MSA ITS-1004 User manual

Limited Liability Company
«NPK MORSVYAZAVTOMATICA»
26E, Kibalchicha str., 192174,
St. Petersburg, Russia
[email protected]
www.unicont.com
Phone.: [phone]
Fax: [phone]
MARINE AUTOMATIC TELEPHONE SYSTEM
ITS-1004
Operating manual

Version 10.6.3 2
Marine automatic telephone system
ITS-1004
TABLE OF CONTENTS
INTRODUCTION................................................................................................................. 3
1TECHNICAL DESCRIPTION....................................................................................... 4
2DESCRIPTION AND OPERATION OF THE SYSTEM.............................................. 7
3SYSTEM COMPOSITION ............................................................................................ 9
4INSTALLATION ......................................................................................................... 13
5CONNECTION............................................................................................................. 14
6SYSTEM SETTINGS................................................................................................... 15
7INTENDED USE.......................................................................................................... 16
8TRANSPORTATION AND STORAGE...................................................................... 28
9DISPOSAL ................................................................................................................... 29
ANNEX A TERMINALS CONNECTION DIAGRAMS OF SC ................................... 30
ANNEX B CONNECTION DIAGRAMS OF THE SYSTEM UNITS........................... 33
ANNEX C DESCRIPTION AND PURPOSE OF UNITS............................................... 38

3Version 10.6.3
Operating Manual
INTRODUCTION
This operating manual (hereinafter referred to as OM) is intended to describe
Marine automatic telephone system ITS-1004 (hereinafter - the System).
OM describes the structure, operating principles, operating rules for the System
components (hereinafter –the SC) during intended use and technical maintenance. OM
may also provide information for corresponding sections of the System operational
documentation, where SC may be applied as units composing the System.
In addition to the instructions given in this document, the safety regulations and
rules applicable in the field shall be observed. Only those who have read and understood
this document and those who have had special training shall be permitted to operate with
the System according to the applicable regulations.
Equipment defects occurred due to non-observance of the current OM shall not
be cause for reclamations to the Manufacturer.
Terms and abbreviations:
DECT –digital wireless communication;
DTMF –dual-tone multi-frequency analog signal;
SB –storage battery;
UТ–user terminal;
ATX –automatic telephone exchange;
CID –automatic caller identifier (CallerID);
CM –console mounting;
LC –loudspeaker communication;
UTN –urban telephone network;
VAS –value added services;
LCD –liquid-crystal display;
SPTA –spare parts, tools and accessories;
CPAU –command public address unit;
HM –hinged mounting;
DM –desk-top mounting;
PU –priority user;
PC –personal computer;
S –software;
RTC –radio telephone communication;
SC system components;
PSTN –public switched telephone network;
CU –central unit.

Version 10.6.3 4
Marine automatic telephone system
ITS-1004
1TECHNICAL DESCRIPTION
1.1 Purpose
Marine automatic telephone system ITS-1004 ensures telephone communication
between rooms and stations of passenger and cargo vessels, submarines and ships of all
classes, as well as communication with users of coastal telephone networks during
anchorage. The System may have an industrial application.
1.2 Technical specification
Table 1 –Main technical specifications
Parameter
Value
Max. number of internal lines
64
Max. number of external lines
6 (optionally –max. 12)
Detection efficiency of calling
signal
30 V, 16…55 Hz
Dialing mode
Tone and pulse
Power supply voltage
Main power:
–single-phase AC, frequency 50(60) Hz, voltage 220 V (180…264 V);
–24 V DC (18…36 V);
Standby power:
–24 V DC (18…36 V)
Max. power consumption
90 W
Operational constraints
IP rating of SC
IP20, IP22, IP44, IP56, explosion-proof
Operating temperature
15 °C…+55 °C – for the SC installed inside;
40 °C…+55 °C – for the SC installed on open deck
Temperature range for units installed at explosion hazardous
facilities is set in compliance with a certificate and documents for
explosion-proof equipment
1.3 General description
Depending on the place of installation the SC may be delivered with different IP
ratings (IP20, IP22, IP44, IP56, as well as explosion-proof type) and types of mounting
(desk-top or hinged (wall), or console (flush) types), see Table 3 and Appendix C.
The System deployment is carried out using one central unit ITS-CUA of
corresponding type, connected user terminals and other peripheral equipment if any
required.

