SSG 140 Series Hardware Installation and Configuration Guide
36 PIM Configuration
ISDN Interface
Integrated Services Digital Network (ISDN) is a set of standards for digital
transmission over different media created by the Consultative Committee for
International Telegraphy and Telephone (CCITT) and International
Telecommunications Union (ITU). As a dial-on-demand service, it has fast call setup
and low latency as well as the ability to carry high-quality voice, data, and video
transmissions. ISDN is also a circuit-switched service that can be used on both
multipoint and point-to-point connections. ISDN provides a service router with a
multilink Point-to-Point Protocol (PPP) connection for network interfaces. The ISDN
interface is usually configured as the backup interface of the Ethernet interface to
access external networks.
To configure the ISDN interface, use the WebUI or CLI as follows:
WebUI
Network > Interfaces > List > Edit (bri1/0): Enter or select the following, then
click OK:
BRI Mode: Dial Using BRI
Primary Number: 123456
WAN Encapsulation: PPP
PPP Profile: isdnprofile
CLI
set interface bri1/0 dialer-enable
set interface bri1/0 primary-number "123456"
set interface bri1/0 encap ppp
set interface bri1/0 ppp profile isdnprofile
save
To configure the ISDN interface as the backup interface, see “PIM Configuration” on
page 35.
For more information on how to configure the ISDN interface, refer to the Concepts
& Examples ScreenOS Reference Guide.
T1 Interface
The T1 interface is a basic Physical Layer protocol used by the Digital Signal level 1
(DS-1) multiplexing method in North America. A T1 interface operates at a bit-rate
of 1.544 Mbps or speeds up to 24 DS0 channels.
The devices support the following T1 DS-1 standards:
ANSI TI.107, TI.102
GR 499-core, GR 253-core
AT&T Pub 54014
ITU G.751, G.703
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