1.18 Integrated Services Digital Network (ISDN)
Service Features
1.18.1 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
Interface Type
Basic Rate
Interface (BRI)
Primary Rate
Interface (PRI)
:
*1
:
*2
Notes
1.18 Integrated Services Digital Network (ISDN) Service Features
Provides two 64 kbps B channels
for communication and one 16
kbps D channel for signalling (2B
+ D).
Provides thirty or twenty-three 64
kbps B channels for
communication and one 64 kbps
D channel for signalling (30B + D/
23B + D).
BRI Port Type *For BRI only
BRI Configuration *For BRI only
•
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.
Description
Configuration
Port Mode
*1
Trunk, QSIG
Point-to-Point/
(Master, Slave),
Point-to-
Extension
multipoint
Trunk, QSIG
Point-to-Point
(Master, Slave),
Extension
Feature Guide
Type
*2
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