The CRU-2AN can be configured and set up by its client application (CRU-2AN-PC software). This client application can run under WINDOWS 2000/WINDOWS10 on any Pentium 4 and above (or on of >1GHz Pentium 3) configuration. No special requirements are needed..


There are two available basic types of recording:

• On one hand, the CRU-2AN can record using its SD cards independently. The applied file system is FAT32, so removing the SD cards and inserting them into a card reader the records can easily be carried for a PC and can be copied and listened under WINDOWS. The device automatically selects the available card, so it is possible to remove a full SD card while the other one is active.
• On the other direct recording on the PC’s HDD is also possible with the client application. Furthermore, parallel recording on the CRU-2AN’s SD card and on the client PC’s HDD can also be set up. With the client application the inputs can be listened in real-time (independently from the recording).

The recorded files can be played back with the client application. Two types of playback are possible: local or remote. Local playback can be used to play the records stored on the PC’s HDD or stored on the inserted SD card. Remote playback is used when the SD card is not removed from the CRU-2AN. In this case the files can be played through the IP connection. The playback does not disturb the existing recording (simultaneous recording and playback on the SD card).

In the client application the current status of the SD cards are shown: active recordings, number of records, available free space, SD card operation status, etc.

The recording can be continuous, or VOX triggered. A highly efficient adaptive voice detector is implemented for both channels.

On the SD card circle recording can be set up. In this case the device handles the two SD card like one storage, and in case of full SD cards the oldest files are deleted automatically.


The audio data is stored in a vendor specific encrypted and electronically signed format. The files can be carried and copied under windows with the file manager because the files are standard FAT32 files. The content is specific and is protected with electronic sign. The playback is possible with the client application. The client application verifies the electronic sign and decodes the applied encryption. From the client application all the files can be exported into standard “wave” files and after this, files can be played with a standard media player.

On demand, the format on the SD card can be changed into standard WAVE format. In this case the records on a removed SD cards can be listened without any client program activity. No additional client program is required (only for set up). The configuration is stored in the CRU’s flash memory).

The exact time stamps of the start and the end date/time of a speech communication (VOX trigger begin/end) are attached inseparably to the speech content.

• Two microphone input with 0-50dB adjustable gain and +30dB selectable with jumper.
• Two symmetrical (balanced) line inputs towards DWS recording output or other audio sources. Maximum acceptable level is +6dBm. 0-50dB adjustable gain can be applied.
• Independent automatic gain controls for both channels.
• Two independent voice activity detectors
• Selectable sampling frequency (8KHz, 16KHz, 24KHz), 8KHz is recommended for DWS recording.
• 1x stereo or 2x mono operation modes.
• Low power consumption (<1W).
• Applicable SD cards: 1GB, 2GB SD, 4GB, 8GB, 16GB SDHC or Ultra II cards
• Interoperation with HUNGAROCOM’s centralized archive recording system (optional).

High storage capacity: with two 16GB micro SDHC card and with 8KHz sampling frequency the capacity is about 45-day continuous speech.

Hungarocom's CYPCOM equipment family can offer different functions on, or between E1 and IP lines like bridge, media converter, E1 over IP, IP over E1, with encryption and different monitoring recording functions. These functions are based on two types of application specific core hardware units:

• CYPCOM-200 hardware has eight Ethernet interfaces and two E1 PCM interfaces (RJ-45)
• CYPCOM-201 hardware has two Ethernet interfaces and four E1 PCM interfaces (RJ-45)

The common parameters of both versions are: 230V or 48V (12V optional) operation, 1 unit high standard rack construction, high protected equipment box with key (no screws outside), high speed low power consumption core module, upgradable firmware, physical alarm contacts. There are 75/120 ohm or high impedance E1 connections. Central remote management is available for all applications. Based on these flexible core hardware modules HUNGAROCOM provides FoD (Function on Demand) service. That means, in case of customer’s special function or feature requirements HUNGAROCOM can develop the unique features within short time.