5Version 10.6.3
Operating Manual
The System may include the following UTs:
–analog: button or rotary-dial, pulse or tone dialing (DTMF);
–facsimile: a fax unit;
–digital: for telephone communication, system settings and configuration;
–DECT radio telephone communication.
Full list of UTs is represented in Table 0; UTs features - in Table
Table 4.
The System operates with single-phase AC mains, frequency 50(60) Hz and
voltage 220 V and (or) 24 V DC; voltage of standby mains is 24 V DC.
In case of power failure the System automatically switches over to standby power
supply and vice versa ensuring uninterruptible operation.
Standby power mains, rechargeable storage battery or uninterruptible power
supply units may be used as standby power sources.
General System features:
a) Ready to operation within max. 30 sec after power-on;
b) User communication in ATX mode;
c) Communication with coastal ATX using two-wire lines;
d) Radio telephone communication within operating range of base unit; access
to internal telephone network;
e) Facsimile communication using corresponding devices;
f) Effective operation with max. length of trunk lines 500 m –for analog and
digital telephones;
g) Public address communication (direct one-way public address
communication) via internal System units and external broadcasting unit;
h) Integration with loudspeaker system ICB-131 produced by «NPK MSA»;
connection and two-way communication with pre-selected substations of loudspeaker
system;
i) Automatic recording of voice data using a recording device; only for analog
lines;
Administration and system settings from connected PC.

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Marine automatic telephone system
ITS-1004
The System ensures the following communication services:
А) Basic: provided for every UT by pressing corresponding button, see cl. 7.3:
1) Manual call forwarding to external or internal communication lines;
2) Automatic redial;
3) Manual redial;
4) Call hold;
5) Conference call, max. 3 participants;
B) Optional: enabled by the Manufacturer in compliance with an order list, see cl. 7.5:
1) «Direct communication»–automatic connection to pre-selected user without
dialing;
2) Restriction of outgoing call to external lines;
3) Priority caller status including the following additional functions:
–forced connection to busy line disconnecting current communication;
–announcements (one-way communication mode) via internal system unit, for
units supporting loudspeaker function;
–public address announcements using command public address unit;
4) Assignment of functional keys for pre-selected user numbers or basic service
code or value added service code, see Tables 6 and 8;
5) Administration using PC or service unit;
а) Value added services which are enabled (disabled) by user, see cl. 7.4:
1) Call forwarding if user line is busy;
2) Call forwarding if not answered;
3) Inquiry during current communication;
4) New call notification;
5) Call interception;
6) Group member call interception.
Note –Additional services are specified in the order list which is represented by
the Customer at the stage of Supply contract conclusion, see cl. 7.4, 7.5 and
Tables 8 and 10.

7Version 10.6.3
Operating Manual
2 DESCRIPTION AND OPERATION OF THE SYSTEM
The System is a local marine automatic telephone system suitable for shipboard
use.
The System operation is based on automatic switching unit (central unit) which
divides telephone system into internal and external, and switches calls and connections
among user lines. Connected internal user terminals form a common telephone system
(user lines), i.e. internal system. Within internal system the central unit assigns a unique
number to every user line; connected to the corresponding user lines UTs dial this number,
ensure addressed connection with each other and communicate in two-way mode.
Connection of external lines to coastal communication lines allows for access to
external telephone system (urban telephone network).
Sample SC connection and connection to external devices are represented in
Figure 1.
Figure 1 –Sample connection of SC

