Cisco Systems 11500 Series ユーザーズマニュアル

The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 
issues. These classifications are assigned when severe network degradation 
significantly impacts business operations. When you contact the TAC Escalation 
Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, 
go to this URL:

Before calling, please check with your network operations

 

center to determine the 

level of Cisco support services to which your company is entitled: for example, 
SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When 
you call the center, please have available your service agreement number and your 
product serial number.