karika

Prelazak klasične telefonije na IP mreže obećava nam u budućnosti manje troškove telefoniranja i primenu novih aplikacija.
Ovaj prelazak, takođe, predstavlja i izazov da se na pravi način ukomponuju dve potpuno različite tehnologije i filozofije.

SIP-T27G

Brži odziv korisničkog interfejsa i uopšte bolje performanse u odnosu na prethodni model – SIP-T27P, čine novi Yealink SIP-T27G izvrsnim komunikacijskim alatom za sve poslovne korisnike. Za kvalitet zvuka brine Yealink Optima HD tehnologija, te dodatak novog Opus codeca. Novost u odnosu na prethodnika je i dodatak Gigabit Ethernet interfejsa, kao i USB priključka, čime postaje moguće telefon dodatno proširiti spajanjem Bluetooth uređaja, Wi-Fi mrežom ili snimanjem razgovora na USB memoriju.

  • Karakteristike
  • Specifikacije
  • Yealink Optima HD voice
  • 3.66" 240x120 ekran sa pozadinskim osvetljenjem
  • Podrška za Opus codec
  • USB 2.0 (uz dodatne module - spajanje na Bluetooth, Wi-Fi i snimanje razgovora)
  • Do 6 SIP naloga
  • Dva Gigabit Ethernet porta
  • PoE
  • Dizajn bez korišćenja papirnih oznaka
  • Podrška za EHS i naglavne slušalice
  • Podržava dodatne konzole EXP20
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
  • USB port (2.0 compliant) Bluetooth earphone through BT40, Wi-Fi through WF40, USB call recording through USB flash drive
  • Enhanced DSS key
Audio Features
  • HD voice: HD handset, HD speaker
  • Wideband codec: Opus*, G.722
  • Narrowband codec: Opus*, G.711(A/µ), G.723.1, G.729, 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
IP-PBX Features
  • Busy Lamp Field (BLF)
  • Bridged Line Apperance (BLA)
  • Anonymous call, anonymous call rejection
  • Hot-desking, voice mail
  • Flexible seating
  • Call park, call pickup
  • Executive and Assistant
  • Centralized call recording
  • Visual voice mail
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
Management
  • Configuration: browser/phone/auto-provision
  • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
  • Auto-provision with PnP
  • Zero-sp-touch, TR-069
  • Phone lock for personal privacy protection
  • Reset to factory, reboot
  • Package tracing export, system log
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
  • Multilingual user interface
  • Caller ID with name and number
  • Power saving
Feature keys
  • 8 line keys with LED
  • 8 line keys can be programmed up to 21 paperless DSS keys (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
Interface
  • Dual-port Gigabit Ethernet
  • Power over Ethernet (IEEE 802.3af), Class 3
  • 1 x USB port (2.0 compliant)
  • 1 x RJ9 (4P4C) handset port
  • 1 x RJ9 (4P4C) headset port
  • 1 x RJ12 (6P6C) EHS port
  • 1 x RJ12 (6P6C) EXT port: Supports up to 6 Expansion Modules
Other Physical Features
  • Stand with 2 adjustable angles
  • Wall mountable
  • External Yealink AC adapter (optional): AC 100~240V input and DC 5V/1.2A output
  • Power consumption (PSU): 1.44~3.47W
  • Power consumption (PoE): 1.72~7.07W
  • Dimension (W*D*H*T): 265mm x 210mm x 170.5mm x 53.5mm
  • Operating humidity: 10-95%
  • Operating temperature: -10~50°C
Network and Security
  • SIP v1 (RFC2543), v2 (RFC3261)
  • Call server redundancy supported
  • NAT traversal: 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
  • LLDP/CDP/DHCP VLAN
  • ICE