Panasonic KX-TD500 User manual

DIGITAL SUPER HYBRID SYSTEM
Installation Manual
Model No. KX-TD500
Please read this manual before connecting
the Digital Super Hybrid System.

System Components
2
Shelf
Extension
Cards
Trunk
Cards
Resource
Cards
Other Cards
Model
KX-TD500
KX-TD520
KX-TD50170
KX-TD50172
KX-TD50175
KX-T96184
KX-T96188
KX-TD50180
KX-TD50288
KX-TD50290
KX-T96191
KX-TD50197
KX-T96161
KX-TD193
KX-TD50104
KX-TD50105
KX-TD50189
Description
Basic Shelf
Expansion Shelf
DHLC (Digital Hybrid Line Circuit) Card
DLC (Digital Proprietary ITS Line Circuit) Card
ESLC (Enlarged-Single Line Telephone Circuit with Message
Waiting) Card
E&M Card
E-1 Digital Trunk Card
ELCOT (Enhanced Loop Start Central Office Trunk) Card
BRI (ISDN Basic Rate Access Interface) Card
PRI30 (ISDN Primary Rate Access Interface) Card
DISA (Direct Inward System Access Trunk) Card
ERMT (Enhanced Remote Circuit) Card
DPH (Doorphone Circuit) Card
Caller ID Card
TSW-CONF (TSW Conference Expansion) Card
DOHCA (OHCA for Digital Telephone) Card
Pay Tone Card
Thank you for purchasing the Panasonic Model
KX-TD500, Digital Super Hybrid System.
System Components Table

System Components
3
Analog
Proprietary
Telephone
(APT)
Digital
Proprietary
Telephone
(DPT)
Proprietary
Equipment
Model
KX-T7320
KX-T7330
KX-T7350
KX-T7220
KX-T7230
KX-T7235
KX-T7250
KX-T7425
KX-T7433
KX-T7436
KX-T7450
KX-T7240
KX-T7340
KX-T7440
KX-T7441
KX-T30865
KX-T7090
KX-A46
Description
APT with SP-PHONE (12-CO)
APT with SP-PHONE, 1-Line Display (12-CO)
APT with MONITOR (12-CO)
DPT with SP-PHONE (24-CO)
DPT with SP-PHONE, 2-Line Display (24-CO)
DPT with SP-PHONE, 6-Line Display (12-CO)
DPT with MONITOR (6-CO)
DPT with SP-PHONE (24-CO)
DPT with SP-PHONE, 3-Line Display (24-CO)
DPT with SP-PHONE, 6-Line Display (24-CO)
DPT with MONITOR (12-CO)
DSS Console (32-DSS, 16-PF)
DSS Console (32-DSS, 16-PF)
DSS Console (64-DSS)
DSS Console with ANSWER and RELEASE buttons (48-DSS)
Doorphone
Headset
Battery Adapter
[Note]
CO :CO line access button
DSS :Direct Station Selection button
PF :Programmable Feature button

Important Information
4
This equipment should be used on PSTN lines requiring 2-wire Loop calling unguarded clearing
with Loop Disconnect or DTMF address signaling.
The equipment must be connected to direct extension lines and a payphone should not be con-
nected as an extension.
Operation in Power Failure
In the event of a power failure, single line telephones (SLTs) will be directly connected to spe-
cific CO lines. Refer to Section 2.9 “Auxiliary Connection for Power Failure Transfer” for fur-
ther information.
• Set the Dialing Mode (Tone or Pulse) of your telephone, according to the CO line.
• 114 and 000 can be dialed on the apparatus for the purpose of making outgoing calls to the
emergency (114) and (000) service.
Satisfactory performance can not be guaranteed for every allowed combination of host and sub-
sidiary apparatus.
114 and 000 can be dialed on the apparatus after accessing the CO line for the purpose of mak-
ing outgoing calls to the emergency (114) and (000) service.
During dialing, this apparatus may tinkle the bells of other telephones using the same line. This
is not a fault and we advise you not to call Fault Repair Service.
‘Prevention of access by user. This apparatus is intended to be accessible only to authorized
personnel. This apparatus must be installed in a locked room or similar environment, such that
user access is prevented. Failure to prevent such user access will invalidate any approval given
to this apparatus.’
Caution:
Do not push the PAUSE button more than twice following the initial access digit (or digits).
Failure to comply with this requirement may result in unsatisfactory operation.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer's instructions.

