Nortel Meridian 1 option 11C Planning And Installation Manual page 22

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The circuit cards described in this section are used in the Option 11C Main cabinet.
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Three versions of Software Daughterboard may be used:
• The NTDK81 provides 40 Mb of memory.
• The NTTK13 provides 48 Mb of memory.
• The NTDK21 provides 40 Mb of memory.
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There are five types of Fiber Expansion Daughterboards; three single port and
two dual port:
• The NTDK22 Single Port Fiber Expansion Daughterboard (10m).
• The NTDK24 Single Port Fiber Expansion Daughterboard (3 km,
multi-mode).
• The NTDK79 Single Port Fiber Expansion Daughterboard (3 km,
single-mode).
• The NTDK84 Dual Port Fiber Expansion Daughterboard (10m).
• The NTDK85 Dual Port Fiber Expansion Daughterboard (3 km,
multi-mode).
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The NTDK20 SSC card is equipped with a socket designed to accommodate
the Security Device shipped with each new Option 11C system. The Security
Device is normally not attached to the SSC card when it is shipped. It must
be attached to the SSC card during initial installation procedure. See Figure 5
on page 25.
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The NTDK20 SSC card has a 2-slot PCMCIA interface socket located on its
faceplate. The socket can accommodate a Software Delivery card used
primarily for software upgrades on existing Option 11C systems. It can also
be used for creating an external backup copy of the customer data base.
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