Karel IP1141 is a feature-rich sip phone for business. It has been designed by pursuing ease of use in even the tiniest details. Delivering a superb sound quality as well as rich visual experience. The IP1141 also offers a wide range of functions, like SCA, BLF List, call forward, call transfer, 3-way conference, and up to support various features. Using standard encryption protocols to perform highly secure remote provisioning and software upgrades.

• Optima HD voice
• 3.66" 240x120-pixel graphical LCD with backlight
• Up to 6 SIP accounts
• Paper label free design
• PoE
• Headset, EHS support
• Integrated stand with 2 adjustable angles
• Wall mountable (optional)
• Simple, flexible and secure provisioning options

Audio Features

• HD voice: HD handset, HD speaker
• Wideband codec: G.722
• Narrowband codec: G.711(A/μ), G.723.1, G.729AB, G.726, iLBC
• DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC

Display and Indicator

• 3.66" 240x120-pixel graphical LCD with backlight
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status information
• Intuitive user interface with icons and soft keys
• National language selection
• Caller ID with name, number

Phone Features

• 6 VoIP accounts
• One-touch speed dial, redial
• Call forward, call waiting
• Call transfer, call hold
• Call return, group listening
• Mute, auto answer, DND
• 3-way conference call
• Direct IP call without SIP proxy
• Ring tone selection/import/ delete
• Hotline, emergency call
• Set date time manually or automatically
• Dial plan
• XML Browser,
• Action URL/URI
• Integrated Screenshots
• RTCP-XR

Directory

• Local phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Intelligent search method
• Phonebook search/import/export
• Call history: dialed / received / missed / forwarded

IP-PBX Features

• Busy Lamp Field (BLF)
• Bridged Line Apperance(BLA)
• Anonymous call, anonymous call rejection
• Hot-desking
• Message Waiting Indicator (MWI)
• Voice mail
• Call park, call pickup
• Intercom, paging,
• Music on hold
• Call recording

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261)
• Call server redundancy supported
• NAT transverse: STUN mode
• Proxy mode and peer-to-peer SIP link mode
• IP assignment: static/DHCP
• HTTP/HTTPS web server
• Time and date synchronization using 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 manager
• AES encryption for configuration file
• Digest authentication using MD5/ MD5-sess
• OpenVPN, IEEE802.1X
• IPv6

Feature Keys

• 8 line keys with LED
• 8 line keys can be programmed up to 21 various features (3-page view)
• 8 features keys: message, headset, conference, mute, hold, transfer, redial, hands-free speakerphone
• 4 context-sensitive “soft” keys
• 6 navigation keys
• 2 volume control keys
• Illuminated message key
• Illuminated headset key

Management

• Configuration: browser/phone/ auto-provision
• Auto provision via FTP / TFTP / HTTP / HTTPS for mass deploy
• Auto-provision with PnP
• Zero-sp-touch
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log

Other Physical Features

• Stand with 2 adjustable angles
• Wall mountable (optional)
• External universal AC adapter (optional): AC 100~240V input and DC 5V/1.2A output
• Power consumption (PSU): 1.17:3.32W
• Power consumption (PoE): 1.60:5.94W
• Dimension(W*D*H*T): 265mm x 210mm x 170.5mm x 53.5mm
• Operating humidity: 10-95%
• Operating temperature: -10~50°C