Attention
5
• The apparatus is designed to be installed and operated under controlled conditions
of ambient temperature and a relative humidity not greater than 60%.
• Avoid installing the apparatus in damp or humid environments, such as bathrooms
or swimming pools.
• The apparatus shall not be exposed to dripping or splashing.
• Keep the unit away from heating appliances and electrical noise generating devices
such as fluorescent lamps, motors and televisions. These noise sources can inter-
fere with the performance of the Digital Super Hybrid System.
• This unit should be kept free of dust, moisture, high temperature (more than 40˚C /
104˚F) and vibration, and should not be exposed to direct sunlight.
• Never attempt to insert wires, pins, etc. into the vents or other holes of this unit.
• If there is any trouble, disconnect the unit from the telephone line. Plug the tele-
phone directly into the telephone line. If the telephone operates properly, do not
reconnect the unit to the line until the trouble has been repaired. If the telephone
does not operate properly, chances are that the trouble is in the telephone system,
and not in the unit.
• Do not use benzine, thinner, or the like, or any abrasive powder to clean the cabi-
net. Wipe it with a soft cloth.
WARNING
WHEN A FAILURE OCCURS WHICH RESULTS IN THE INTERNAL PARTS
BECOMING ACCESSIBLE, DISCONNECT THE POWER SUPPLY CORD
IMMEDIATELYAND RETURN THIS UNIT TO YOUR DEALER.
DISCONNECT THE TELECOM CONNECTION BEFORE DISCONNECTING
THE POWER CONNECTION PRIOR TO RELOCATING THE EQUIPMENT,
AND RECONNECT THE POWER FIRST.
THIS UNIT IS EQUIPPED WITH AN EARTHING CONTACT PLUG. FOR
SAFETY REASONS THIS PLUG MUST ONLY BE CONNECTED TO AN
EARTHING CONTACT SOCKET WHICH HAS BEEN INSTALLED
ACCORDING TO REGULATIONS.
THE POWER SOCKET WALL OUTLET SHOULD BE LOCATED NEAR
THIS EQUIPMENT AND BE EASILY ACCESSIBLE.
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS PROD-
UCT TO RAIN OR MOISTURE.

Attention
6
The serial number of this product may be found on the label affixed to the bottom
of the unit. You should note the serial number of this unit in the space provided
and retain this book as a permanent record of your purchase to aid in identifica-
tion in the event of theft.
MODEL NO.:
SERIAL NO.:
DATE OF PURCHASE
NAME OF DEALER
DEALER’S ADDRESS
For your future reference

7
Introduction
This Installation Manual is designed to serve as an overall technical reference for the
Panasonic Digital Super Hybrid System, KX-TD500. It provides instructions for
installing the hardware, and programming the system using the Maintenance
Console software for a PC.
The Structure of This Manual
This manual contains the following sections:
Section 1 System Outline
Provides general information on the system including system capacity and
specifications.
Section 2 Installation
Contains the basic system installation and wiring instructions, as well as how to
install the optional cards and units including environmental requirements.
Section 3 PC Programming Guide
Explains the structure of the Maintenance Console software and the basic
information you need.
Section 4 System Programming
Provides step-by-step instruction for performing system programming using the
Maintenance Console software for a PC.
Section 5 Utility
Describes the information necessary for testing, monitoring and maintaining the KX-
TD500 System using the Maintenance Console software for a PC.
Section 6 Lists
Lists tones/ring tones and default values of System Programming.
Section 7 Troubleshooting
Provides information for system and telephone troubleshooting.
About the Other Manuals
Along with this Installation Manual, the following manuals are available:
Features Guide
Describes every basic, optional and programmable features of the KX-TD500
System in alphabetical order.
User Manual
Designed for users of Digital Super Hybrid System, KX-TD500.
The focus is Digital Proprietary Telephones (DPTs), Digital DSS Consoles, Single
Line Telephones (SLTs) and their features.

