FEATURES GUIDE

General Features
Features Guide 133
Integrated Services Digital Network (ISDN)
Description
The system can manage a call received from the ISDN line by point-to-point or point-to-
multipoint configuration.
Point-to-point
A call received through 1 ISDN port is sent directly to a specific extension using a Direct
Dialling In (DDI) service.
Point-to-multipoint
One ISDN port can support a maximum of 10 Multiple Subscriber Numbers (MSN). A
call received through an ISDN port is sent directly to the pre-assigned extension if the
dialled number matches the stored MSN.
• The recommended parameter combinations are listed below. The underlined selections are
recommended.
Conditions
• After ISDN assignments, you should reset the system so that the assignments are
effective. (Power off and power on.)
Installation Manual References
• 2.2.5 ISDN (BRI) CO Line Connection Structure
• 2.4.1 CO Line Connection
• 2.10.1 System Restart
Programme
[422] ISDN
Port Type
[423] ISDN
Layer 1
Active Mode
[424] ISDN
Configuration
[425] ISDN
Data Link
Mode
[426] ISDN
TEI Mode
Parameter
CO
(DDI)
Call/
Permanent
Point
Call/
Permanent
Fix 0
CO
(MSN)
Call/
Permanent
Multipoint
Call
/
Permanent
Automatic
Extension
Call
/
Permanent
Multipoint
Call/
Permanent
Automatic