Panasonic DBS Section 540 Reference Manual
Digital Business System
Section 540
T1 Networking
Reference
Manual
Doc. No. 550X10001A
Revised April 2000
The contents of this manual are subject to change without notice and do not constitute a
commitment on the part of Panasonic Telecommunication Systems Company (PTSC). Every
effort has been made to ensure the accuracy of this document. However, due to ongoing product
improvements and revisions, Panasonic cannot guarantee the accuracy of printed material after
the date of publication nor can it accept responsibility for errors or omissions. Panasonic will
update and revise this document as needed.
The software and hardware described in this document may be used or copied only in accordance
with the terms of the license pertaining to said software or hardware.
This document may be reproduced either electronically or in print as needed by certified dealers
and technicians of DBS products. However, the information contained in this document must not
be altered, copied, or changed in any way that misrepresents the installation, operation, or other
function or feature of the DBS product or Panasonic. Panasonic assumes no liability for any
alteration or misrepresentation of information contain herein.
Copyright 1996 by Panasonic Telecommunication Systems Company (PTSC)
Revised April 2000. All rights reserved.
Reference to third-party products is for information only and does not constitute an endorsement
or recommendation. Panasonic does not assume responsibility for the performance of third-party
products.
Contents
Chapter 1. Introduction to DBS T1 Networking
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Description of T1 Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pre-Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ordering T1 Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
What You Must Purchase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maximums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 2. System Planning
System Planning Forms and Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
About the Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Basic Site Layout and Numbering Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Network Trunk Configuration and Trunk Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Network Trunk Group Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Network Page Group Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Network Attendant Calling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Node Route Selection (NRS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Toll Restriction Service (TRS) Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Forwarding Incoming CO Calls to Another DBS Node . . . . . . . . . . . . . . . . . . . . . . . . . . 54
SMDR Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Chapter 3. Quick-Start Programming
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Hardware Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Programming Initial T1 Network Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Chapter 4. Programming
Settings Modified for Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
System Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Trunk Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Extension Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Other Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
T1 Settings Added for Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
DBS-2.3/9.2-540 T1 Networking-Revised April 2000 Page 3
Chapter 5. Network Feature Operation
Call Forwarding to Extensions on Another Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Extension to Network Extension Calling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Forwarding CO Calls to Network Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Network Attendant Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Network Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Blind Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Screened Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Network Conference Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Network DISA Calling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Network Paging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Node Route Selection (NRS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Remote Network DBS CO Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
SMDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Chapter 6. Sync Source Examples
T1 Network - Two System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Local Connections - Not Through CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Remote Connection - Through CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
T1 Network - Three System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Local Connection - Not Through CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Remote Connections - Through CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
T1 Network - Four System Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Local Connection - Not Through CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Remote Connection - Through CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
DBS Network Telephone User Guide
Calling a Network Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Calling the Attendant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Call Forwarding to Extensions on Another Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Network Paging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Transferring Calls to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Blind Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Screened Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Conferencing Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Accessing Outside Lines on Another Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Page 4 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
Chapter 1. Introduction to DBS T1
Networking
This chapter provides an overview of DBS T1 Networking.
The following table summarizes the topics contained in this chapter.
Topic Page
Overview 7
Description of T1 Networking 7
Pre-Installation Requirements 9
Ordering T1 Services 9
What You Must Purchase 10
System Requirements 10
Maximums 10
DBS-2.3/9.2-540 T1 Networking-Revised April 2000 Page 5
Page 6 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
Introduction to DBS T1 Networking Overview
Overview
Description of T1 Networking
Two to four DBS systems may be interconnected using T1 connections to
create a DBS telephone network. The DBS systems may be located in the
same building, separate buildings, across the city or across the country.
DBS T1 Networking provides the following features:
• Network Extension to Extension Calling
• Call forwarding to Network Extensions
• Paging to Network DBS
• Network Route Selection
• Remote DBS CO Access
• SMDR Network Support
• Common Network Attendant Calling (calls that revert to the attendant will
go to the local attendant)
The T1 Network consists of two to four DBS systems that use 4-digit
numbering. The first digit (1 to 4) specifies the network DBS location (or
node) to receive the call. The remaining digits follow the conventional threedigit DBS numbering plan. For instance, dialing 2105 selects extension 105
on Network DBS node 2.
