Personal Speed Dialing ................................................................................................... 6-31
Station Lockout..................................................................................................................... 6-33
DBS-70-700DBS Manual - Issued 8/1/95 vii
Contents Section 700 - Operation
viiiDBS Manual - Issued 8/1/95DBS-70-700
Section 700 - Operation Introduction
About This Manual
Software Versions Covered by This Manual
This manual covers all versions of CPC-A, all versions of CPC-AII software
through Version 7.0 and CPC-B software through Version 7.0.
Differences in feature availability or operation are noted within each feature
description.
If you are using this manual for a single DBS system, make note of its
software version in the following table. This note may be referenced by
technicians or owners of the system.
Software version information for systems shipped with this
document
CPC Model: Software Version:
Organization
This manual contains detailed descriptions of DBS features. The feature
descriptions are organized according to the following categories:
Feature CategoriesDescription
System FeaturesSystem Features are either available on a
system-wide basis or aid in the overall
administration of the DBS.
Attendant FeaturesAttendant Features assist the attendant in
serving as a central answering point. In addition,
attendant features also provide special
capabilities for monitoring and programming
extensions.
Key Telephone FeaturesKey Telephone Features are available to DBS
key phones. DBS key phones are proprietary
digital sets that provide feature access through a
combination of feature keys and access codes.
DBS-70-700DBS Manual - Issued 8/1/95 ix
Introduction Section 700 - Operation
Purpose
Digital Single-Line
Telephone
(DSLT) Features
DSLT Features are available to Digital SingleLine Telephones. DSLTs provide digital audio
quality and limited feature key access in a
single-line set.
Single Line Telephone
Features
SLT Features are available to industry-standard
2500 sets. Since SLTs are not equipped with
feature keys, most features are accessed by
using the dialpad and/or the switchhook.
The purpose of this manual is to provide an overview of feature operation and
requirements. Where applicable, the following types of information are
provided for each feature.
Types of informationPurpose
DescriptionThe Description section provides an overview
of how the feature works and, in some cases,
what it is typically used for.
OperationThe Operation section includes step-by-step
instructions on how to use the feature.
Hardware Requirements
This section lists any special hardware that is
required to use the feature.
Related ProgrammingThe Related Programming section lists the pro-
gramming subsystems associated with the feature.
ConsiderationsThis section provides details on feature interac-
tions and limitations.
xDBS Manual - Issued 8/1/95DBS-70-700
Chapter 1. List of Features
The following tables list the features available with the DBS.
The following tables are included in this chapter:
TopicPage
System Features1-3
Attendant Features1-5
Extension Features1-6
DBS-70-700DBS Manual - Issued 8/1/95 1-1
Chapter 1. Features List Section 700 - Operation
1-2DBS Manual - Issued 8/1/95DBS-70-700
Section 700 - OperationChapter 1. Features List
Table 1-1. System Features
FeatureCPC-ACPC-AIICPC-B
3.03.13.23.
3
Account Codes: Non-verifiedxxxxxxxxxxxx
Account Codes: Verifiedxxxxxxxxx
Answer Supervision for Voice
Mail
Auto Day Modexxxxxxxx
Auto Set Relocationxxxxxxxxx
Background Musicxxxxxxxxxxxxxxx
Battery Backupxxxxxxxxxxxxxxx
Call Forward ID Code for
Voice Mail
Caller IDxxxx
Caller ID Auto DISAxxxx
Centrex/PBX Compatibilityxxxxxxxxxxxx
DID (Direct Inward Dialing )xxxxxxx
DID Night Ringing Assignmentxxxx
DID Delayed Ringingxxxx
DID/DNIS Flex. Ring Assign.xxxx
DID/DNIS Text Name Assign.xxxx
DID/DNIS To a Voice Mailboxxxx
DISAxxxxxxxxxxxxxxx
Direct Trunk Accessxxxxxxxxxxxxxxx
Distinctive Ringingxxxxxxxxx
Door Box (Extension Port)xx
Door Box (Trunk Port)xxxxxxxxxxxxxxx
DP/DTMF Stationsxxxxxxxxxxxxxxx
DP to DTMF Signal
Conversion
Hunting Priority for VAUsxxxxxxx
Independent Timersxxxxxxxxx
Internal Hold Tonexx
Key Bank Holdxxxxxxxxxxxxxxx
Least Cost Routingxxxxxxxxxxxxxxx
Music-on-Holdxxxxxxxxxxxxxxx
Night Servicexxxxxxxxxxxxxxx
Night Service (2 Modes)xx
Off-Premises Extensionxxxxxxxxxxxxxxx
Pagingxxxxxxxxxxxxxxx
xxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
6.