Version 10.6.3 8
Marine automatic telephone system
ITS-1004
The types of CU depend on the number of ports to connect telephone lines, see Table 2.
Table 2 –List of CU types
CU types
Number of
external lines
Number of
internal lines
Notes
ITS-CUA-0308
3
8
8h**
ITS-CUA-0316
16
8h/8а**
ITS-CUA-0324
3(6)*
24
8h/16а**
ITS-CUA-0632
6(9)*
32
16h/16а**
ITS-CUA-0640
40
16h/24а**
ITS-CUA-0648
6(12)*
48
16h/32а**
ITS-CUA-0656
56
22h/32а/2ip***
ITS-CUA-0664
64
30h/32а***
Note:
h (hybrid) –ports to connect digital and analogue telephones.
а(analog) –ports to connect analogue telephones only.
ip (VoIP) –ports to connect VoIP telephones only.
* Number of external lines can be optionally increased (6, 9 or 12).
** Analogue telephones can be connected to all hybrid ports except one.
*** Two hybrid ports out of the listed number are incapable to connect analogue telephone.
To provide settings of the CU, use the following options:
«PC admin» – software for the system settings using PC (USB or COM ports);
«Remote administration» –software for the system settings (software option
«PC admin») and Ethernet port of the System CU –to connect PC and ensure system
administration via Ethernet network;
Telephone unit (service) PT-SYSA –is a digital unit for service use
(programming and system settings); it may be additionally included in SPTA set;
Automated workstation –portable PC with pre-installed program for settings
(«PC admin» option) and Ethernet port of the System CU.
Note –All options are specified in the Supply contract.

9Version 10.6.3
Operating Manual
3SYSTEM COMPOSITION
Table 3 –System composition
Name
Type
Description
Mounting,
operating
temperature,
IP rating
Central units
Central unit
ITS-CUA
ITS-CUA-
0308
7 ports to connect to System user terminals and 3 ports
to connect to coastal communication lines
Hinged,
15 °С…+55 °С,
IP22
ITS-CUA-
0316
16 ports to connect to System user terminals and 3
ports to connect to coastal communication lines
ITS-CUA-
0324
24 ports to connect to System user terminals and 3
ports to connect to coastal communication lines
ITS-CUA-
0632
32 ports to connect to System user terminals and 6
ports to connect to coastal communication lines
(increase of up to 9 external lines at option)
ITS-CUA-
0640
40 ports to connect to System user terminals and 6
ports to connect to coastal communication lines
(increase of up to 9 external lines at option)
ITS-CUA-
0648
48 ports to connect to System user terminals and 6
ports to connect to coastal communication lines
(increase of up to 12 external lines at option)
ITS-CUA-
0656
56 ports to connect to System user terminals and 6
ports to connect to coastal communication lines
(increase of up to 12 external lines at option)
ITS-CUA-
0664
64 ports to connect to System user terminals and 6
ports to connect to coastal communication lines
(increase of up to 12 external lines at option)
User terminals
Analog telephone
unit PT-1А

Telephone communication with VAS. Equipped with a
call volume regulator. For internal premises
Desk-top, Hinged
15 °С…+55 °С,
IP20
Analog telephone
unit
PT-2А

Telephone communication with VAS. A set of
functional keys (10 pcs.), LCD and speakerphone
mode. For internal premises
Desk-top, Hinged
15 °С…+55 °С,
IP20
Analog telephone
unit
PT -3А

Telephone communication with VAS. Microphone-
OFF button, a call volume regulator, compact design.
For internal premises.
Hinged,
15 °С…+55 °С,
IP20
User terminals, waterproof
Analog telephone
unit
PT-CMAW
PT-CMAW-
PM
Telephone communication with VAS. A headset,
external signaling units and loudspeaker may be
connected. For open decks (swept by waves) and cargo
hold.
Console,
40 °С…+55 °С,
IP56
PT-CMAW-
WM
Hinged,
40 °С…+55 °С,
IP56
Analog telephone
unit
PT-2AW

Telephone communication with VAS (limited set).
Waterproof enclosure. Equipped with protective door
(casing) to avoid mechanical damage. For open decks
(swept by waves) and cargo hold.
Hinged,
40 °С…+55 °С,
IP56
User terminals, explosion-proof
Explosion-proof
analog telephone

