1.21 Integrated Services Digital Network (ISDN) Serv-
ice 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
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).
Trunk, 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 communica-
tion and one 64 kbps D channel
for signalling (30B + D/23B + D).
Trunk, QSIG
(Master, Slave),
Extension
*2
Point-to-Point
*1
® 3.14 [1-1] Slot—Port Property - BRI Port—Main— Port Type
*2
® 3.16 [1-1] Slot—Port Property - PRI Port (KX-TDA100/KX-TDA200/KX-TDA600 only)—Main— Port Type
*3
For BRI only:
® 3.14 [1-1] Slot—Port Property - BRI Port—Network— Access Mode
® [426] BRI 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.
2. ISDN Supplementary Service Table for Public Network
Service
Description & Reference
Direct Dialling In (DDI) Directs a call with a DDI number to a preprogrammed destination.
(P-P only)
® 1.1.1.3 Direct Inward Dialling (DID)/Direct Dialling In (DDI)
Multiple Subscriber Number
(MSN)
One ISDN port can support a maximum of 10 MSNs for routing in-
coming calls. (P-MP only)
® 1.1.1.4 Multiple Subscriber Number (MSN) Ringing Service
244 Feature Guide
1.21.1 Integrated Services Digital Network (ISDN)
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