6
xxxxxxx
1
712
3.
1
456
6.
1
7
DBS-70-700DBS Manual - Issued 8/1/95 1-3
Chapter 1. Features List Section 700 - Operation
FeatureCPC-ACPC-AIICPC-B
3.03.13.23.
3
Power Failure Transferxxxxxxxxx
Remote Maintenancexxxxxxxxxxxxxxx
Sensorxxxxxxxxxxxxxxx
Station Class of Servicexxxxxxxxx
Station Hunting: Terminal and
Circular
Station Hunting: Terminal,
Distributed, Longest Idle
Station Message Detail
Recording (SMDR)
T1 Interfacexxxxx
Telephony Servicesxx
Toll Restrictionxxxxxxxxxxxxxxx
Trunk Groupsxxxxxxxxxxxxxxx
Trunk Name Assignmentxxxxxxxxxx
Trunk Queuingxxxxxxxxxxxxxxx
Universal Night Answerxxxxxxxxxxxxxxx
Voice Mail Ringingxxxxxxxxx
VAU (Voice Announce Unit)xxxxxxxxxxxxxxx
VAU Port Assignmentxxxxxxx
Walking TRS Class of Servicexxxxxxxxx
xxxxx
xxxxxxxxxxxxxxx
6.
6
1
xxx
712
3.
456
1
xxxxx
x
xxxxxx
x
6.
1
7
1-4DBS Manual - Issued 8/1/95DBS-70-700
Section 700 - OperationChapter 1. Features List
Table 1-2. Attendant Features
FeatureCPC-ACPC-A IICPC-B
3.03.13.23.
3
Alternate Attendantxxxxx
Attendant Assignment of
Speed Dialing
Attendant Busy Overridexxxxxxxxxx
Attendant Call Parkxxxxxxxxxxxxxxx
Attendant Control of Absence
Messages, Call Forwarding,
and DND
Attendant-Controlled Text
Assignment
Attendant Feature Packag exxx
Attendant Groupsxxxxxxxxxx
Dial Tone Disablexxxxxxxxxxxxxxx
DSS/72xxxxxxxx
Headset Operationxxxxxxxxxxxxxxx
One-Touch VM Transferxxxxxxx
Station Lockout Code
Assignment
System Time and Date Controlxxxxxxxxxxxxxxx
Traffic Measurementxxxxxxxxxxxxxxx
Voice Mail Transfer Keyxxxxxx
Walking COS Confirmationxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxx
xxxxxxxxxxxxxxx
6.
6
1
712
3.
456
1
xxxxx
x
xxxxxx
x
6.
1
7
DBS-70-700DBS Manual - Issued 8/1/95 1-5
Chapter 1. Features List Section 700 - Operation
Table 1-3. Extension Features
FeatureCPC-ACPC-A IICPC-B
3.03.13.23.
