Toshiba DADM2020 Add-on Module Gateways The 1200872L1 can support T1

The 1200872L1 can support T1 aggregation using MLPPP or MLFR

The 3Com VCX V7122 is a SIP business gateway

Atlas 500 Chassis (1200306L2)

SIP-based telephony features

Provides 128 HDLC controllers(56/64 Kbps each)

Toshiba DADM2020 Add-on Module Gateways The 1200872L1 can support T1Toshiba 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