Figure 1-1. DBS Network Numbering Plan
DBS 1
1XXX
DBS 2
2XXX
DBS 4
4XXX
DBS-10-540 T1 Networking - Issued 9/6/96 Page 7
DBS 3
3XXX
Overview
Introduction to DBS T1 Networking
Page 8 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
Introduction to DBS T1 Networking Pre-Installation Requirements
Pre-Installation Requirements
Use the following guidelines to prepare your site for T1 installation.
Ordering T1 Servi c es
The following guidelines describe T1options that must be ordered from your
central office or interexchange carrier (if used). These guidelines are designed
to cover almost all T1 installations. However, special requirements should be
discussed with your provider.
Table 1-1. Guidelines for ordering T1 services
Item to be Ordered Options
Line Type E&M with wink start for both incoming and outgoing calls.
Trunk Signaling Wink start
Signaling Code DS-1
Line Code AMI
Framing Format D4 (Superframe) or ESF (Extended Superframe). D4 is used in
most cases.
Signaling Method In-band
Tones Coordinate with T1 Service Provider.
Note: If the CO does not provide dial tone, program the DBS to
generate its own dial tone.
DBS-10-540 T1 Networking - Issued 9/6/96 Page 9
Pre-Installation Requirements
What You Must Purchase
Each DBS system in the network must have the appropriate T1 equipment as
described in the DBS T1 Reference Manual and the DBS Installation Manual.
Please refer to these manuals for a description of what must be purchased.
Note: The DBS T1 Trunk Card (VB-43561) must contain COP Version 2.0 or
later.
System Requirements
• A CPC-EX is required in every networked DBS system.
• Each DBS must contain one or two T1 interfaces with at least a portion of
the trunks dedicated to network traffic.
• Some DBS configurations limit the number of T1 interfaces that may be
used. See Section 500 - T1 Supplement for more information.
Introduction to DBS T1 Networking
Maximums
• Depending on the DBS cabinet configuration, each DBS in the network
may have up to 48 T1 trunks dedicated to T1 Networking.
Note: Any T1 trunks not dedicated to T1 networking may be used for
outside CO trunks. However each trunk used in the network diminishes the
number of T1 trunks available for outside CO connections. Trunk ports not
used by T1 (either with network or non-network) are available for CO
trunks.
• Up to four DBS systems may be included in the DBS Network.
Page 10 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
Chapter 2. System Planning
This section provides system planning guidelines and procedures required for
a DBS T1 Network and provides an example DBS Network Setup. Once this
planning is performed, see Chapter 3 - “Installation and Quick Start
Programming” and Chapter 4 - “Programming Reference” for programming
instructions.
This chapter covers the following topics.
Topic Page
System Planning Forms and Guidelines 13
About the Example 13
Network Trunk Configuration and Trunk Routing 15
Network Trunk Group Selection 21
Network Page Group Operation 23
Network Attendant Calling 29
Node Route Selection (NRS) 29
Toll Restriction Service (TRS) Restrictions 38
Forwarding Incoming CO Calls to Another DBS Node 54
SMDR Settings 59
DBS-2.3/9.2-540 T1 Networking-Revised April 2000 Page 11
Page 12 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
System Planning Forms and Guidelines
Note: This manual assumes that the T1 card has been successfully installed
in the DBS Cabinets. See Section 500 - T1 Reference Manual for T1
Installation Instructions.
About the Example
Most forms in the following pages are followed by an example. For these
example forms, it is determined there are four locations across the country to
be networked together as follows:
• The sites are named after their locations -- Northwest (area code 202),
Northeast (area code 303), Southeast (area code 404) and Southwest (area
code 505)
• Each site contains dual-cabinet DBS 96 systems and contain two T1
interfaces
• The calling traffic between DBS systems is balanced (an even amount of
traffic is expected between systems). The maximum number of
simultaneous calls between any two DBS systems is expected to be 8 calls
or less.
