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Yealink SIP-T28P

Yealink SIP-T28P Summary

The Yealink SIP T28P (6 Line, PoE - HD Phone) is a 6 Line Business Phone designed for the business user who needs rich telephony features, friendly UI and superb voice quality.

Yealink SIP-T28P Technical Specifications

Phone Features

  • 6 VoIP accounts, hotline, emergency call
  • Call waiting, call transfer, call forward
  • Hold, mute, flash, auto-answer, redial
  • 3-way conference, DND, speed dial
  • XML Phonebook search/import/export
  • Black list, call history (100 entries)
  • Volume adjustment, ring tone selection
  • Tone scheme, System log
  • Multi-language (more than 20)
  • Supports up to 6 expansion modules

IP PBX System Integration

  • Dial plan, dial-now
  • SMS, Voicemail, MWI
  • BLF/BLA, intercom, paging
  • Call park, call pickup
  • Distinctive ringtone

Codecs and Voice Features

  • Wideband codec: G.722
  • Narrowband codec: G.711, G.723.1, G.726, G.729AB
  • VAD, CNG, AEC, PLC, AJB, AGC
  • Full-duplex speakerphone with AEC

Network Features

  • SIP v1 (RFC2543), v2 (RFC3261)
  • NAT Traversal: STUN mode
  • DTMF: In-Band, RFC2833, SIP Info
  • Proxy mode and peer-to-peer SIP link mode
  • IP Assignment: Static/DHCP/PPPoE
  • Bridge/router mode
  • TFTP/DHCP/PPPoE client
  • Telnet/HTTP/HTTPS server
  • DNS client
  • NAT/DHCP server

Management

  • FTP/TFTP/HTTP/PnP auto-provision
  • Configuration: browser/phone/auto-provision
  • Direct IP call without SIP proxy
  • Dial number via SIP server
  • Dial URL via SIP server

Security

  • HTTPS (server/client)
  • SRTP (RFC3711)
  • Transport Layer Security (TLS)
  • VLAN (802.1 pq), QoS
  • Digest authentication using MD5/MD5-sess
  • Secure configuration file via AES encryption
  • Phone lock for personal privacy protection
  • Admin/user configuration mode

Physical Features

  • TI TITAN chipset
  • 320x160 graphic LCD with 4-level grayscales
  • 48 keys including 16 programmable keys
  • 1xRJ9 (4P4C) handset port
  • 1xRJ9 (4P4C) headset port
  • 2xRJ45 10/100M Ethernet ports
  • 1XRJ12 (6P6C) expansion module port
  • Power adapter: AC 100~240V input and DC 5V/1.2A output
  • Power over Ethernet (IEEE 802.3af)
  • Power consumption: 1.6-2.6W
  • Net weight: 1.05KG
  • Dimension: 273x204x42MM
  • Operating humidity: 10~95%
  • Storage temperature: up to 60°C

 
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