3
Absence Messag exxxxxxxxxxxxxxx
Auto Redialxx
Barge-In for Direct Linesxxxxxxx
Busy Overridexxxxxxxxxxxxxxx
Call Coverage Groupsxxxxxxxxxxxxxxx
Call Duration Displayxxxxxxxxxxxxxxx
Call Forwardingxxxxxxxxxxxxxxx
Call Hold: Exclusive and
System
Call Parkxxxxxxxxxxxxxxx
Call Pickup: Direct and
Group
Call Transfer: Blind and
Screened
Call Waitingxxxxxxxxxxxxxxx
Call Waiting/OHVA Text
Reply
Caller ID Call Logxxxx
Camp-onxxxxxxxxxxxxxxx
CO Line Key Trunk Accessxxxxxxxxxxxxxxx
Conference Callsxxxxxxxxxxxxxxx
Delayed Ringingxxxxxxxxxx
Dial “0” for Attendantxxxxxxxxxxxxxxx
Direct Trunk Accessxxxxxxxxxxxxxxx
Do-Not-Disturb (DND)xxxxxxxxxxxxxxx
EM/24 Consolexxxxxxxxxxxxxxx
Flexible Function (FF) Keysxxxxxxxxxxxxxxx
Handsfree Answerbackxxxxxxxxxxxxxxx
Handsfree Operationxxxxxxxxxxxxxxx
Headset Operationxxxxxxxxxxxxxxx
Hot Dial Padxxxxxx
Intercom Callingxxxxxxxxxxxxxxx
Last Number Redialxxxxxxxxxxxxxxx
Line Appearancesxxxxxxxxxxxxxxx
DSS/BLF Appearances:
(OHVA)
One-Touch Keysxxxxxxxxxxxxxxx
One-Touch VM Accessxxxxxxx
Onhook Dialingxxxxxxxxxxxxxxx
Pooled Trunk Accessxxxxxxxxxxxxxxx
Prime Line Preferencexxxxxxxxxxxxxxx
Private Linexxxxxxxxxxxxxxx
Reminder Callxxxxxxxxxxxxxxx
Ringing Line Preferencexxxxxxxxxxxxxxx
Saved Number Redialxxxxxxxxxxxxxxx
Speed Dial Linkingxxxxxxxxxxxxxxx
Speed Dialing: System and
Personal
Station Lockoutxxxxxxxxxxxxxxx
Trunk-to-Trunk Transfer
(Unsupervised Conference)
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
6.
6
xxxxxxxxxx
1
712
3.
1
456
6.
1
7
DBS-70-700DBS Manual - Issued 8/1/95 1-7
Chapter 1. Features List Section 700 - Operation
1-8DBS Manual - Issued 8/1/95DBS-70-700
Chapter 2. System Features
This chapter contains detailed descriptions of DBS System Features. System
Features are either available on a system-wide basis or aid in the overall
administration of the DBS.
This chapter covers the following topics:
TopicPage
Account Codes2-3
Answer Supervision for Voice Mail2-6
Auto Day Mode2-7
Auto Set Relocation2-9
Background Music2-11
Battery Backup2-12
Call Forward ID Code for Voice Mail2-13
Caller ID2-14
Caller ID Auto DISA2-15
Centrex/PBX Compatibility2-16
Direct Inward Dialing (DID)2-16
DID/DNIS Flexible Ring Assignments2-18
DID/DNIS Text Name Assignment2-19
DID/DNIS to a Voice Mailbox2-20
Direct Inward System Access (DISA)2-22
Direct Trunk Access2-24
Distinctive Ringing2-24
Door Box (Using Extension Adaptor)2-25
Door Box (Using Trunk Adaptor)2-27
DP/DTMF Stations2-29
DP to DTMF Signal Conversion2-29
Hunting Priority for VAUs2-30
Independent Timers2-32
Internal Hold Tone2-32
Least Cost Routing (LCR)2-33
Music-on-Hold2-34
Night Service2-35
Off-Premises Extension2-39
DBS-70-700DBS Manual - Issued 8/1/95 Page 2-1
Chapter 2. System FeaturesSection 700 - Operation
TopicPage
Paging2-39
Power Failure Transfer2-41
Remote Maintenance2-42
Station Class of Service2-45
Station Hunting2-46
Station Message Detail Recording (SMDR)2-51
T1 Interface2-54
Telephony Services2-56
Toll Restriction2-58
Trunk Groups2-61
Trunk Name Assignment2-62
Trunk Queuing2-63
Universal Night Answer2-64
Voice Mail Ringing2-65
VAU2-66
VAU Port Assignment2-67
Walking TRS Class of Service2-69
Page 2-2DBS Manual - Issued 8/1/95DBS-70-700
Section 700 - OperationChapter 2. System Features
Account Codes
You can assign account codes to clients to facilitate billing and to track call
dates and times, numbers called, and outside line numbers used. This
information is printed for each account on the SMDR record.
Non-Verified Account Codes
(CPC-A, CPC-AII, and CPC-B Versions prior to 3.1 and 6.0 and higher)
Description
In CPC-A and CPC-B Versions prior to 3.1, account codes are not verified.
With CPC-AII and with CPC-B Versions 6.0 and higher, account codes may
be verified or non-verified depending on system programming.
