Cisco 3521 Administrator's Manual page 86

Configuring Gateway Settings
Procedure
Step 1 In the Gateway interface, on the sidebar, click Gateway (if not already selected).
Click the Settings tab.
Step 2
Click the Advanced button.
Step 3
Table 3-8
Administrator's Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
3-24
explains the settings you can configure in this section.
Chapter 3 Configuring the Cisco IPVC 3500 Series Gateway
OL-7995-01