4.1.2 Integrated Services Digital Network (ISDN)
Service Features
4.1.2.1 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
communication
and one 64 kbps
D channel for signalling (30B +
D/23B + D).
Trunk, QSIG
(Master, Slave),
Extension
*2
Point-to-Point
*1
® 9.26 PBX Configuration—[1-1] Configuration
—Slot—Port Property - BRI Port—Main—
Port Type
*2
® 9.27 PBX Configuration—[1-1] Configuration
—Slot—Port Property - PRI Port—Main—
Port Type
*3
For BRI only:
® 9.26 PBX Configuration—[1-1] Configuration—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)
® 2.1.1.3 Direct Inward Dialling
(DID)/Direct Dialling In (DDI)
Multiple Subscriber
Number (MSN)
One ISDN port can support a maximum of 10 MSNs for routing
incoming calls. (P-MP only)
® 2.1.1.4 Multiple Subscriber Number
(MSN) Ringing Service
Calling Line Identification
Presentation (CLIP)
Sends the caller’s
telephone number to the network when making
a call. The called party can see the number on his telephone
display before answering the call.
® 4.1.2.2 Calling/Connected Line Identification Presentation
(CLIP/COLP)
Feature Guide 381
4.1.2 Integrated Services Digital Network (ISDN) Service Features
To Next Page
Loading...
Need help?
General
