PBX Telephones Sets Voice Mail and PBX Systems Used PBX Telephones AT&T Partner MLS-34D (Black) The Partner MLS-34D has 32 programmable buttons with dual LEDs for line or feature appearances, 2 line x 16 character display. $89.00 Panasonic DBS 16 Button (VB-44210-G) Panasonic VB-44210 is a 16 button telephone which provides 6 flexible feature/line keys (dual colored LED) and 10 personal speed dial keys. $45.00 Panasonic DBS 22 Button No (VB-44220-G) The Panasonic VB-44220-G 22-button phone provides 12 programmable feature or line keys with dual colored LEDs and 10 speed dial keys. $55.00 Panasonic DBS 22 Button (VB-44223-G) Panasonic VB44223 is a 22 Button LCD w/Display telephone set. This phone provides 12 flexible feature/trunk keys (dual colored led) and 10 speed dial keys. $65.00 Site Map