1.21 Integrated Services Digital Network (ISDN) Service Features
Feature Guide 249
1.21 Integrated Services Digital Network (ISDN)
Service Features
1.21.1 Integrated Services Digital Network (ISDN)
1.21.1.1 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
*3
Basic Rate Interface (BRI) Provides two 64 kbps B channels
for communication and one 16
kbps D channel for signalling (2B +
D).
Tr u nk ,
Extension
*1
Point-to-Point/Point-
to-multipoint
QSIG (Master,
Slave)
*1
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).
Tr u nk , Q S I G
(Master, Slave),
Extension
*2
Point-to-Point
*1
:
→ 2.7.14 [1-1] Slot—BRI Port—Main—Port Type
*2
:
→ 2.7.16 [1-1] Slot—PRI Port (KX-TDA100/KX-TDA200/KX-TDA600 only)—Main—Port Type
*3
For BRI only:
→ 2.7.14 [1-1] Slot—BRI Port—Network—Access Mode
→ [426] BRI Configuration