Yealink SIP-T28
Please Note:
This phone DOES come with a power supply.
Yealink SIP-T28 Summary
The Yealink SIP T28 (6 Line non-poe) Business Phone designed for the business user who needs rich telephony features, friendly UI and superb voice quality. It is equipped with the leading TI TITAN chipset, offers high definition voice quality through TI voice engine, HD handset, HD speaker and HD codec (G.722). By the large, high-resolution graphical display, and together with all the 48 keys, SIP-T28 offers an excellent user experience to configure, make calls, etc.
Yealink SIP-T28 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 consumption: 1.6-2.6W
- Net weight: 1.05KG
- Dimension: 273x204x42MM
- Operating humidity: 10~95%
- Storage temperature: up to 60°C
Yealink SIP-T28 Diagrams
