Nortel 4000 补充手册

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Chassis, Card Types, and Upgrade Overview
303321-A Rev. 00
1-7
 
Upgrade Overview
Upgrading the card pairs on your current Voice Gateway 4000 involves following 
the steps outlined i
 and 
 of this guide. These steps can be 
followed for all upgrades and must be done in the order as they appear in this 
guide.
Warning: 
Be sure you understand all steps within the installation process 
before beginning the installation. This will prevent errors during the 
installation process.