Panasonic S-ICX Manual
64
S-ICX (International) issued January 2000
S-ICX-10-700
Chapter 3. System Features
Section 700 - Operation
Trunk Interface
Description
The System supports several types of trunk 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 trunk type supports various features such as Delayed Ringing, Night Ringing, etc.
Trunk Interface - DDI (Not Available on UK, TX or EX 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.
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 Trunk Interface card (VB-44520) supports up to 8 DDI trunks.
Hardware Requirements
•
The -48V power supply is required.
Considerations
•
The DDI Trunk card supports 1 to 4-digit dial-pulse (10 pps) or Dual Tone Multifrequency
(DTMF) signalling.
(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.
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.
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.
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.
S-ICX: A maximum of 1 ISDN-PRI unit may be installed in an S-ICX system with CPC-HS. Up to 2
ISDN-PRI units may be installed in an S-ICX system with CPC-HM.
ISDN-PRI units may be installed in an S-ICX system with CPC-HM.