'> IP Phone SIP-T28P - Digital Myth Solutions

IP Phone SIP-T28P

IP Phone SIP-T28P - LargeThe Yealink SIP-T28P represents the next generation VoIP phone designed for business users who need rich telephony features, a friendly user-interface and superb voice quality. Equipped with the TI TITAN chipset, it offers high-definition voice quality through a TI voice engine, HD handset, HD speaker and HD codec (G.722). The large, high-resolution graphical display, combined with up to 48 keys, guarantees an excellent user experience in terms of configuration options, making calls and to access the express XML browse. To ensure that your audio data remains confidential, the Yealink SIP-T28P also supports security standards TLS, SRTP, HTTPS, 802.1x, Open VPN and AES encryption. These guard against electronic eavesdropping and data theft.


> TI TITAN chipset and TI voice engine
> 320×160 graphic LCD with 4-level grayscales
> 6 VoIP accounts, Broadsoft /Avaya/Asterisk validated
> HD Voice: HD Codec, HD Handset, HD Speaker
> 48 keys including 16 programmable keys
> BLF/BLA, SMS, Voicemail, Intercom
> Localized language, XML phonebook
> FTP/TFTP/HTTP, PnP Auto-provision
> PoE, Headset, 2xRJ45, Expansion module



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
> 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
> HTTP/HTTPS server
> DNS client
> NAT/DHCP server


> 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


> 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
> 320×160 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 (optional):
> AC 100~240V input and DC 5V/1.2A output
> Power over Ethernet (IEEE 802.3af)
> Power consumption (PSU): 1.3-2.1W
> Power consumption (PoE): 1.8-3.1W
> Dimension: (W*D*H*T):
> 273mm*200mm*158mm*58.5mm
> Operating humidity: 10~95%
> Operating temperature: -10~50°C