TRX is the reputable manufacturer and supplier of call recording systems in the
Polish telecommunications market. With almost 20 years of experience our
understanding of client needs allows us to create technical solutions superior to that
proposed by the competition.
We offer a full range of equipment, products, and services that are certain to
meet your needs and exceed your expectations. Our Development Team focuses on
quality and reliability while emphasizing intuitive simplicity on newly introduced
features. All our systems are modular in design, which simplifies upgrades,
adjustments, and repairs while minimizing client down-time. Our equipment is
compatible with most digital and analog PABX models and can be operated locally
or via IP connection.
Our digital call recorders will empower you to increase the efficiency of
dispatchers by analyzing past calls and decisions. We also provide call archives for
corporate call centers, which can be used to assess customer needs, quality,
efficiency, and as protection against fraud.
TRX offers solutions to a variety of municipal agencies, including but not
limited to the Police and Fire Departments, private security agencies, broker
agencies, the gas and electric power industries, and banks. Whenever preparing an
offer we extensively study the client's needs so we can customize the system to their
needs and facilitate future upgrades, while simultaneously working to minimize the
cost to the client.
We are always grateful for questions and comments and are ready to
collaborate on an individual basis to discuss solutions specific to your needs. We
have already sold over 3700 systems in Poland. TRX recorders over six years are
also being installed in Slovakia, the Czech Republic, Romania or Bosnia and
We hope that you will find the solutions we propose one that will meet Your
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System detail.
General characteristic
The KSRC series digital call recording systems provided by TRX are independent
devices controlled locally or over IP computer networks. The recorders have been designed to
register audio and call related data from telephone and radiotelephone systems. TRX solutions
are compatible with the majority of most popular PBX’es, such as: Alcatel OXE, Siemens
HiPath, Ericsson, Avaya CM, DGT 3450, Platan, Slican, Panasonic, EADS (MATRA).
TRX recorders allow for recording calls from analog, ISDN (BRA/PRA) or digital lines, as
well as VoIP based systems. For some radiotelephone models (Motorola GM series) we
supply adapters of our design.
The TEL (TRX Embedded Linux) system (based on GNU
Linux system).
Created solely for the call recording device, based on the popular,
reliable and stable Linux operating system, TEL guarantees the
seamlessness and reliability of the recorder’s work.
The system is installed on the separate, integrated FLASH drive.
The removable hard disk drive is utilized solely as a recorded calls
storage. The hard drive failure does not impair the stability of the
system. If a new disk is detected it is automatically set up for work
with the recorder.
Backing recorded calls up on a remote computer’s hard drive
does not cause their deletion form the recorder’s hard drive. There is no possibility of deleting
recorded calls other than overwriting them by the recorder itself after using all of the disk’s
free space. The deletion option has been removed for security.
The data is stored using the unique file writing system implemented only
in TRX Embedded Linux. This ensures the security of the recordings in case of unauthorized
Modular construction
The system assembly begins with basic central unit (5 models will be presented in detail
below) called main module. It consists of the casing, hardware components (base card, hard
drive) and applicable software.
The phone line adapter cards are accessory devices, fixed inside the module, and they are
selected according to the client’s specific needs.
The data transmission over LAN network is encrypted using the SSL protocol and TEL’s
encryption algorithms. The format the data is stored in is only recognized by the recorder,
thus installing the hard drive in the PC computer does not facilitate unauthorized access to the
The system can be operated by many users, divided into two basic access security groups:
Administrator and User. Each one of them can have different set of access rights to
particular functions of the recorder, such as monitoring, recording playback, archiving,
configuration settings, etc.
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The users are authorized in the system in a
username/password routine. The authorization system
can also be integrated to Windows™ operating system
or Radius® identification system (if the computer has
Radius® protocol chip-card reader installed).
Each channel can have its own specific level of
access. It allows diversifying the access level for many
separate users.
Call recording
Call recording can commence according to specified criteria. The following options are
available: VOX (signal level dependent activation), triggering (picking the receiver or other
external signal), digital signaling (ISDN, VoIP), network (remotely enforcing recording
commencement over LAN network). VOX and triggering criteria involve negative response
time (2 sec). This means the data buffered during the last 2 seconds before the criteria are met
are included in the recording. Triggering allows recording to be controlled manually (on
request) or involving external devices like button, clock (recording during office-hours),
photodetectors, movement sensors etc.
The calls recorded are time-stamped. In case of ISDN or VoIP based telephones the call
direction (inward/outward) including numbers (dialing and dialed) is recognized and stored.
The system is equipped with routines for telephone number decoding and presentation
(DTMF, FSK) and selective radiotelephone call presentation: CCIR EAA, ZVEI1, ZVEI2,
The line parameters such as recording-time signal level or recording stop delay can be
supplied to the system. Additionally, the user gains the ability to monitor the line status.
The software
The experience and aptitude of our programmers allowed us to create highly reliable
programs of intuitive interface and abundant in interesting features. The operator’s
workstation can be located independently to the recorder through use of LAN/WAN support.
