A high-performance Karel IP313G IP Phone support 4 lines and includes local 5-way conferencing. With an extra-large 320x240-pixel color display with backlight, Karel IP313G IP Phone brings comfortable operation experience and clear visual experience for users. Additional features include a dual-port Gigabit Ethernet with integrated PoE, and adjustable multi-angle stand support allow the Karel IP313G IP Phone to be a high-quality but cost-effective classic IP phone that maximizes productivity.

• Gigabit (10/100/1000 Mbps) dual-port Ethernet
• PoE support
• HD voice: HD handset, HD speaker
• 2,4" 320 x 240- pixel color display with backlight
• 4 VoIP accounts

Voice Specifications

• HD audio: HD speaker, HD headset 
• Intelligent noise filtering 
• Codec: G.711(A/µ), G.723.1, G.729AB, G.726, iLBC 
• Broadband Codec: G.722, Opus 
• DTMF: In-Band, Out of band (RFC2833), SIP Info 
• Full-Duplex Hands free Speaker with AEC 
• VAD, CNG, AEC, PLC, AJB, AGC

Phone Features

• 4 VoIP account 
• Call Holding, Mute, Do not disturb 
• One-touch speed dialing, Hotline, Redial 
• Call forwarding, Call on hold, Call transfer 
• Group listening, SMS, Emergency call, 
• Auto-answer, Returning to a call 
• 5-way conference 
• Direct IP call without SIP proxy 
• Ring tone selection/installation/delete 
• Manual and automatic adjustment of date and time 
• Call plan 
• XML browser 
• Action URL/URI 
• RTCP-XR (RFC3611), VQ-RTCPX 
• Improved DSS key

Phone Book

• Local Phonebook (1000 entries) 
• Black List XML/LDAP remote phone book 
• Smart Search Method 
• Phone Book Searching/Installation/Uploading 
• Call history: Outgoing / Incoming / Missed / Forwarded Calls

IP PBX Integration

• BLF (Busy Lamp Field) 
• BLA (Bridged line appearance) 
• Unknown call, Reject unknown call 
• Hot-desking, Voicemail 
• Flexible Session, Manager and Assistant 
• Call parking, Call hunting 
• Central Call record 
• Visual Voicemail 
• Call Record

Screen and Display

• 2.4" 320x 240-pixel color display 
• 16-bit depth color 
• Call and pending message LED flash 
• Dual color (Red or green) illuminated LED for line status information 
• Wall Paper 
• Iconic user interface with flexible button 
• Multilingual user interface 
• Display caller name and number 
• Screen Protector 
• Power saving

Feature Keys

• 4 line keys with LED 
• 5 feature keys: message, earphone, mute, redial, hands-free 
• 6 navigation keys 
• Volume control keys

Management

• Configuration: Web Interface / Phone / Automatic Update 
• Automatic Update over FTP / TFTP / HTTP / HTTPS 
• Automatic Update with PnP 
• Zero-sp-touch, TR-069 
• Phone Lock for Personal Security Protection 
• Restore factory settings, restart 
• Uploading Trace packages and system log

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261) 
• Call server redundancy support 
• NAT Translation: STUN Mode 
• Proxy and point-to-point SIP connection 
• IP Assigning Static / DHCP 
• HTTP / HTTPS web server 
• Synchronizing date and time by SNTP 
• UDP/TCP/DNS-SRV (RFC 3263) 
• QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP 
• SRTP for voice 
• Transport Layer Security (TLS) 
• HTTPS certificate management 
• Secure Configuration Folder with AES Passwording 
• Private identity authentication 
• OpenVPN, IEEE802.1X 
• IPV6 
• LLDP/CDP/DHCP VLAN 
• ICE

Interface

• 2xRJ45 Gigabit 10/100/1000M Ethernet ports 
• POE (Power over Ethernet (IEEE 802.3af)), class 2 
• 1xRJ9 (4P4C) headset port 
• 1xRJ9 (4P4C) earphone port

Other Physical Specifications

• Wall mountable 
• External Universal AC Adapter (optional): AC 100~240V input and DC 5V/1.2A output 
• Power Consumption (PSU): 2-3W 
• Power Consumption (PoE): 3.5-5W 
• Dimensions: 212mm*186mm*146mm*42mm 
• Operating Humidity: 10~95% 
• Storage temperature: -10~50°C