Contents
8
Section 1 System Outline
1.1 System Highlights ............................................................................ 1-2
1.2 System Construction ........................................................................ 1-4
1.2.1 Basic System .......................................................................... 1-4
1.2.2 System Expansion .................................................................. 1-5
1.2.3 System Capacity...................................................................... 1-7
1.3 System Connection Diagram .......................................................... 1-9
1.4 Service Cards Description................................................................ 1-12
1.4.1 Extension Cards ...................................................................... 1-12
1.4.2 CO Trunk Cards...................................................................... 1-12
1.4.3 Resource Cards........................................................................ 1-13
1.4.4 Other Cards ............................................................................ 1-14
1.5 Proprietary Telephones .................................................................... 1-15
1.6 Specifications .................................................................................... 1-16
1.6.1 General Description ................................................................ 1-16
1.6.2 Characteristics ........................................................................ 1-17
Section 2 Installation
2.1 Before Installation ............................................................................ 2-2
2.1.1 Precautions.............................................................................. 2-2
2.1.2 Slot Construction .................................................................... 2-4
2.1.3 Guide Plate.............................................................................. 2-5
2.1.4 Amphenol 57JE type connector.............................................. 2-6
2.2 Installation of Shelf .......................................................................... 2-7
2.2.1 Basic Shelf .............................................................................. 2-7
2.2.2 Expansion to 2-Shelf System.................................................. 2-9
2.2.3 Expansion to 3-Shelf System.................................................. 2-17
2.2.4 Ground Wiring ........................................................................ 2-23
2.2.5 Fixing on the Floor.................................................................. 2-24
2.3 Factory-Installed Card/Unit ............................................................ 2-26
2.3.1 CPU Card................................................................................ 2-26
2.3.2 TSW Card................................................................................ 2-26
2.3.3 Power Unit .............................................................................. 2-26
2.4 Extension Cards................................................................................ 2-27
2.4.1 DHLC Card (KX-TD50170) .................................................. 2-27
2.4.2 DLC Card (KX-TD50172)...................................................... 2-28
2.4.3 ESLC Card (KX-TD50175).................................................... 2-29
2.4.4 Maximum cabling distance of the extension line cord
(twisted cable) ........................................................................ 2-30
2.4.5 Extension Connection of KX-A204 (Cable) / KX-A205
(Clip Terminal)........................................................................ 2-31
2.4.6 Cable Pin Numbers for Extension Lines ................................ 2-32

Contents
9
2.4.7 Parallel Connection of the Extensions.................................... 2-36
2.4.7.1 Parallel Connection - APT.......................................... 2-36
2.4.7.2 Parallel Connection - DPT.......................................... 2-37
2.4.8 Extra Device Port (XDP) Connection .................................... 2-38
2.5 Trunk Cards...................................................................................... 2-39
2.5.1 E&M Card (KX-T96184)........................................................ 2-40
2.5.2 E-1 Digital Trunk Card (KX-T96188).................................... 2-43
2.5.3 ELCOT Card (KX-TD50180) ................................................ 2-44
2.5.4 BRI Card (KX-TD50288) ...................................................... 2-45
2.5.5 PRI30 Card (KX-TD50290).................................................... 2-46
2.5.6 Central Office Line Connection of KX-A204 (Cable)
/ KX- A205 (Clip Terminal).................................................... 2-47
2.5.7 Cable Pin Numbers for CO Lines .......................................... 2-48
2.5.8 E&M Line Connection of KX-A240 (Cable) /
KX-A205 (Clip Terminal) ...................................................... 2-50
2.5.9 Cable Pin Numbers for E&M Lines ...................................... 2-51
2.6 Resource Cards ................................................................................ 2-53
2.6.1 DISA Card (KX-T96191)........................................................ 2-53
2.6.2 ERMT Card (KX-TD50197) .................................................. 2-53
2.7 Other Cards ...................................................................................... 2-54
2.7.1 DPH Card (KX-T96161) ........................................................ 2-54
2.7.2 Caller ID Card (KX-TD193) .................................................. 2-58
2.7.3 Pay Tone Card (KX-TD50189) .............................................. 2-59
2.7.4 TSW Conference Expansion Card (KX-TD50104)................ 2-60
2.7.5 TSW OHCA for DPT Card (KX-TD50105) .......................... 2-61
2.8 Peripheral Equipment...................................................................... 2-62
2.8.1 Battery Adaptor (KX-A46) .................................................... 2-62
2.8.2 External Pager (Paging Equipment)........................................ 2-64
2.8.3 External Music Source............................................................ 2-65
2.8.4 Personal Computer/Printer...................................................... 2-66
2.9 Auxiliary Connection for Power Failure Transfer ........................ 2-70
2.10 Starting Up the KX-TD500 System ................................................ 2-72
2.10.1 System Power-Up Procedure .................................................. 2-72
2.10.2 CPU Rotary-Switch Features.................................................. 2-73
2.10.3 CPU RAM Test ...................................................................... 2-76
2.11 Lightning Protectors ........................................................................ 2-77

