Toshiba DADM2020 Add-on Module Gateways an RJ-21X port for a

an RJ-21X port for a patch panel connection

RJ-45 Ethernet

On-board echo cancellation (G

0 or higher running Essential Edition

Provides 128 HDLC controllers(56/64 Kbps each)

Toshiba DADM2020 Add-on Module Gateways an RJ-21X port for aToshiba DADM2020 Add on Module Description: The Toshiba DADM2020 adds 20 feature buttons to any of the DKT2000 Series telephones. The feature buttons can be co line access, direct station selection, and station or system speed dial. Up to 2 DADM can be attached to a telephone and provide 40 buttons to supplement the telephone's 10 or 20 buttons. The Toshiba DSS secures to the phones with a metal plate and screws and a cable plugs inside of the phone