Non-verified account codes can be
extension programming.
With voluntary account codes, the user is not forced to enter an account code
before making a call. With forced account codes, the user must enter an
account code before accessing an outside line.
Non-verified account codes can be assigned to incoming and outgoing calls.
To assign an account code to an outgoing call, the user enters the account
code before making the call or during the call. To assign an account code to
an incoming call, the user enters the account code during the call.
To enter an Account Code before dialing:
1. Press the
• The phone issues intercom dial tone.
• The
2. Press the
ON/OFF
ON/OFF
AUTO
key.
LED lights.
key, then press “#.”
forced
or
voluntary
, depending on
• “Enter Account #” appears on the display.
• If you are using a Single Line Telephone (SLT) or Digital Single Line
Telephone (DSLT), dial “#7.”
3. Enter the Account Code (up to 10 digits).
4. Press “#.”
DBS-70-700DBS Manual - Issued 8/1/95 Page 2-3
Chapter 2. System FeaturesSection 700 - Operation
“Entered Account #” appears on the display.
5. Press a vacant CO key or dial a trunk access code.
6. Dial the telephone number.
To enter an Account Code during an outside call:
1. Press the
2. Press “#.”
“Enter Account #” appears on the display.
3. Enter the Account Code (up to 10 digits).
The Account Code entered appears on the display.
4. Press “#.”
Hardware Requirements
• An SMDR printer or external call accounting system is required to collect
account code records.
Related Programming
• FF3 (Extension): Forced Account Codes
AUTO
key.
Considerations
• SLTs cannot assign account codes during a call.
Verified Account Codes
(CPC-AII and CPC-B, Version 3.1 or higher)
Description
Extensions with the Verified Account Codes feature
from making outside calls without the user first entering a valid Account
Code. After a valid Account Code is entered, the Toll Restriction Service
(TRS) type assigned to the code is substituted for the extension TRS type,
thus temporarily allowing calls based on the new TRS type.
Page 2-4DBS Manual - Issued 8/1/95DBS-70-700
enabled
are restricted
Section 700 - OperationChapter 2. System Features
Operation
Extensions with the Verified Account Codes feature
outside calls based on the TRS type assigned to the extension. If a user wishes
to place a call that would normally be restricted at the extension, the user can
enter a valid Verified Account Code to upgrade the TRS type assigned to the
extension.
1. Pick up the handset.
The phone issues intercom dial tone.
2. Dial “#11.”
3. Enter the four-digit Account Code.
4. Press “#.”
The phone issues intercom dial tone.
5. Press an available CO key or dial a trunk access code.
The phone issues outside dial tone.
disabled
can place
6. Dial the telephone number.
The Verified Account Code TRS type remains in effect until the call is
completed.
Related Programming
• FF1 (System): Verified Forced Account Codes
• FF1 (System): Toll Restriction for Verified Forced Account Codes
• FF3 (Extension): Verified Forced Account Codes
• FF7 (TRS): Toll Restrictions
Hardware Requirements
• An SMDR printer or external call accounting system is required to collect
account code records.
Considerations
• Verified account codes are for outgoing calls only.
DBS-70-700DBS Manual - Issued 8/1/95 Page 2-5
Chapter 2. System FeaturesSection 700 - Operation
• The maximum number of verified account codes is 100.
• Each verified account code must consist of 4 digits.
• “0000” cannot be used for a verified account code.
• Verified account codes do not override station lockout.
• Verified account codes do not override Least Cost Routing (LCR) settings.
• With CPC-AII and CPC-B Version 3.1 to 5.04, non-verified account codes
can be used. However, they can only be used on a voluntary basis. Forced
non-verified
account codes are not available with CPC-B 3.1 to 5.04.
Answer Supervision for Voice Mail
(CPC-AII and CPC-B Version 5.0 or higher)
Description
Operation
This feature allows the DBS to send an answer signal to third-party voice
mail systems.
In previous releases, a third-party voice mail did not receive a signal to
indicate that a DBS extension had answered. To determine that the extension
had answered, the voice mail system had to wait until it stopped receiving
ringback tone. Waiting for the ringback to stop often delayed connection
times for calls from voice mail to extensions. Sending an answer signal
provides quicker response time between the DBS and the voice mail system.
