Specifications

4-18
Reference Guide
Model No.
Running Head
Reinitializing the System System Configuration and Operation
4.6 Reinitializing the System
The system stores information about its currently installed cards, the card configuration option
settings, WAN connections, passwords, and other data in nonvolatile memory (NVRAM) on
the Interface card. This card is labeled INF-E, INF+M, or INF on its faceplate ejector. Your
connection to the system is through the Interface card.
When you remove and replace most card types, the NVRAM remembers the previous card
settings. If the same kind of new card is inserted in the slot, you do not need to reprogram the
settings. However, if you replace a card with a different type of card, the system lets you delete
the old card, so that you can program new parameter settings for the new card (see the
Accept
function described in this chapter).
When you remove and replace an Interface card, the system automatically resets itself. If the
new Interface card was not previously used, you must re-register the system. If the new
Interface card was previously used, either it will use its internal settings, or the system will
request that you “zip” it, causing it to be reprogrammed.
When you remove and replace a CPU card with an
identical
CPU card, the system
re-evaluates the Interface card’s NVRAM and writes the old parameters (including your
current passwords) to the new CPU card. Your CPU card is labeled CPU-5 on its faceplate
ejector.
Note:
You must always use a CPU-5 XCON card in your system. CPU cards with any other
designations marked on their ejectors will not work (they use earlier system software
versions).
If the CPU card is replaced with an identical CPU card but the new card has a different
firmware version, a “zip” must be performed.