Contents
10
Section 3 Maintenance Console Guide
3.1 Installing PC Programming Software ............................................ 3-2
3.1.1 System Requirements................................................................ 3-2
3.1.2 Starting Setup............................................................................ 3-2
3.2 Structure of the Maintenance Console .......................................... 3-6
3.3 Basic Operation ................................................................................ 3-8
3.3.1 Main Menu Screen.................................................................... 3-8
3.3.2 Setup Dialog.............................................................................. 3-10
3.3.3 Files .......................................................................................... 3-11
3.4 System Administration .................................................................... 3-12
3.4.1 On-site Administration (Local Connection).............................. 3-13
3.4.2 Remote Administration (Remote Connection).......................... 3-14
3.5 Operational Mode ............................................................................ 3-16
3.5.1 Interactive Programming - On-site............................................ 3-17
3.5.2 Interactive Programming- Remote............................................ 3-18
3.5.3 Batch Programming .................................................................. 3-19
3.6 Backup .............................................................................................. 3-20
3.6.1 Download (from PBX to PC).................................................... 3-21
3.6.2 Upload (from PC to PBX) ........................................................ 3-22
3.7 End-User License Agreement .......................................................... 3-23
Section 4 System Programming
4.1 Configuration .................................................................................... 4-2
4.1.1 Slot Assignment ...................................................................... 4-3
4.1.1.1 Properties (DHLC/ESLC/DLC)................................ 4-5
4.1.1.2 Properties (ELCOT).................................................. 4-7
4.1.1.3 Properties (ERMT).................................................... 4-9
4.1.1.4 CPU Card Information.............................................. 4-10
4.1.1.5 TSW Card Configuration.......................................... 4-11
4.1.2 Trunk Port Assignment .......................................................... 4-13
4.1.3 Extension Port Assignment .................................................... 4-14
4.1.4 VPS (DPT) Port Assignment .................................................. 4-17
4.1.5 DISA Port Assignment............................................................ 4-19
4.2 System ................................................................................................ 4-20
4.2.1 Tenant...................................................................................... 4-21
4.2.2 Numbering Plan ...................................................................... 4-24
4.2.3 Class of Service (COS) .......................................................... 4-30
4.2.3.1 Trunk Group Setting ................................................. 4-33
4.2.4 System Timer .......................................................................... 4-34
4.2.4.1 System Timer 1/2...................................................... 4-34
4.2.4.2 System Timer 2/2...................................................... 4-37
4.2.5 Local Hunt Sequence.............................................................. 4-39
4.2.6 Trunk to Trunk Restriction...................................................... 4-40

Contents
11
4.2.7 System Option ........................................................................ 4-41
4.2.7.1 System Option 1/4 .................................................... 4-41
4.2.7.2 System Option 2/4 .................................................... 4-43
4.2.7.3 System Option 3/4 .................................................... 4-45
4.2.7.4 System Option 4/4 .................................................... 4-47
4.3 Group ................................................................................................ 4-49
4.3.1 Trunk Group............................................................................ 4-50
4.3.2 Extension Group .................................................................... 4-53
4.3.3 Paging Group .......................................................................... 4-56
4.3.4 DIL1:N Group ........................................................................ 4-57
4.3.5 OGM Group............................................................................ 4-58
4.4 Line .................................................................................................... 4-60
4.4.1 Trunk Line .............................................................................. 4-61
4.4.2 Extension Line ........................................................................ 4-65
4.4.2.1 Flexible CO Key Assignment................................... 4-69
4.4.2.2 Flexible PF Key Assignment .................................... 4-70
4.4.3 DSS Console .......................................................................... 4-71
4.4.3.1 Flexible DSS Key Assignment ................................ 4-72
4.4.3.2 Flexible PF Key Assignment .................................... 4-73
4.4.4 Doorphone .............................................................................. 4-74
4.4.5 External Paging ...................................................................... 4-75
4.5 Features.............................................................................................. 4-76
4.5.1 System Speed Dialing ............................................................ 4-77
4.5.2 Phantom Extension ................................................................ 4-78
4.5.3 Emergency Dial Code ............................................................ 4-79
4.5.4 Quick Dialing.......................................................................... 4-80
4.5.5 Account Code.......................................................................... 4-81
4.5.6 Special Carrier Code .............................................................. 4-82
4.5.7 Waiting Second Dial Tone Code ............................................ 4-83
4.5.8 Absent Message ...................................................................... 4-84
4.5.9 DISA/TIE User Code.............................................................. 4-85
4.5.10 Voice Mail Integration ............................................................ 4-86
4.5.10.1 Voice Mail Integration 1/2........................................ 4-86
4.5.10.2 Voice Mail Integration 2/2........................................ 4-89
4.5.11 Caller ID Modification............................................................ 4-91
4.5.12 Caller ID Registration ............................................................ 4-93
4.5.13 UCD Time Table .................................................................... 4-94
4.6 Toll Restriction.................................................................................. 4-95
4.6.1 TRS Deny Code...................................................................... 4-96
4.6.2 TRS Exception Code .............................................................. 4-97
4.7 ARS (Automatic Route Selection) .................................................. 4-98
4.7.1 Time Table .............................................................................. 4-99