The existing computer infrastructure can be used to install our programs. The number of
operators’ desks is only limited by the number of computers and technical parameters of the
network. Our software package is compatible with Microsoft® Windows™ (XP, Vista, 7, 8,
Server 2003, Server 2008).
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The main operating program is “Konsola 2.” Its friendly user interface gives access to all
(allowed by the user’s security level) recorder’s functions. It allows playback, channel
monitoring, and archiving without interruption in recorder’s work. It lets configure the system
in the deepest detail. It also has plenty of
convenient features, like searching (sorting)
the calls by age, by channel, by telephone
number, by comment or even by call
Konsola 2 allows call’s description
editing – the user may add their own
comment, update telephone numbers, adjust
the security level or encrypt the recording.
The calls can be quickly “skimmed” by
playing only a few initial seconds of each
The data is archived on a remote computer where it is transferred over LAN/WAN
network. The archive size can be freely modified (the maximum size, due to Windows file
system limitation is 2 GB) and adjusted to fit the CD-R or DVD-R drive.
The .trx format archive retains the recording structure, i.e. the archive as an image of all
or of a part of recorder’s data – the channel binding is retained so that search can be
performed as if directly on the recorder. The archived calls can be played on any computer
with Konsola 2 program installed.
The monitoring data can be presented graphically on screen.
When developing our software, we focus on its functionality and
simplicity of use always keeping the features up to your needs. Call
playback, for example, can be adjusted to play only a specified
portion of each call’s beginning or continuous playback, which
proceeds with all recordings from the list. Our equipment can even
store the state of system telephone display during recording.
The daylight saving time adjustment is also solved and is carried out automatically.
Moreover, the external recorder’s clock can be synchronized with external sources (DCF77)
via network (NTP protocol) and by master time signal broadcast.
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The software tends to gain functionality and new features with every new version. This is
the natural outcome of the system’s dynamic development and market assessment. For your
benefit, we care that you are up to date with our new software versions. We are aware that the
call recorders are to work seamlessly which is why we have designed the fast and seamless
software update procedure. It can be performed remotely over the network using the
“Konsola 2” program eliminating any need of interference with hardware.
Our complete understanding of your needs resulted in furnishing our software package with
new programs.
It is often the case that you do not require the whole call
to be recorded but only its crucial fragment, as in
conversation with the client. This special and useful feature
is enabled in “Pilot” program which enables the recording
from specific channel to be operated remotely by a
computer. It allows you to start and stop recording at any
moment during the call. The recorder enables assigning
channel operation privileges to specific user. You can then
sort the recordings by any criteria suitable for you: the call’s
subject, the answering person etc.
We are greatly concerned that our equipment and
software should require minimum attendance and provide
maximum convenience in use. The security of your data however is of the highest priority.
The “Automat 2” and “Monitor 2” programs we offer consolidate both above requirements.
The designation of “Automat 2” is periodical automatic recorder’s data archiving. By
properly defining the recording rules you ensure that no call will be overwritten by new one
and irrevocably lost. The program’s features comprise defining the archive size, periodicity
and timing of archiving (eg. 8 PM on every Friday).
„Monitor 2” is a utility that facilitates working with a set of recorders. It monitors the
state of equipment giving the operator a better control over the equipment and enabling to
quickly notice and react to any hardware or network failure.
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Should any problem arise, the program notifies the operator with a notification window
and a sound signal. The auditing, as supported by “Monitor 2,” increases security and
minimizes the delay in case of failure or malfunction. Because “Monitor 2” can watch
multiple recorders, it is possible to confine
whole control center to one workstation which
in turn allows you to use the existing control
Your satisfaction is our primary aim. We
are always working on improving convenience and intuitive simplicity of our software. The
number and variety of its functions growing daily we offer the training in applications and
equipment to clear up any arising doubts and increase your familiarity with our system’s
features. We can also suggest the specific adjustments to configuration so that it meets your
Virtual channels 1
When you purchase the call recording system, it is natural that you expect only the
required calls to be recorded. Upon closer study of the available equipment it often occurs that
it is not the case. The TRX developers put their minds to improve on this issue. We have
created virtual channels, a system of filtering and sorting the recorded calls.
Virtual channel can be operated just like an ordinary physical channel (without
monitoring), eg. you can assign user access rights, use as an archive source and play recorded
calls. The possibility to restrict calls to be recorded is its unique and most important feature.
To ensure that only the calls you need, will be recorded you can set a variety of parameters
like area code, source and target phone numbers, to mention just a few. Each virtual channel
has a set of rules according to which the recording is or is not performed. The physical
channels the calls are to be recorded from can also be chosen.
Let us study an example application. We assume that the Boss wants all incoming calls to be
recorded, except those from his family who use mobile telephones. The set of rules required
for this solution is presented below. All Boss’s calls will be assigned to “V3 – boss” virtual
That is only one basic example of this simple mechanism that greatly simplifies call
recording organization. The other examples are:
 assigning single channel for a specific caller, even if the latter uses many phone
 dividing workers into logical groups, depending on the ongoing projects, their home
departments, etc.;
 call zoning – by the area or country code.
Virtual channels are available only in case of ISDN lines (30B+D, 2B+D) or VoIP calls are supplied.
