Filter
Top Products
1.20 Integrated Services Digital Network (ISDN) Service Features
182 Feature Guide
1.20 Integrated Services Digital Network (ISDN)
Service Features
1.20.1 Integrated Services Digital Network (ISDN)
1.20.1.1 Integrated Services Digital Network (ISDN)—SUMMARY
Description
ISDN is a digital switching and transmission network. ISDN transmits voice, data, and image
in digital format. ISDN lines, if available, can be connected to public line (trunk), private line
(QSIG), or ISDN terminal devices (extension).
1. ISDN Interface and Configuration
Note
Point-to-Point (P-P):
One ISDN terminal device can be connected to one ISDN port.
Point-to-multipoint (P-MP):
A maximum of eight ISDN terminal devices can be connected to one ISDN port.
Interface Type Description Port Mode
Configuration
Type
*
Basic Rate
Interface (BRI)
Provides two 64 kbps B channels
for communication and one 16
kbps D channel for signalling (2B
+ D).
Trunk,
Extension
Point-to-Point/
Point-to-
multipoint
QSIG (Master,
Slave)
Point-to-Point
Primary Rate
Interface (PRI)
Provides thirty or twenty-three 64
kbps B channels for
communication and one 64 kbps
D channel for signalling (30B + D/
23B + D).
Trunk, QSIG
(Master, Slave),
Extension
Point-to-Point
*
:
BRI Configuration [426] *For BRI only