Table of Contents
Advertisement
Chapter 3. System Features
Trunk Interface
Description
The System supports several types of Exchange Line Interfaces including the following:
•
Direct Dial Inward (DDI)
•
Integrated Services Digital Network (ISDN) - Basic Rate Interface (BRI)
•
ISDN - Primary Rate Interface (PRI)
•
Loop Start
Each exchange line type supports various features such as Delayed Ringing, Night Ringing, etc.
Trunk Interface - DDI (Not Available on UK Model)
The DDI feature allows an extension to have a dedicated direct number. The dedicated number allows
calls to be made directly to the extension, without the caller going through the attendant.
The DDI number may have from 1 to 4 digits (typically 4).
Each DDI Exchange Line Interface card (VB-44520) supports up to 8 DDI exchange lines.
Hardware Requirements
•
The -48V power supply is required.
Considerations
•
The DDI Exchange Line card supports 1 to 4-digit dial-pulse (10 pps) or Dual Tone
Multifrequency (DTMF) signalling.
•
DDI numbers must be between 0 and 9999.
Trunk Interface - ISDN BRI
The System supports ISDN BRI with the VB-44530 ISDN BRI interface unit. The VB-44530 is a T-
Point ISDN-BRI that supports 2 B (bearer) channels and 1 D (data) channel (2B + D; 144kbps or
192kbps). This unit connects to an ISDN Data Service Unit (DSU). Point-to-point and point-to-multi
operations are selectable.
The ISDN-BRI supports enblock setting and enblock setting at the sub-address.
Hardware Requirements
•
N/A
Considerations
•
A DSU is required (not available from Panasonic). Normally the DSU is supplied by the
telephone service provider.
Trunk Interface - ISDN-PRI
The System supports ISDN PRI with the VB-44540 ISDN PRI Interface unit. The VB-44540 is a T/S-
Point ISDN PRI that supports 30B (for UK) or 23B (for HK) (bearer) channels and 1 D (data) channel
(30B + D; 2M) (23B + D; 1.5M). This unit connects to an ISDN DSU.
A maximum of 1 ISDN-PRI unit may be installed in an S-ICX system with a CPC-HS. Up to 2 ISDN-
PRI units may be installed in an S-ICX system with a CPC-HM.
66
S-ICX (International) issued April 2002
Section 700 - Operation
S-ICX-64-700
Advertisement
Table of Contents
