ESI 60 Key Expansion Console (5000-0234) Switches Adtran NetVanta 1544 Gigabit Switch

Adtran NetVanta 1544 Gigabit Switch 1700544G1 Description:

Adtran 1202820G1 Features:

digital signal level 3 (DS3)

Unisys My Vision X 30 Features:

Adtran Opti-6100 1184533L2 DS3M3E Description:

ESI 60 Key Expansion Console (5000-0234) Switches Adtran NetVanta 1544 Gigabit SwitchESI 60 Key Expansion Console Description: The ESI 60 key expansion console is an add on module specifically designed for ESI 48 key phones. The ESI 60 key expansion console is compatible with the X Class, E Class, and S class phone systems. The 60 Key EC is especially useful to telephone operators or call center supervisors that need the ability to transfer to any phone extension with the press of a button. The ESI 60 add on module provides an