VoIP-ATC-EX20B
IP PBX ATCOM Expansion module to control telephone extensions AT840
EX20 is an expansion module for Atcom AT-840 and supports 20 function keys
Supports BLF, Speed Dail, DND, Directory, Redail, Call Transfer, Call Forwarding, Call History Details
No additional power supply needed. Powered by AT-840 directly
20 keys for each EX20
Each AT840 supports a maximum of 2 EX20