Nortel NTDU15CA (telecommunications transmission and networking portfolio) Telecom System Card / Module

The Nortel NTDU15CA is a Media Gateway 1000 (MG1000) shelf for the Communication Server 1000 (CS1000) platform, sharing its NTDU-prefixed part numbering with the CS1000 Signaling Server and PRI Gateway cards already catalogued from the same family. The MG1000 shelf houses the media-gateway line and trunk cards that give a CS1000 system its analogue/digital station and trunk capacity, sitting alongside the Signaling Server that handles the system’s IP call control. Tech-Star supplies this as a secondary-market spare for maintaining or expanding an existing CS1000/MG1000 installation. CS1000 systems typically pair one or more MG1000 shelves with a Signaling Server to give a site both its physical line/trunk capacity and its IP-based call control, and a failed or full shelf is a common reason for adding or replacing an MG1000 unit on a growing CS1000 site.