Contents
12
4.7.2 Leading Digits Table .............................................................. 4-100
4.7.3 Routing Plan............................................................................ 4-101
4.7.4 Digit Modification .................................................................. 4-102
4.8 Private Network................................................................................ 4-103
4.8.1 Routing Table.......................................................................... 4-104
4.9 DID (Direct Inward Dialing) Dial .................................................. 4-106
4.9.1 DID Dial Registration ............................................................ 4-107
4.10 Maintenance ...................................................................................... 4-108
4.10.1 External Modem...................................................................... 4-109
4.10.2 SMDR .................................................................................... 4-112
4.10.3 Power Failure Transfer............................................................ 4-114
4.10.4 System Parameters .................................................................. 4-115
Section 5 Utility
5.1 Introduction ...................................................................................... 5-2
5.1.1 Structure of Utility Program...................................................... 5-2
5.2 Diagnosis............................................................................................ 5-3
5.2.1 Card /Port Test (On-line diagnosis) .......................................... 5-4
[Card Test] ................................................................................ 5-7
[Port Test].................................................................................. 5-8
[DTMF-G/R Test] .................................................................... 5-9
[Loop Back Test] ...................................................................... 5-10
[CO-Extension Path Test] ........................................................ 5-11
[PITS Path Test]........................................................................ 5-13
5.2.2 CPU Test (Off-line diagnosis) .................................................. 5-14
5.2.3 TSW Test (Off-line diagnosis) .................................................. 5-16
[TSW Test]................................................................................ 5-17
[Expansion Conference Card Test] .......................................... 5-18
[Digital OHCA Card Test] ........................................................ 5-19
5.3 Traffic Information .......................................................................... 5-21
5.3.1 Station........................................................................................ 5-23
5.3.2 Trunk Group.............................................................................. 5-24
5.3.3 Operator .................................................................................... 5-25
5.3.4 UCD (Uniform Call Distribution) ............................................ 5-26
5.3.5 OGM.......................................................................................... 5-27
5.4 System Status .................................................................................... 5-28
5.4.1 System Status Screen ................................................................ 5-28
5.4.2 Card Status Screen .................................................................... 5-30
5.4.3 Port Status Screen...................................................................... 5-31
5.5 Error Log .......................................................................................... 5-32
5.6 Log File .............................................................................................. 5-34

Contents
13
Section 6 Lists
6.1 Tones/Ring Tones .............................................................................. 6-2
6.2 Default Values.................................................................................... 6-4
Section 7 Troubleshooting
7.1 Troubleshooting ................................................................................ 7-2
7.1.1 Installation ................................................................................ 7-2
7.1.2 Connection ................................................................................ 7-3
7.1.3 Operation .................................................................................. 7-4

Section 1
System Outline
This section provides general information on the system,
including system capacity and specifications.