Telephone communication with VAS, explosion-proof
Ex e ib mb IIC T6 Gb / Ex tb IIIC Т80 °C Db
Hinged,

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Marine automatic telephone system
ITS-1004
Name
Type
Description
Mounting,
operating
temperature,
IP rating
unit KNEx1 (Ex)
Koontech
(protection types «e», «m», «i», «t»). A set of
functional keys (5 pcs.), LCD. An external
loudspeaker, headset and external signaling circuit may
be connected. For open decks (swept by waves) and
cargo hold.
25 °С …+60 °С,
IP66
Explosion-proof
analog telephone
unit ExResistTel
(Ex) FHF

Telephone communication with VAS, explosion-proof
(protection type: according to TR CU 012/2011: 1Ex e
mb [ib] IIC T6/T5 Gb, Ex tb [ib] IIIC T 80 °C / 100 °C
Db according to IECEx: Ex e mb [ib] IIC T6/T5 Gb,
Ex tb [ib] IIIC T 80 °C/100 °C Db). A set of functional
keys (5 pcs.), LCD. An external loudspeaker, headset
and external signaling circuit may be connected. For
open decks (swept by waves) and cargo hold.
Hinged,
25 °С…+60 °С,
IP66
Fax unit
Fax unit PT-FAX

Facsimile and telephone communication with VAS in
«TELEPHONE» and speakerphone mode, LCD. A
headset may be connected. A set of functional keys (6
pcs.). Analog. Power supply 220 V, 50(60) Hz. For
internal premises.
Desk-top,
15 °С…+55 ° С,
IP20
Radio telephone units
Radio terminal
PT-ADC

Radio telephone communication (DECT/GAP) with an
access to wired network of shipborne telephone
communication.
Portable,
15 °С…+55 °С,
IP20
Base station /
Charger
BS/CH-ADC

Desk-top,
15 °С…+55 °С,
IP20
Power supply unit
PS-ADC

Hinged,
15 °С…+55 °С,
IP20
Radio terminal
PT-ADCW

Radio telephone communication (DECT/GAP) with an
access to wired network of shipborne telephone
communication.
Portable,
40 °С…+55 °С,
IP56
Base station
PS-ADCW

Hinged,
40 °С…+55 °С,
IP56
Power supply unit
PS-ADCW

Hinged,
15 °С…+55 °С,
IP22
Charger
CH-ADCW

Desk-top,
15 °С…+55 °С,
IP20
Loudspeaker
Loudspeaker
ITS-LS

Announcement of commands (to unit PT-2AW),
0.3 W, 93 dB (45 Ohm), plastic casing. For open decks
(swept by waves) and cargo hold.
Hinged,
40 °С…+55 °С,
IP56
Equipment of explosion-proof units
Loudspeaker
5802 (Ex) FHF

Announcement of commands (to unit ExResistTel)
0.3 W, 93 dB (45 Ohm), plastic casing, explosion-proof
(1ExibIICT6/CT5 and DIP A22 Ta 80 °C/100 °C)
Hinged,
25 °С…+40 °С,
IP54

11 Version 10.6.3
Operating Manual
Name
Type
Description
Mounting,
operating
temperature,
IP rating
Explosion-proof
headset
MT53H79B

External two-way communication device for
ExResistTel, explosion-proof (1Ex ib IIC T4); cable
0.8 m.
Hinged,
(on a bracket),
10 °С…+55 °С,
IP54
Explosion-proof
signaling unit
5842/1 (Ex) FHF

Light signaling (red / yellow / green / blue) for
incoming calls of ExResistTel; 1…2 Hz and sound
90 dB (1 m); explosion-proof 2Exem[ib]IICT6.
Hinged,
20 °С…+60 °С,
IP66
Explosion-proof
signaling unit
5842/2 (Ex) FHF

