Memory - Nortel Enterprise 1000 Reference Manual

Page 14 of 236 Succession System Controller card

Memory

553-3023-211 Standard 1.00 June 2001
• three Serial Data Interface (SDI) ports
• 32 channels of Conferencing (64 if one dual port 100BaseT IP
daughterboard is present, or 96 if two dual port 100BaseT IP
daughterboards are present)
• one 10BaseT port
• 30 channels of Tone and Digit Switch (TDS) and a combination of eight
Digitone Receivers (DTR) or Extended Tone Detectors (XTD)
• additional tone service ports (four units of MFC/MFE/MFK5/MFK6/
MFR or eight DTR/XTD units)
The majority of system and customer configured data is both controlled and
stored on the NTDK20FA SSC card's Flash ROM. An active and backup
copy of customer data is also kept on the Flash ROM.
The NTDK20FA SSC card also retains a copy of customer files in the event
of data loss, in an area called the Backup flash drive. The NTDK20FA SSC
card is equipped with 8 MB of temporary memory space called DRAM.
DRAM functions much like RAM on a computer system, storing stores and
processes temporary automated routines and user-programmed commands
while the system is running. The DRAM on the SSC card stores operating
system files, user files, overlay data, patch codes, and the active copy of the
customer database.
The NTDK20FA SSC card's Flash daughterboard, the NTTK13, performs
most of the system software storage and data processing for the Succession
CSE 1000.
NTTK13 daughterboard
The NTTK13 is a 48 MB daughterboard comprised of Flash ROM and
Primary Flash drive. It is required in the Call Server and Media Gateway.
• The Flash ROM holds 32 MB of ROM memory, comprising operating
system data and overlay programs. Flash ROM is expandable using an
expansion flash daughterboard.