Section 700 - Operation
Chapter 3. System Features
S-ICX-50-700
S-ICX (International) issued October 2000
63
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.
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.
•
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.
Hardware Requirements
•
N/A
Considerations
•
N/A
Trunk Interface - Loop Start
The VB-44510UK Loop Start interface unit supplies 8 loop start analog exchange line circuits. In
addition, the VB-44510UK Loop Start interface unit may alternatively be used to connect to loop start
exchange lines.
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