Sound signaling 90 dB (1 m) of incoming calls of
ExResistTel, explosion-proof (2Exem[ib]ibIICT6).
Hinged,
20 °С…+40 °С,
IP66
Audio recorder
Audio recorder
ITS-SLSR

Recording and storage of communication data
(powered from user line)
Hinged,
15 °С…+55 °С,
IP22
Connection units (boxes and outlets)
Power outlet
KP-RJ11
KP-RJ11-C
To connect user terminal to CU user line through a
connector RJ-11 type (6 pins)
Console
15 °С…+55 °С,
IP22
KP-RJ11-Н
Hinged,
15 °С…+55 °С,
IP22
Junction box
КР-16

Trunk cable distribution (16 user lines) for 16 ways
Hinged,
15 °С…+55 °С,
IP22
Junction box
КР-124PW
КР-124PW-2
To connect PT-2AW to CU user line, waterproof
Hinged,
40 °С…+55 °С,
IP56
Junction box KP-1

To connect CU external lines to coastal ATX lines,
waterproof
Hinged,
40 °С…+55 °С,
IP56
Service telephone unit
Service telephone
unit PT-SYSA

Digital service unit (system programming and
settings); may be additionally included in SPTA set
Desk-top,
15 °С…+55 °С,
IP20
Notes:
1 Number of options is specified in the order list.
2 Construction features of user terminals (type, mounting, etc.) are represented in Table 4.
3 Detailed description of system units is represented in Appendix C.
4 The System may be composed fromother units of systems produced by «NKP MSA» LLC in case of their electrical
and functional connectivity. Inquire the Manufacturer to confirm the connectivity.

Version 10.6.3 12
Marine automatic telephone system
ITS-1004
Table 4 –Main construction features of user terminals
Characteristic
Type of user terminal
PT-1А
PT-2А
PT-3А
PT-FAX
PT-ADC
PT-ADCW
PT-2AW
PT-CMAW
KNEx1 (Ex),
Koontech
ExResistTel (Ex),
FHF
VAS support
+
+
+
+
+
+
+1)
+
+

Functional keys

+

+
+
+

+
+
+
Radio telephone
communication
(DECT)




+
+




Speakerphone

+

+
+
+


+
+
Headset
connection









+
LCD

+

+
+
+


+
+
Buttons
backlight



+
+
+




Waterproof





+
+
+


Explosion-proof








+
+
1) Limited VAS set, see Table 8.

13 Version 10.6.3
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4 INSTALLATION
The SCs are installed according to dimensional and connection drawings in
Appendix C.
Place for SC installation shall be selected considering operational constraints
(operating temperature, IP rating, explosion protection class); all required information is
listed in Table 3 and Appendix C.
4.1 Central unit installation
CU has hinged type of mounting to vertical bulkhead. Before mounting select an
installation place regarding free lead of cables and maintenance access.
4.2 User terminals installation
4.2.1 Installation of stationary user terminals
Depending on class and type user terminals may have desk-top or hinged (wall)
or console (flush) type of mounting, see Appendix C.
Select a place for UTs installation regarding convenience of access, normal
operation and maintenance, if required.
4.2.2 Installation of radio telephone units
It is recommended to select a mounting place for base stations BS/CH-ADC and
BS-ADCW in the centre of the room (facility) where portable RTC units are supposed to
be used.
It is recommended to install power supply unit PS-ADCW within max. 2 m from
the telephone receiver holder due to limited length of standard cable.
It is recommended to install power supply unit PS-ADC within max. 2 m from the
base station and charger BS/CH-ADC due to limited length of standard cable.
4.3 Installation of other units
Junction boxes КР-16 shall be installed inside and mounted on vertical bulkhead;
integrity and reliable fastening of connected cable is ensured by cable glands and cable
tie of boxes.