The following programming can be performed from an attendant phone or
any other phone that has entered the programming access code.
To assign an answer signal code:
1. Press the
ON/OFF
key.
• The phone issues intercom dial tone.
• The
2. Press the
3. Dial “
Page 2-6DBS Manual - Issued 8/1/95DBS-70-700
ON/OFF
PROG
#94
.”
LED lights.
key.
Section 700 - OperationChapter 2. System Features
4. Enter the Answer Signal Code (1 to 5 digits).
5. Press the
To view an answer signal code:
1. Press the
2. Press the
3. Dial “#94.”
Considerations
• The digits used for the answer signal code are determined by the
• If the called extension does not answer and is forwarded to voice mail, the
• During transmission of the answer signal code, other DTMF digits and
HOLD
ON/OFF
CONF
requirements of the voice mail system.
DBS sends a call forward ID code back to the voice mail system.
functions from the DBS extension are ignored.
key.
key.
key.
Auto Day Mode
(CPC-AII prior to 7.0 and CPC-B Version 4.0 to 6.11)
Description
Auto Day Mode allows the DBS to go into day mode automatically.
The DBS can also be programmed to go into night mode automatically (see
“Night Service,” page 2-35).
If only one of the auto modes is turned on, the
the auto mode. For instance, if night mode has been activated automatically,
the attendant must press the
If only one of the auto modes is turned on, the
to go into an auto mode before the scheduled time.
If both auto day and auto night modes are turned on, the attendant
key
cannot
be used.
NIGHT
NIGHT
key to go into day mode.
NIGHT
key is used to turn off
key can also be used
NIGHT
DBS-70-700DBS Manual - Issued 8/1/95 Page 2-7
Chapter 2. System FeaturesSection 700 - Operation
Related Programming
• FF1 (System): Automatic Day Mode Start Time
• FF1 (System): Automatic Night Mode Start Time
Considerations
• If both auto modes are set, the starting times must differ by at least one
hour.
• When one auto mode is turned on, the mode cannot be reset by the
key until 3 minutes after the auto mode is activated. (When both auto
modes are set, the
• If a
NIGHT
NIGHT
key is not assigned, the access code #52 can be used instead.
key cannot be used.)
Auto Day Mode
(CPC-B Version 7.0 or higher and CPC-A II Version 7.0 and higher)
Description
Auto Day Mode allows the DBS to go into day mode automatically.
The DBS can also be programmed to go into night mode automatically (see
“Night Service,” page 2-37).
If only one of the auto modes is turned on, the
toggle key or the
mode. For instance, if
attendant must press the
to go into day mode. (Note: You must wait at least 3 minutes after the
automatic mode is activated before manually changing the mode. Otherwise
the system will immediately revert back to the automatic mode.)
DAY, NIGHT1
NIGHT1
DAY/NIGHT1/NIGHT2
mode has been activated automatically, the
, or
NIGHT2
DAY/NIGHT1/NIGHT2
NIGHT
is used to turn off the auto
toggle key or the
DAY
key
If only one of the auto modes is turned on, the
toggle key or the
an auto mode before the scheduled time. If auto day and both auto night
modes are turned on, the manual mode keys
DAY, NIGHT1
, or
NIGHT2
DAY/NIGHT1/NIGHT2
key can also be used to go into
can
be used.
Related Programming
• FF1 (System): Auto Day Mode Start Timer
• FF1 (System): Auto Night1 Mode Start Timer
Page 2-8DBS Manual - Issued 8/1/95DBS-70-700
Section 700 - OperationChapter 2. System Features
• FF1 (System): Auto Night2 Mode Start Timer
Considerations
• If all auto modes are set, the starting times must differ by at least one hour.
• When one auto mode is turned on, the mode cannot be reset by the NIGHT
key until 3 minutes after the auto mode is activated. (When all auto modes
are set, the mode keys cannot be used.)
• If mode keys are not set, the access codes #520 (DAY/NIGHT1/NIGHT2
toggle), #521 (DAY), #522 (Night1) or #523 (Night2) can be used instead.
Auto Set Relocation
(CPC-AII and CPC-B Version 3.1 or higher)
Description
Operation
Auto Set Relocation can be used to relocate the program settings of one
extension to another extension.
