Yealink SIP-T42G - Bundle of 8 Gigabit IP Phone 6 Line Keys with Dual-color (red or green)LED  Wall Mountable SIP-T42G 8-PACK Dual Gigabit IP Phone SIP-T42G is a feature-rich sip phone for business. The 12-Line IP Phone has been designed by pursuing ease of use in even the tiniest details. SIP-T42G supports vast productivity-enhancing feature such as SCA, BLF List, callforward, call transfer, 3-way conference Yealink SIP Phones continue to evolve, the T4 Series have been designed by pursuing ease of use in even the tiniest details, these new design include paper label free design, new foot stand allows two posi-tions for the device, non-slip rubber feet, ergonomic recessed buttons With programmable Keys, the IP Phone supports vast productivity-enhancing features. Using standard encryption protocols to perform highly secure remote provisioning and software upgrades.