• Every station is allowed to page anywhere on the network
• A network attendant is located at DBS 1
• Node Route Selection (routing calls to another node for outbound
processing) is to be used for calls in a remote DBS’ area code
• TRS is to be used to restrict long distance calls originating from a distant
DBS for some extensions.
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 13
System Planning Forms and Guidelines
Basic Site Layout and Nu mbering Plan
Determine the DBS systems to be included in the DBS network and assign a
DBS Network Number to each DBS. Use Figure 2-1 to make a basic diagram
of the DBS network. Cross out any DBS not present in the network.
Figure 2-1. Network Site Layout and Numbering
System Planning
Example
DBS 1
1XXX
DBS 4
4XXX
DBS 2
2XXX
DBS 3
3XXX
Using the basic information provided, the layout and numbering for the
network are determined as shown in Figure 2-2.
Figure 2-2. Example Network Site Layout and Numbering
DBS 1 - NW
(Area Code 202)
DBS 2 - NE
(Area Code 303)
1XXX 2XXX
DBS 4 - SW
(Area Code 505)
4XXX
Page 14 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
DBS 3 - SE
(Area Code 404)
3XXX
System Planning System Planning Forms and Guidelines
Network Trunk Configuration and Trunk Routing
Determine the network call traffic between the DBS nodes and the number of
trunks required to handle this traffic. Note that calls can be relayed through
another network DBS to reduce cost or simplify connections.
Diagram the trunking on the following diagram by filling in the dashed lines
for actual trunk connections with a solid line.
Figure 2-3. Network Trunking Configuration
DBS 1
1XXX
No. of Trunks _____
DBS 4
4XXX
No. of Trunks _____
No. of
Trunks _____
No. of Trunks _____
DBS 2
2XXX
No. of
Trunks _____
DBS 3
3XXX
No. of Trunks _____
Each set of network trunks connecting to another DBS must be placed into a
Network Trunk Group that will be used for network call routing purposes. Up
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 15
System Planning Forms and Guidelines
to 3 Network Trunk Groups are possible for each DBS. Label the Network
Trunk Groups 1, 2, or 3 in Figure 2-4.
Figure 2-4. Network Trunk Group Configuration
System Planning
DBS 1
1XXX
Network Trunk
Group _____
Network Trunk
Group _____
DBS 4
4XXX
Network Trunk
Group _____
Network Trunk
Group _____
Network Trunk
Group _____
Network Trunk
Group _____
Network Trunk
Group _____
Network Trunk
Group _____
Network Trunk
Group _____
Network Trunk
Group _____
DBS 2
2XXX
Network Trunk
Group _____
Network Trunk
Group _____
DBS 3
3XXX
Page 16 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
Allocate the Network Trunks to Network Trunk Groups in Table 2-1 through
Table 2-4.
Table 2-1. DBS 1 Network Trunk Assignments
Network Trunk Group 1
Trunks
Table 2-2. DBS 2 Network Trunk Assignments
Network Trunk Group 1
Trunks
Table 2-3. DBS 3 Network Trunk Assignments
Network Trunk Group 2
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 3
Trunks
Network Trunk Group 3
Trunks
Network Trunk Group 1
Trunks
Table 2-4. DBS 4 Network Trunk Assignments
Network Trunk Group 1
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 3
Trunks
Network Trunk Group 3
Trunks
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 17
System Planning Forms and Guidelines
Example
In this example call traffic is not expected to exceed 8 simultaneous calls.
Eight trunks for calls between any two DBS systems should be adequate.
However, under the T1 configuration being considered, a call can be relayed
by an intermediary DBS. In this case, a call will pass through one DBS to get
to another. Therefore a maximum of 16 network trunks between any two
systems should be enough. All remaining T1 trunks may be split off to handle
CO calls. Figure 2-5 illustrates the determined network trunk configuration.
