Siemens HiPath 1120 PABX Telephone System.

Siemens PABX Switchboard Systems, The professional Telephone PBX for Small sized Business Offices

HiPath 1120 PABX offers up to 6 inbound Telecom lines and 16 extensions/users.
HiPath 1120 has an integrated Voicemail / Auto Attendant option.
Automatic Leased Cost Routing.
pin codes-Forced account codes for control of the telephone account.
Telephone Management System for reporting on all phone calls