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The virtual channels allow you detailed employee control, let you record only vital calls, and
aid you in keeping and improving your company’s organization.
Available modules
We offer five types of modules which differ from each other in size, in the maximum
number of line interface card sockets (slots). Their common asset is the ability to be operated
via network. Everyone is equipped with 100/1000 Mbps Ethernet adapter.
Common technical properties of the modules
230 V~ +/- 20%
Power consumption
40 … 120 W
Input level for
analogue sockets:
50mV – 2V AGC implemented
LCD, monochrome, 4 line x 20characters
6 buttons, access key, speaker for monitoring
and listening to the recorded calls,
remote: LAN/WAN network
Hard disk
500 GB or greater
Storage volume
15 000 h. (for 500 GB)
Type of basic module
(W – H – D)
Option, comments
KSRC 308/316
2 - 16
400 x 115 x
380 (mm)
2 – 24
19” 2U
- optional two discs in the mirror
option in the "HotSwap" rack
19” 3U/4U
- optional two discs in the mirror
option in the "HotSwap" rack
- optional duplication of the power
source recorder
19” 3U/4U
- two discs in the mirror option in the
"HotSwap" rack,
- duplication of the power source
- operation with extension module
KSRC 332
2 – 32
KSRC 5128
2 – 128
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KSRC 332, KSRC 512 and KSRC 2U models can be equipped with two hard drives for
mirroring (a RAID 1 array that uses the second drive as a mirror image of the primary drive).
This protects you against data loss in case of drive failure and lets you replace the damaged
drive without turning the recorder off. Another security feature is the ability of the recorder to
utilize two independent power sources. The reliability of the recorder is thus greatly
Available adapters
The common characteristic of all adapters we manufacture is the application of Xilinx®
FPGA programmable chips and RJ-12 sockets as source signal connectors. With these we can
connect our devices to the majority of modern telecommunication systems manufactured by
the world’s most formidable companies.
DSP analogue adapter
Analog line adapter supports analog signal sources such as telephone line, radiotelephone or
microphone. DSP allows the analysis of incoming and outgoing calls numbers.
2B+D (BRA, S0) ISDN line adapter
2B+D (BRA, S0) ISDN line adapter. Each socket supports two voice channels.
Two versions are available:
 single socket (1 line – 2 channels),
 two sockets (2 lines – 4 channels).
The card is conducting analysis of numbers of incoming and outgoing calls.
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Analogue - digital ISDN 2B+D (BRA, S0) line adapter
You can connect two analog phone lines and one ISDN line, which means that the card is
able to record from two channels of analog and two channels of an ISDN line talkative. For
ISDN channels analysis is numbers.
ISDN 30B+D (PRA, E1, G703, DSS1/MFC R2) adapter
ISDN 30B+D digital trunk adapter (PRA, E1, G703 protocol, DSS1 or MFC R2 signaling).
The full board consists of 30 voice channels and two data channels (control). This adapter
connects the recorder directly to the digital PABX.
There are two versions of this card:
1) full - allows to record 30 voice channels,
2) half - allows to record the first 15 voice channels.
Digital board
Support one proprietary digital protocol per one board. Working with digital lines the
most popular manufacturers: Alcatel, Panasonic, Siemens, Ericsson, Avaya, DGT,
EADS(MATRA), Lucent Technologies, Slican.
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All of them come in 4-socket and 2-socket versions. This adapter allows you to analyze
of call directions (incoming/outgoing), “Calling” and “Called” party numbers, the contents of
the display system phones is also being recorded. Cards for individual systems can be
configured in a wide range. There is a possibility to customize the card software to specific
customer requirements.
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Configuration examples
Sample 1
You have 4 radiotelephones, two analog lines (2 telephones) and 4 ISDN telephones.
In your case the recording system will comprise:
- KSRC 316 as a base module;
- 2 channels analog line adapter (analog phones),
- 4 channels analog line adapter (radiotelephones),
- 2B+D ISDN line adapter (ISDN telephones).
This configuration allows future upgrade with one more 2- or 4-channels adapter as there
is one socket left in the base module. In case of KSRC-332 module - 5 sockets would be left
free and could be furnished with 5 pieces of 4-channels adapters giving additional analog
Sample 2
A company has a digital PABX with 30B+D trunk connected. In this case we suggest
a simple and inexpensive solution:
- KSRC 332 base module,
- 30B+D board adapter.
This configuration precludes connecting additional adapters, because 30B+D adapter
utilizes all available slots on recorder’s motherboard.
Sample 3
A call center uses 16 digital (system) phones. There are also 4 ISDN telephones and two
analog lines to record calls from. We suggest the following configuration as an optimum.
- KSRC 2U base module,
- 4 pieces of 4 channels system line adapters (16 system phones),
- 4 channels analog line adapter
(two analog lines, with upgrade margin for 2 additional lines);
- 4 channels 2B+D ISND adapter.
The module is equipped with 6 pieces of adapters – it was reached maximum usage
recorder’s resources.
Sales offer
Thank you for acquainting with our offer.
ul. Garibaldiego 4
04-078 Warszawa
Web site:
Phone: + 48 22 871 33 33
Fax: + 48 22 871 57 30