Figure 2-5. Example Networking Trunking Configuration
System Planning
DBS 1
1XXX
16 Tie Trunks
DBS 2
2XXX
16 Tie Trunks
16 Tie Trunks
16 Tie Trunks
DBS 4
4XXX
Page 18 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
DBS 3
3XXX
System Planning System Planning Forms and Guidelines
The actual trunk numbers used and the Network Trunk Group Numbers must
be determined for each DBS. In this example, each DBS has two sets of
trunks for network calls. These paths are assigned a Network Trunk Group
number (either Network Trunk Group 1 or Network T runk Group 2) as shown
in Figure 2-6 below:
Figure 2-6. Example Network Trunk Group Configuration
DBS 1
1XXX
Network Trunk
Group 1
Network Trunk
Group 1
4XXX
Network Trunk
Group 2
Network Trunk
Group 2
Network Trunk
Group 2
Network Trunk
Group 2
DBS 2
2XXX
Network Trunk
Group 1
Network Trunk
Group 1
DBS 3DBS 4
3XXX
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 19
System Planning Forms and Guidelines
Each Network Trunk Group contains 16 trunks. The example Network
Trunks to Network Trunk Groups configurations are listed in Table 2-5
through Table 2-8.
Table 2-5. Example DBS 1 Network Trunk Assignments
System Planning
Network Trunk Group 1
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 3
Trunks
17-32 49-64 N/A
Table 2-6. Example DBS 2 Network Trunk Assignments
Network Trunk Group 1
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 3
Trunks
17-32 49-64 N/A
Table 2-7. Example DBS 3 Network Trunk Assignments
Network Trunk Group 1
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 3
Trunks
17-32 49-64 N/A
Table 2-8. Example DBS 4 Network Trunk Assignments
Network Trunk Group 1
Trunks
Network Trunk Group 2
Trunks
Network Trunk Group 3
Trunks
17-32 49-64 N/A
Page 20 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
Network Trunk Group Selection
Each DBS system determines how to route a network call by selecting a
Network Trunk Group based upon the leading digit dialed. When a network
call is dialed, the system will try to route the call via an available trunk in the
Network Trunk Group with first priority. If no trunk in this Network Trunk
Group is available, the DBS will then try to route the call via a trunk in the
group with second priority then third priority. For each DBS, assign the
network trunk routing for each node number dialed using Table 2-9 through
Table 2-12:
Table 2-9. Network Trunk Group Selection for DBS 1
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
2
3
4
Table 2-10. Network Trunk Group Selection for DBS 2
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
1
3
4
2nd Priority
Network Trunk
Group
2nd Priority
Network Trunk
Group
3rd Priority
Network T runk
Group
3rd Priority
Network T runk
Group
Table 2-11. Network Trunk Group Selection for DBS 3
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
2nd Priority
Network Trunk
Group
3rd Priority
Network T runk
Group
1
2
4
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 21
System Planning Forms and Guidelines
Table 2-12. Network Trunk Group Selection for DBS 4
System Planning
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
1
2
3
Example
From Figure 2-6 we determine the best choices for routing network calls to
the other DBS nodes. These routes are listed in Table 2-13 through Table 2-
16.
Table 2-13. Example Network Trunk Group Selection for DBS 1
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
2nd Priority
Network Trunk
Group
2nd Priority
Network Trunk
Group
3rd Priority
Network T runk
Group
3rd Priority
Network T runk
Group
22 1 N/A
32 1 N/A
41 2 N/A
Table 2-14. Example Network Trunk Group Selection for DBS 2
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
12 1 N/A
31 2 N/A
41 2 N/A
2nd Priority
Network Trunk
Group
3rd Priority
Network T runk
Group
Page 22 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
Table 2-15. Example Network Trunk Group Selection for DBS 3
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
12 1 N/A
21 2 N/A
42 1 N/A
Table 2-16. Example Network Trunk Group Selection for DBS 4
Network Node
(Leading Digit
Dialed)
1st Priority
Network Trunk
Group
11 2 N/A
21 2 N/A
32 1 N/A
2nd Priority
Network Trunk
Group
2nd Priority
Network Trunk
Group
3rd Priority
Network T runk
Group
3rd Priority
Network T runk
Group
Network Page Group Operation
DBS Networking allows paging across the network. An extension may
originate a page on a distant networked DBS by dialing the DBS node
number (1-4) followed by the Paging Access code. For example, to page DBS
node 3 Paging Group 01, dial 3#01.
