af
• Parameters: 10/100BASE-TX with Auto-MDIX, RJ-45
• Recommended cabling: Cat-5e or higher

Audio Interface

• Microphone input: Standard electret microphone, Max. Vpp = 100 mV, Rin = 4.4 kΩ, Vbias = 1.5 V
• Line input: Max. 755 mV RMS, Rin = 47 kΩ
• Amplifier output: 10 W amplifier of class D, MONO output, THD < 1%, minimum loudspeaker impedance: 4 Ω
• Line output: Max. 755 mV RMS, Rout = 600 Ω
• Acoustic echo cancelling: AEC, full duplex

Bandwidth 

• Audio codecs

• • PCMA, PCMU – 64 kbps (with 85.6 kbps headers)

Button/Keypad Interface

• Button count: Up to 16 separate buttons in 4x4 matrix
• Button function: User programmable
• Matrix outputs: 4 (ROW1–4 terminals) Uout < 0.1 V (L), Uout > 3.2 V (H), up to 8 mA
• Matrix inputs: 4 (COL1–4 terminals) Uin < 1.15 (L), Uin > 2.15 V, max. Uin = 5 V

LED Control Outputs

• Output count: 3 (LED1±, LED2± and LED3± terminals)
• Output function: User programmable
• Output current: Typ. 20 mA
• Output voltage: Up to 12 V

Digital Outputs

• Output count: 2 (OUT1± and OUT2± terminals)
• Output function: User programmable
• Output type: Power output with short-circuit protection
• Output voltage: 10 up to 12 V DC
• Output current: Up to 350 mA

Digital Inputs

• Input count: 2 (IN1± and IN2± terminals)
• Input function: User programmable
• Input type: Galvanically isolated inputs (opto-couplers)
• Characteristics: Uin < 1.1 V (L), Uin > 3 V (H), max. Uin = 32 V 

Relay Output

• Output count: 1 (NC, NO, COM terminals)
• Output function: User programmable
• Limits (AC/DC): Up to 30 V / 1 A

Mechanical Properties

• Working temperature: −40 °C – 55 °C
• Working relative humidity: 10 % – 95 % (non-condensing)
• Maximum altitude for intended use: 2000 m a.s.l.
• Storing temperature: −40 °C – 70 °C
• Dimensions: (142 x 98 x 34) mm (Part No. 9154100), (138 x 90 x 26) mm (Part No. 9154101)
• Weight: Up to 280 g (Part No. 9154100), Up to 150 g (Part No. 9154101)
• Protection class: IP20 (Part No. 9154100), IP00 (Part No. 9154101)