Nttk25 daughterboard, 100baset ip daughterboards – Nortel Networks 1000 User Manual

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920

NTDK20 Small System Controller card

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 NTDK20 SSC card’s Flash daughterboard is the NTTK25. It performs
most of the system software storage and data processing.

NTTK25 daughterboard

The NTTK25 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.

The Primary Flash drive contains 16 MB of storage space. Most of the
data storage is allocated to the Primary Flash drive – the main storage
area of customer configured data.

Other system data such as the Secure Storage Area (SSA) also resides in
the Flash drive. The SSA holds data that must survive power interruptions.

The Boot ROM is a 2 MB storage device located on the NTDK20 SSC
card. The Boot ROM contains the boot code, system data, patch data, and
the backup copy of the Primary Flash drive’s customer database.

100BaseT IP daughterboards

A 100BaseT IP Daughterboard mounted on the NTDK20 SSC card
enables the connection of the Call Server to a Media Gateway. See

Figure

261 "NTDK20 SSC card and expansion daughterboard in the Call Server"
(page 919)

Each daughterboard increases the number of conference channels by 32.
The maximum number of conference ports is 96.

Table 395 "Expansion

daughterboards" (page 922)

provides the ports, cables, and connection

data on the IP daughterboards.

The NTDK83 (dual-port) 100BaseT IP daughterboard mounts on the
NTDK20 SSC card in the Call Server. It provides connectivity to two Media
Gateways.

Note:

With a point-to-point connection, the Media Gateway must be