Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 1229

idle-timeout
idle-timeout seconds;
Syntax
Hierarchy Level [edit interfaces dln unit logical-unit-number dialer-options]
Statement introduced before JUNOS Release 7.4.
Release Information
On J Series Services Routers with ISDN interfaces, configure the number of seconds
Description
the link is idle before losing connectivity.
Options seconds
interface—To view this statement in the configuration.
Required Privilege Level
interface-control—To add this statement to the configuration.
Related Topics
—Time for which the connection can remain idle. For interfaces configured
to use a filter for traffic, the idle timeout is based on traffic.
Range: 1 through 429497295
Default: 120 seconds
Configuring ISDN Logical Interface Properties on page 875
JUNOS Software Interfaces and Routing Configuration Guide
Chapter 62: Summary of Interface Configuration Statements
1159
idle-timeout