A Network Paging Class of Service Parameter has been added to enable or
disable network paging. This Class of Service (COS) is then checked when a
network page is dialed to allow or deny the extension paging access.
The network DBS that receives a page request may also choose to allow or
deny a network page. A Class of Service may be assigned to each incoming
Network Trunk Group. If a page request is received on a Network Trunk
Group, its Class of Service is checked to determine if the page is to be
allowed or denied.
Assign network paging restrictions (enable or disable) to each Class of
Service.
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 23
System Planning Forms and Guidelines
Table 2-17. DBS 1 Network Paging Class of Service Assignments
Class of Service Enable Network Paging?
0 Yes (predefined, cannot be changed)
1 Yes ___ or No ___
2 Yes ___ or No ___
3 Yes ___ or No ___
4 Yes ___ or No ___
5 Yes ___ or No ___
6 Yes ___ or No ___
7 Yes ___ or No ___
8 Yes ___ or No ___
Table 2-18. DBS 2 Network Paging Class of Service Assignments
Class of Service Enable Network Paging?
0 Yes (predefined, cannot be changed)
1 Yes ___ or No ___
System Planning
2 Yes ___ or No ___
3 Yes ___ or No ___
4 Yes ___ or No ___
5 Yes ___ or No ___
6 Yes ___ or No ___
7 Yes ___ or No ___
8 Yes ___ or No ___
Table 2-19. DBS 3 Network Paging Class of Service Assignments
Class of Service Enable Network Paging?
0 Yes (predefined, cannot be changed)
1 Yes ___ or No ___
2 Yes ___ or No ___
3 Yes ___ or No ___
4 Yes ___ or No ___
5 Yes ___ or No ___
6 Yes ___ or No ___
7 Yes ___ or No ___
8 Yes ___ or No ___
Page 24 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
Table 2-20. DBS 4 Network Paging Class of Service Assignments
Class of Service Enable Network Paging
0 Yes (predefined, cannot be changed)
1 Yes ___ or No ___
2 Yes ___ or No ___
3 Yes ___ or No ___
4 Yes ___ or No ___
5 Yes ___ or No ___
6 Yes ___ or No ___
7 Yes ___ or No ___
8 Yes ___ or No ___
In order for an extension to perform network paging, it must be assigned a
Class of Service that allows network paging.
Assign all extensions in the network an appropriate class of service to allow
or deny network paging. The receiving DBS may allow or deny network
pages by assigning a Class of Service to the incoming Network Trunk Group.
List the Network Trunk Group COS assignments in Table 2-21 through Table
2-24 below.
Table 2-21. DBS 1 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
1
2
3
Table 2-22. DBS 2 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
1
2
3
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 25
System Planning Forms and Guidelines
Table 2-23. DBS 3 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
1
2
3
Table 2-24. DBS 4 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
1
2
3
Note: Remember to assign the extensions at the receiving DBS node to an
appropriate paging group.
System Planning
Example
In our example, any extension may originate a page to any node. We
therefore allow network paging on every COS.
Table 2-25. DBS 1 Network Paging Class of Service Assignments
Class of Service Enable Network Paging?
0 Yes (predefined, cannot be changed)
1Yes X
2Yes X
3Yes X
4 Yes X
5 Yes X
6 Yes X
7Yes X
8 Yes X
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
Page 26 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
Table 2-26. DBS 2 Network Paging Class of Service Assignments
Class of Service Enable Network Paging?
0 Yes (predefined, cannot be changed)
1 Yes X
2 Yes X
3 Yes X
4Yes X
5Yes X
6Yes X
7 Yes X
8Yes X
Table 2-27. DBS 3 Network Paging Class of Service Assignments
Class of Service Enable Network Paging?
