Nortel NTDK20KAE5 (telecommunications transmission and networking portfolio) Telecom System Card / Module

The Nortel NTDK20KAE5 is a Small System Controller Card fitted with 32MB of memory for Nortel’s Meridian 1 Option 11 Small System platform, sharing its NTDK-prefixed part numbering with the other Option 11 controller and SSC cards already catalogued from the same family. The controller card is the core call-processing card for the Option 11 cabinet, and memory capacity determines the size of software load and system database it can support. Tech-Star supplies this as a secondary-market spare for maintaining or upgrading an existing Option 11 Small System installation. Controller cards of this kind hold the entire Option 11 system’s configuration and call-processing state, so a failed controller typically takes the whole cabinet out of service until it is replaced, making a spare a priority stock item for sites still running Option 11 hardware.