THIS PRODUCT IS NOT AVAILABLE FOR ONLINE ORDERING.  PLEASE CALL 800-589-7379 TO SPEAK TO A REPRESENTATIVE FOR PRICING.
 
The Yealink EXP50 T58V Expansion Module provides a set of physical expansion keys which are programmable for different phone system functions.  Programmable functions include:
Busy Lamp Field (BLF) w/Presence
Speed Dial
Call/Line Appearance
Park Monitor w/Pickup
Intercom
Page
Call Recording
Day/Night Mode