0 Yes (predefined, cannot be changed)
1 Yes X
2 Yes X
3 Yes X
4Yes X
5Yes X
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
6Yes X
7 Yes X
8Yes X
Table 2-28. DBS 4 Network Paging Class of Service Assignments
Class of Service Enable Network Paging
0 Yes (predefined, cannot be changed)
1 Yes X
2 Yes X
3 Yes X
4Yes X
5Yes X
6Yes X
7 Yes X
8Yes X
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
or No ___
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 27
System Planning Forms and Guidelines
System Planning
In order for an extension to perform network paging, it must be assigned a
Class of Service that allows network paging. In our example, we are
assigning all extensions to COS 1 that allows network paging.
The receiving DBS may allow or deny network pages by assigning a Class of
Service to the incoming Network Trunk Group. In our example, all network
trunk groups are assigned to COS 1 to allow network paging as shown in
Table 2-29 through Table 2-32 below.
Table 2-29. Example DBS 1 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
11
21
31
Table 2-30. Example DBS 2 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
11
21
31
Table 2-31. Example DBS 3 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group Network Paging COS (0-8)
11
21
31
Table 2-32. Example DBS 4 Network Trunk Group Paging Class of Service Assignments
Incoming Network
Trunk Group
Network Paging COS (0-8)
11
21
31
All extensions in the example DBS are assigned to paging groups.
Page 28 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
System Planning System Planning Forms and Guidelines
Network Attendant Calling
DBS networking allows for calling a network attendant. This attendant may
be any DBS attendant in the network. If a user dials 0, the call is routed to this
system attendant.
Note: Calls that revert to the attendant will revert to the local attendant, not
the network attendant.
Table 2-33. Network Attendant Calling
Dial “0” Calls Originat-
ing From User on
DBS 1
DBS 2
DBS 3
DBS 4
Same DBS DBS 1 DBS 2 DBS 3 DBS 4
Example
In our example, a network attendant is located at DBS 1. If a user dials 0 at
any DBS, the call is routed to the attendant on DBS 1
Table 2-34. Example Network Attendant Calling
Dial “0” Calls Originat-
ing From User on
DBS 1 X
DBS 2 X
DBS 3 X
DBS 4 X
Same DBS DBS 1 DBS 2 DBS 3 DBS 4
Calls Attendant at
Calls Attendant at
Node Route Selection (NRS)
Outside calls made on a DBS may be routed through another DBS before
outdialing to the public network. This is called Node Route Selection.
Typically, this is used to reduce long distance charges by routing calls based
on the area code(s) where the remote DBS is located.
Each DBS NRS table contains up to 50 NRS entries. Each entry contains the
dialed number to match (up to 6 digits), the minimum number of digits to be
dialed, and which network DBS (1-4) should receive the call. List any dialed
numbers to be included in NRS in Table 2-35 through Table 2-38.
If more than one NRS match is possible, then NRS will process the ca ll using
the NRS entry with the most complete match possible. For instance if one
DBS-2.3/9.2-540 T1 Networking - Revised April 2000 Page 29
System Planning Forms and Guidelines
NRS entry is 1201 and another is 12013, then if 12013333333 is dialed, then
the 12013 NRS entry is used. If 12014444444 is dialed, then the 1201 NRS
entry is used.
Note: If a call is routed to a remote DBS, LCR processing at the r emote DBS
may need to delete digits. For instance, if 1201XXXXXXX is routed by NRS
to a DBS in area code 201, the 1201 will need to be deleted by LCR when
dialed out by the remote DBS. (For information on LCR programming, see
the DBS Section 400 - Programming.)
Table 2-35. NRS for DBS 1
System Planning
Item #Dialed Number
(Up to 6 digits)
Min. #
of
Digits
Network
Node to
Outdial
the Call
Item #Dialed Number
(Up to 6 digits)
Min. #
of Digits
Network
Node to
Outdial
the Call
126
227
328
429
530
631
732
833
934
10 35
11 36
12 37
13 38
14 39
15 40
16 41
17 42
18 43
19 44
20 45
21 46
22 47
23 48
24 49
25 50
Page 30 T1 Networking - Revised April 2000 DBS-2.3/9.2-540
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