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Marine automatic telephone system
ITS-1004
5 CONNECTION
5.1 General instructions
Connect SC to CU according to the diagrams represented in Appendix A.
To perform basic functions, the System shall consist of the central unit and user
terminals and be connected to power supply mains.
The central unit operates with AC network, frequency 50(60) Hz and voltage 220
V and (or) 24 V DC. If power backup is required, the CU is connected to standby power
24 V DC. In case of power failure the System automatically switches over to standby
power; as soon as main power restores, the System automatically switches back ensuring
uninterruptible operation.
All UTs (connected to CU) are powered directly from the CU, except PT-ADC,
PT-ADCW, 5842/1 (Ex), 5842/2 (Ex) which require additional external power supply
from AC mains, frequency 50 (60) Hz and voltage 220 V. Fax unit PT-FAX operates only
with AC mains, frequency 50 (60) Hz and voltage 220 V.
UTs are connected to CU lines using screw terminals or power outlet with standard
RJ-11 connector, see Appendix A. For more information on types of terminals which connect
CU to user terminals, external units and communication lines, see Tables А.1 –А.2.
Connect audio recorder ITS-SLSR in a user line “break” (only analog type);
connect ITS-SLSR in the line of UT which you are going to record. Number of audio
recorders shall correspond with number of UTs for recording.
ITS-SLSR audio recorder is powered directly from user line and does not require
external power.
5.2 Recommendations on power supply
To power the System, choose a power source with corresponding power and
voltage, see Table 1.
5.3 Recommendations on cables
Table 5 –Recommended cables to connect SC
Purpose
Number of
pairs
Cable cross
section
Cable
length
Cable type
User terminals and units connected
via analog user lines (see Fig. B.1)
1 pair
0.5 mm2
500 m
КМПВЭВ 2х0.5(э)
Power
supply
main 220 V, 50(60) Hz
1 pair
1.5 mm2

КМПВЭВ 2х1.5(э)
main and standby
24 V DC
1 pair
At least
2.5 mm2
КМПВЭВ 2х2.5(э)
Cable laying may be performed using trunk cables; for convenient installation use
junction boxes КР-16 designed to ensure transfer from trunk cables to single-pair cables
(user lines).

15 Version 10.6.3
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6SYSTEM SETTINGS
6.1 Settings features
The System settings are provided by the Manufacturer according to the order list
(see Appendix B) which is agreed with the Customer at order.
If such list was not composed, The System is delivered with standard user lines
arrangement, basic settings and VAS (see cl. 7.3, 7.4).
After delivery the Customer may provide the System settings using program,
service telephone unit or service PC. The settings are provided according to the
Manufacturer’s documentation delivered by separate request, or involving the
Manufacturer’s specialists.
6.2 General information on the System settings
Aside from the main service (automatic telephone communication) the System
ensures additional communication services:
–basic services (cannot be disabled), according to the list represented in Table 6;
–additional services according to the list represented in Table 8, enabled or
disabled by service code directly from UT;
–optional services, according to the list represented in Table 10, enabled by the
Manufacturer by agreement with the Customer.
The following additional System settings are available:
–assignment of UTs functional keys: modes and functions to program UTs
buttons, see Table 8;
–automatic recording of voice communication using pre-defined line;
–tools and equipment to set up and administrate the System;
access to Public address system ICB-131 («NPK MSA»LLC) and ATX digital
network (IP telephony).
Note –Set of additional options for the System is arranged according to the order
list which is approved by the Customer at order.

Version 10.6.3 16
Marine automatic telephone system
ITS-1004
7INTENDED USE
7.1 Preparation for use
Before the operation user shall:
observe visually and make sure that system units have relevant arrangement
and reliable fastening in compliance with section 4;
make sure that all cable connections are performed in compliance with section
5 and Appendix A;
check safety of performed mounting: all cables shall have reliable fastening and
isolation; cable shielding shall not have damage which may lead to electrical shock;
mounting cables and cable glands shall have reliable fastening; devices with metal
casings shall be grounded properly.
7.2 Starting procedure
To switch the System on, supply power to the System and SC, press “Power”
button on the CU. After 30 seconds (System initialization time) the System is ready for
operation.
7.3 Basic System services
Depending on the UTs the System provides the following basic communication
services, see Table 6.
Table 6 –Basic services supported by the System UTs
Function
OM sections
Types of UT
UT with
advanced
functions
UT with radio
channel
UT with radio
channel,
waterproof
Explosion-proof
UT
Waterproof UT
UT
PT-2А, PT-FAX
PT-ADC
PT-ADCW
KNEx1 (Ex),
ExResistTel (Ex)
PT-CMA
PT-CMAW
PT-1А, PT-3А
Basic System functions
Manual last number recall (without number
dialing)
7.3.5
+
+
+
+
+
+
+
Automatic last number recall to external and
internal lines (auto redial)
7.3.3
+
+
+
+
+
+
+
Manual call forwarding
7.3.4
+
+
+
+
+

