ลักษณะเด่น
 TI TITAN chipset and TI voice engine
 38 programmable keys each with a dual-color LED
 Daisy-chain 6 modules for 228 programmable keys
 Dual color (red or green) LEDs for line status information
 Supports Busy Lamp Field(BLF), Bridge Line Appearance(BLA)
 Programmable for speed dialing, call pickup, Intercom,hold, transfer, voicemail, forward, DND...
 Expansion module( lower 2) is powered by the host phone

Features

Main Features 

38 programmable keys each with a dual color LED
Daisy-chain 6 modules for 228 programmable keys
Dual color (red or green) LEDs for line status information
Supports Busy Lamp Field(BLF), Bridge Line Appearance(BLA)
Programmable for speed dialing, call pickup, Intercom, hold, transfer, voicemail, forward, DND...
Applies to Yealink IP Phone SIP-T28P ,SIP-T26P and SIP-T38G
expansion module(lower 2) is powered by the host phone