Telefon IP profesional pentru birou Yealink SIP-T28P. Telefon destinat secretariatului sau birourilor de companii, firme, etc. Poate fi folosit și ca telefon normal.

Detalii tehnice:

SIP 2.0(RFC3261) protocol, NAT traversal: STUN mode
IP assignment: DHCP / Static IP / PPPoE
Auto-provision: firmware, configuration, ringtone, phonebook etc.
QoS: IEEE 802.1p/q tagging (VLAN), Layer 3 ToS
In-band DTMF, Out-band DTMF and SIP INFO DTMF
Proxy mode and peer-to-peer SIP link mode
Standard encryption and authentication(MD5 and MD5-sess)
Phone Features

Support up to 6 SIP accounts, Hotline, Emergency call
Call hold, Call waiting, Call transfer, Call forward
BLF, Call park, Call pickup, Dial plan, Intercom
3-way conference, DND, Mute, Speed dial, Dial-now, Auto-answer
Voicemail, MWI, SMS, XML phonebook, Black list, Phone lock
Volume adjustment, Rings selection, Tone scheme, Distinctive ringtone, Multi-language, System log export, Admin/User Configuration Mode
Voice Features

High-definition Handset, High-definition Speaker
Full-duplex hands-free speakerphone compliant with IEEE 1329
Supports HD Wideband voice codec: G.722
Narrowband voice codecs: G.711, G.726, G.729AB, G.723.1
Supports VAD, CNG, AEC, PLC, AJB, AGC
Support SRTP voice encryption
Physical Features

TI Titan Chipset
320x160 pixels graphical LCD with 4-level grayscales
48 keys including 4 soft keys and 16 programmable keys
Supports up to 6 Expansion Modules(6x38 keys with dual-color LED)
1x RJ9 headset port
2x RJ45 Ethernet ports
PoE(IEEE 802.3af) optio