+
One-touch dialing
7.3.7
+
+
+
+
+
+
+
Abbreviated dialing of external and internal
users
6.3.8
+
+
+
+
+
+
+
Conference
7.3.6
+
+
+
+
+

+

17 Version 10.6.3
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Table 7 –Quick reference on basic functions
Function
Activation
Call to external user
«9» internal user number
Auto redial
Internal user number [REPEAT]
Last number recall
«552» [REPEAT]
Conference
User number 1
[HOLD] User number 2
[HOLD]
[HOLD]
Personal abbreviated dialing
«558» Cell number [000-099]
7.3.1 Calling external and internal users
Outgoing calls are available from any UT with dialing.
The System allows for calling users of external (coastal) telephone networks if
external lines are connected to coastal communication lines.
To call internal user:
1.Pick up a telephone receiver and press a speakerphone button.
2.Dial internal user number.
Access to external lines may be limited while system programming. The list of
UTs with access to external lines is specified at order.
To call external user:
1.Pick up a telephone receiver and press a speakerphone button.
2.Enter authorization code, then enter access code to external line (by default «9»).
3.Dial the number.
Note  authorization code is arranged at order.
7.3.2 Answering a call
If incoming call is received:
1. Pick up a telephone receiver and press a speakerphone button (if available) or use
a headset (if available).
2. Speak.
Note For more information on speakerphone, headset connectors and other
features, see Table 4.

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7.3.3 Auto redial
If a user line is busy or there is no answer:
1. Press button [REPEAT].
2. Put a receiver down.
3. The System will automatically redial number in a specified time interval
specified number of times. Redial timer and number of attempts are set at order on Customer
request. Auto redial lasts 3 minutes by default.
4. After answer pick up the receiver.
5. Speak.
Use speakerphone or connected headset for communication (if specified options
are available).
7.3.4 Manual call forwarding
To ensure this function:
1. Press [HOLD] during incoming call.
2. After the start dialing signal (tone), dial user number where you are going to
forward the call.
3. Put the receiver down.
7.3.5 Number repetition
To repeat the last number redial:
1. Pick up the receiver.
2. Enter code of last number recall «552» or (if available) press [CALL REPEAT].
7.3.6 Conference among internal users with sequential add-on of participants (max. 15)
Only three-way conference is available for analog UTs.
To create a conference:
1.Make a call.
2.During conversation with the first participant press [HOLD].
3.After the start dialing signal (tone), make a call to the second participant (not later
than in 2 seconds).
4.During conversation with the second participant press twice [HOLD].
All users may participate in conference.

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7.3.7 One-touch dialing
To use one-touch dialing:
1. Pick up the receiver or press speakerphone button.
2. Press button of relevant function.
The list of UTs to install this option is agreed at order.
Notes:
1 The function is available only for analog UTs with advanced features.
2 The function shall be assigned beforehand.
7.3.8 Abbreviated dialing
This function allows for abbreviated dialing (from UT memory) instead of dialing
full number of coastal ATX user.
1. Pick up the receiver.
2. Enter code of abbreviated dialing function «558».
3. Dial cell number (000-099), where user number is stored.
Note  The function is available for all UTs.
7.4 Value added services (VAS)
Analog UTs with pulse and tone dialing have the following VAS, see Table 8.