Auto Set Relocation is commonly used when extension users want to trade
work areas. For example, if Extensions “A” and “B” are going to switch
office locations, Auto Set Relocation enables them to switch telephone
settings without re-programming.
Before a phone can be relocated, it must be assigned an Auto Set Relocation
code. See “Related Programming” for the program address used to set up the
Auto Set Relocation Code.
The following example illustrates how the program settings for extensions
200 and 300 could be switched.
To Transfer Extension Settings from 200 to 300:
1. At extension 300, pick up the handset.
2. Press “#10.”
3. Dial extension number 200.
DBS-70-700DBS Manual - Issued 8/1/95 Page 2-9
Chapter 2. System FeaturesSection 700 - Operation
4. Enter the four-digit auto set relocation code assigned to extension 200.
5. Replace the handset.
• All programmed extension features and TRS settings from 200 are
transferred to 300.
• Extension 300 are placed out of service.
To Reactivate Extension 300:
1. Unplug the extension cable from 300.
2. Reconnect the cable.
Extension 300 assumes all extension features, TRS, and LCR settings that
were initially assigned to 200.
Related Programming
• FF3 (Extension): Auto Set Relocation Code
Considerations
• The following types of data can be transferred using this feature:
• Settings may not be transferred between extensions of different types. In
• Attendant 1 is excluded from this feature.
- TRS type settings
- Ring settings (trunk line, remote ringing, day/night, DID)
- FF key data
- Extension numbers and names
- System call forward settings
- All settings and data defined by programming.
other words, an SLT and a KTEL cannot exchange program settings.
Page 2-10DBS Manual - Issued 8/1/95DBS-70-700
Section 700 - OperationChapter 2. System Features
Background Music
(All Versions)
Description
If your system is set up to provide Background Music, music can be played
from the speakers of idle telephones. If a call is made to an extension
receiving Background Music, the music stops and the phone rings.
Background Music is also interrupted when the phone goes offhook.
The system can also provide music-on-hold using the Background Music
source or a separate music source. If Music-on-Hold is provided, callers
automatically hear music when they are placed on hold. (See page 2-34 for
more information on Music-on-Hold.)
Operation
To turn Background Music on:
1. Press the
• The phone issues intercom dial tone.
• The
2. Dial “#53.”
“BGM ON” appears on the display.
3. Press the
The
To turn Background Music off:
1. Press the
• The phone issues intercom dial tone.
• The
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
key.
LED lights.
key.
LED goes off.
key.
LED lights.
2. Dial “#53.”
“BGM OFF” appears on the display.
3. Press the
DBS-70-700DBS Manual - Issued 8/1/95 Page 2-11
ON/OFF
key.
Chapter 2. System FeaturesSection 700 - Operation
• The
• The date and time appear on the display.
ON/OFF
Related Programming
• FF1 (System) Extension Class of Service Setting (CPC-AII and CPC-B 3.1
or higher)
• FF3 (Extension) Extension Class of Service Assignment (CPC-AII CPC-B
3.1 or higher)
Hardware Requirements
• The music source must be purchased separately. It is not provided with the
DBS.
• If a single music source is used for both Music-on-Hold and Background
Music, the music source connects to the CN5 on the DBS. If a separate
music source is used for background music, it connects directly to the SCC
card. See
set the option straps.
Installation (Section 300)
LED goes off.
for instructions. Be sure to corrrectly
• The input impedance for the music source is 10k ohms.
• The maximum input level is 10 dB.
Important:
Composers, Authors, and Publishers (ASCAP) or similar organizations to
transmit radio or recorded music through the Music-On-Hold feature.
Panasonic Communications & Systems Company, its distributors, and
affiliates assume no liability should users of Panasonic equipment fail to
obtain such a license.
A license may be required from the American Society of
Battery Backup
(All Versions)
Description
The DBS two 12-volt batteries for battery backup. (Some DBS 72 and 96
systems use four older-style 6-volt batteries.) The backup batteries are
connected in a series circuit, using cables provided with the DBS. With
maximum traffic, the backup batteries last up to 40 minutes for the DBS 40
and 72, and up to 30 minutes for the DBS 96. The backup batteries should be
replaced about every 3 years.
Page 2-12DBS Manual - Issued 8/1/95DBS-70-700
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