1.1 System Highlights
1-2 System Outline
Automatic Route Selection (ARS)
Automatically selects the pre-programmed least expensive route
for outgoing toll calls.
Caller ID Allows the extension user to see the name or telephone number of
a caller on the telephone display before answering the call.
Digital Proprietary Telephones (DPT)
The system supports a wide variety of digital proprietary tele-
phones which cover the range from a monitor set to a large
display handsfree version.
EXtra Device Port (XDP)
Each extension port on the DHLC card supports the connection of
a digital proprietary telephone and a single line device. The
devices have different extension numbers and are treated as two
completely different extensions.
Paralleled Telephone Connection
Each extension port on the HLC or DHLC card supports the paral-
lel connection of a proprietary telephone and a single line device.
They share the same extension number and are considered by the
system to be one extension.
Remote Station Lock Control
Allows the Manager or an Operator to lock an extension so that
outgoing calls cannot be made.
Super Hybrid System This system supports the connection of digital and analog
proprietary telephones, DSS Consoles and single line devices such
as single line telephones, facsimiles, and data terminals.
Trunk (CO Line) Answer From Any Station (TAFAS)
Ringing occurs over the external paging system; call can be
answered from any station.
Uniform Call Distribution (UCD)
Allows an incoming calls to be distributed uniformly to a specific
group of extensions called UCD Group.

1.1 System Highlights
System Outline 1-3
Voice Mail Integration The system supports Voice Processing Systems with in-band
DTMF signaling as well as DPT integration. The Panasonic Voice
Processing System provides automated attendant, voice mail,
interview and custom services.

1.2.1 Basic System
Basic System consists of one Shelf called Basic Shelf and it can be
equipped with up to 192 lines (including Extensions and CO lines).
Basic Shelf A Basic Shelf is always required. It contains its own power supply
and 14 mounting spaces called “Slots”. The CPU card and the
TSW card are installed at factory in Basic Slot 1 and Basic Slot 2
respectively. The remaining 12 slots provide mounting space for
various cards that can be used. Any optional service card can be
mounted in any one of these 12 slots. So these slots are called
“Free Slot”.
Construction of Basic Shelf
1.2 System Construction
1-4 System Outline
POWER
ON 1
FUSE
OFF
DIGITAL SUPER HYBRID SYSTEM RUN OFF LINE ALARM
Basic System
P
O
W
E
R
F
S
1
F
S
2
F
S
3
F
S
4
F
S
5
F
S
6
F
S
7
F
S
8
F
S
9
F
S
10
F
S
11
F
S
12
B
S
1
B
S
2

System Outline 1-5
1.2 System Construction
1.2.2 System Expansion
Building Block System The KX-TD500 system can consist of one, two, or three shelves
(Basic and Expansion 1,2). Each shelf contains its own power
supply.
Expansion Shelf An optional Expansion Shelf consists of its own power supply and
14 Free Slots for mounting any optional cards. It can be equipped
with up to 224 lines (including Extensions and CO lines).
Construction of Expansion Shelf (1 and 2)
P
O
W
E
R
F
S
1
F
S
2
F
S
3
F
S
4
F
S
5
F
S
6
F
S
7
F
S
8
F
S
9
F
S
10
F
S
11
F
S
12
F
S
13
F
S
14

1.2 System Construction
1-6 System Outline
System Expansion The KX-TD500 system’s capacity can be expanded by installing
up to two Expansion Shelves on the Basic Shelf.
Fully expanded system (Basic Shelf + Expansion Shelf 1 +
Expansion Shelf 2) is called “3-Shelf System.”
3-Shelf System
DIGITAL SUPER HYBRID SYSTEM RUN OFF LINE ALARM

1.2 System Construction
System Outline 1-7
1.2.1 System Capacity
The KX-TD500 system can be equipped with up to 512 ports, if expand-
ed to a 3-Shelf System. A Max.192 of CO lines and 448 extensions are
available and the total of them should be less than 512 ports.
Note: You cannot assign any cards which exceed the system capacity.
When the system starts up with excess cards by the automatic
configuration mode, they will be ignored.
Refer to Section 2.10.2 “CPU Rotary Switch Features” for further
information.
Port Limits of Extension/CO Lines
Maximum number of Extensions (PT/SLT) and CO lines allowable
per system/shelf is as shown below.
Note: • The number of PTs (Analog/Digital Proprietary Telephones) should be
less than 128 per shelf.
• The number of SLTs (Single Line Telephones) should be less than 160
per shelf.
Port Limits of Other Terminals
Maximum number of other terminals allowable per system is as
shown below.
Note: A DSS Console is counted as a PT extension.
Maximum Port Number
1
2
3
4
Item
PT Extension +
SLT Extension +
CO Line
PT Extension +
SLT Extension
PT Extension
CO Line
/ System
512
448
-
192
/ Basic
Shelf
192
192
128
-
/ Expansion
Shelf
224
192
128
-
1
2
Item
Doorphone
DSS Console
/ System
8
64
Maximum Port Number