Panasonic DBS 576 Technical Manual

Section 700 - Operation Chapter 3. System Features
576-50-700 DBS 576 (USA) issued September 2001 3-13
Table 3-1.   Trunk COS
Hardware Requirements
•N/A
Related Programming
•N/A
Considerations
•N/A
Class of Service - Ext/Ext Restriction
Ext/Ext Restriction COS allows or restricts calls placed to other extensions based upon the Extension 
COS. Each Extension COS is programmed to either originate or not originate calls to another 
Extension COS.
Hardware Requirements
•N/A
Related Programming
• FF1-0-03:...

3-14 DBS 576 (USA) issued September 2001 576-50-700
Chapter 3. System Features Section 700 - Operation
The following table shows the features that can be enabled/disabled for each Extension COS.
Table 3-2.   Extension COS
Class of Service Features
Number Feature
1Intercom Call Type (Tone/Voice)
2Onhook Transfer at Ringback (Allow/Restrict)
3Onhook Transfer at Talk (Allow/Restrict)
4On-Hook Transfer at Camp-On (Allow/Restrict)
5Exclusive Hold for Non-Appearing CO (System/Exclusive)
6Exclusive Hold on SLTs...

Section 700 - Operation Chapter 3. System Features
576-50-700 DBS 576 (USA) issued September 2001 3-15
Hardware Requirements
•N/A
32Trunk Queuing (Allow/Restrict)
33Manual DND Override Send (Allow/Restrict)
34Forced DND Override (Allow/Restrict)
358-Party Conference (Allow/Restrict)
36Voice Call Send (Allow/Restrict)
37Voice Call Receive (Allow/Restrict)
38 Dial Tone Stop (Allow/Restrict)
39Dial Tone Pre-Pause Check (Check/No check)
40Long Talk Alarm for Outgoing CO Calls (Enable/Disable)
41Recall Timer...

3-16 DBS 576 (USA) issued September 2001 576-50-700
Chapter 3. System Features Section 700 - Operation
Related Programming
• FF2: Trunk COS 
• FF3: Extension COS Assignments
Considerations
•N/A
Class of Service - T1 Trunk Ring Back Service Tone
With Version 3.5 and higher, the system can be programmed to send a simulated ring back tone to T1 
trunks when the CO does not provide a ring back tone. 
Hardware Requirements
•N/A
Related Programming
• FF1-0-04: Trunk COS
Considerations
• Supports Ground...

Section 700 - Operation Chapter 3. System Features
576-50-700 DBS 576 (USA) issued September 2001 3-17
Table 3-3.   Station Timer Class
Hardware Requirements
•N/A
Related Programming
• FF1-1-05: Station Timer Class Definitions
• FF3-0 (Extensions): Station Timer Class Assignments
Considerations
•N/A
CO Ringing Types
Description
Several types of CO ringing are available for the System including the following:
• Direct Inward Dialing (DID) Ringing
• Direct In Line (DIL) Ringing
• Direct Inward System...

3-18 DBS 576 (USA) issued September 2001 576-50-700
Chapter 3. System Features Section 700 - Operation
a call to a group using the Virtual Extension feature.) DID Busy/Delayed Ringing is also available 
with DID Ringing. (See “DID Day/Night Busy/Delayed Ringing” on page 3-52.)
For more information on DID CO Trunk Interface, see “CO Trunk Interface - DID” on page 3-21.
Hardware Requirements
•N/A
Related Programming
•N/A
Considerations
• Caller ID takes priority over the DID name assignment.
• Only one of...

Section 700 - Operation Chapter 3. System Features
576-50-700 DBS 576 (USA) issued September 2001 3-19
DIL Delayed Incoming Ring Enhancement
Prior to Version 3.0, a DIL call that was not answered by the Immediate Ringing extension was 
simultaneously passed to all other extensions in the MCO if Delayed Ringing was set. Beginning with 
Version 3.0, an incoming DIL call that is not answered can be passed to a single Delayed Ring 
destination or to all extensions with an MCO key that includes the incoming...

3-20 DBS 576 (USA) issued September 2001 576-50-700
Chapter 3. System Features Section 700 - Operation
DISA Ringing
DISA Ringing (which is related to the DISA feature) allows a CO trunk specified as a DISA CO trunk 
to ring and give off-site users dial-in access to the System. Once the DISA trunk is accessed, the user 
receives dial tone and may dial an extension. 
For more information on DISA, see “Direct Inward System Access” on page 3-28.
Hardware Requirements
•N/A
Related Programming
•N/A...

Section 700 - Operation Chapter 3. System Features
576-50-700 DBS 576 (USA) issued September 2001 3-21
CO Trunk Interface - DID
The DID 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 DID number may have from 1 to 4 digits (typically 4).
Each DID Trunk Interface card (VB-44520) supports up to 8 DID trunks.
Hardware Requirements
• The -48V power supply is required....

3-22 DBS 576 (USA) issued September 2001 576-50-700
Chapter 3. System Features Section 700 - Operation
Considerations
• A DSU is required (not available from Panasonic).
CO 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 23 B (bearer) channels and 1 D (data) channel (23B + D; 1544kbps). 
This unit connects to an ISDN DSU.
Up to 3 units may be installed in a cabinet if you use full channel (23B + D or 24...