Beta Draft Confidential
Configuring Trunks
Working With Trunks
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/057-25
Using B-STDX 9000 Trunk Backup
 
Complete the steps in one of the following sections depending on the trunk type:
• For specific details on implementing the 
CBX 500/GX 550 switch platform’s APS 
trunk backup options, see “Configuring APS Trunk Backup and Fast APS 1+1 for 
ATM Direct Trunks” on page 7-29. 
• For an overview of B-STDX 9000 trunk backup, see “About Trunk Backup for the 
B-STDX 9000” on page 7-15.
Configuring the Primary Trunk for Trunk Backup
1. If you select Primary as the Trunk Type, the Primary Options tab is displayed as 
shown in Figure 7-8. 
Figure 7-8. Add Trunk: Primary Options Tab
Note  – Keep in mind that you must first configure a Primary trunk before you 
designate a backup trunk.