The PcmMon equipment is developed for intelligent monitoring of E1 lines. Based on HUNGAROCOM’s CYPCOM-201 core hardware, the equipment has four E1 inputs (PCM Rx). To monitor one E1 line requires two E1 Rx channels, so the hardware can monitor two full duplex E1 PCM lines. E1 Rx lines connect to the E1 lines with high impedance without disturbing the original traffic. The received E1 signal is analysed and processed by the CYPCOM-201’s internal CPU in real time (HDLC frames, DSS1, QSIG, SS7 signalling, Voice channels, DTMF reception are provided). The processed traffic than stored on the built in 2,5” HDD (or SSD).

If the monitored PCM uses DSS1, QSIG, or SS7 signalling the PcmMon detects the call sessions and records the voice channels with related CDRs (communications recording function).

A complex Windows based client application is available to display the stored information. There is some optional off-line post processing function available in the client application (i.e. FAX decoding).

Online channel monitoring is also supported from the client application.



Front panel connectors (small enclosure)



Front panel connectors (standard rack enclosure)

• Number of full duplex E1 lines monitored simultaneously:2
• Physical connection:High impedance
• PCM modes:PCM 30, PCM31, unframed, CRC4 and AMI/HDB3 coding supported
• Real time handled protocols and signals:HDLC, DSS1, QSIG, SS7, DTMF
• Voice channel recording:call sessions with attached CDRs (CDRs based on DSS1, QSIG or SS7 and in band DTMF)
• Recording method:records are encrypted and protected against manipulation. Every records and stored events contain exact time stamp.
• Internal storage capacity: max. 2x1TB 2,5" HDD (or max 2x500GB SSD).
• Two alarm contacts for minor and mayor alarms.
• Operation voltage: 230V with external adapter, 48V (or optionally 12V) without external adapter.
• Client application features: display recorded data, voice record playback and export to standard WAV file. Convenient search functions.
• Optional off-line processing feature: FAX communication decoding.
• Size: Standard 1-unit high rack mounted or small enclosure
• Package content: CYP-201-PCMMON equipment, power adapter, PCM cables and passive TAPs, software, documentation.
• Size:standard rack enclosure: 483x185x44 mm; small enclosure: 266x189x29,5 mm

The server based communications recording system is suitable to record communications according to protocols SIP, SIP-T, H.232, H.248, RTP. The system is able to record, store and playback VoIP calls with their communications content and call related data, simultaneously in 480 channels.


The next Figure introduces generally the connections of the system. It is connected to the IP network, where the communications shall be recorded. The access to the different levels of the network (access, accumulation, backbone) is assured by a switch with mirroring port, or by a tap device connected in parallel to the different medias of the IP network hierarchy. The communications recording system is able to record different communications event depending on the system setup. Local workstations can be connected to the recorder server as introduced in the next Figure via LAN, WAN, and public internet.



The next Figure shows the connection of the recording server to a general PABX, or call manager system.




Handling 480 simultaneous channels server with the following parameters shall be provided:

• Type: HP proliant G8 series with redundant power supply
• CPU: minimum 2,4GHz quad core intel XEON cpu
• Memory: 8GB, dual channel DDR3 1333MHz
• HDD: minimum 2x300GB 2,5” SAS Raid-1 (depending on the volume to be stored)
• Blu-ray drive: for local archivation
• Gigabit Ethernet: two ports
• Other: min. 2xUSB port, US

Communications (archive) recording means recording of all call related data information together with the speech or data communication. The traffic cases included in the communications recordings are the following:

• group calls
• all type of individual calls of radio terminals (incoming, outgoing, simplex, duplex, normal, emergency etc.)
• all type of individual calls of dispatcher workstations
• SDS and status messages sent to a group
• SDS status messages sent to and sent from an individual radio and DWS

For the mentioned traffic cases, the following call related data are recorded:

• the exact time of the communication and events, call beginning, end, duration
• calling party SSI, called party SSI; Call ID
• type of the call (incoming, outgoing, simplex, duplex, normal, emergency…etc), priority
• TETRA specific: TxGranted, TxCeased events
• participant list of a group call session
• other events (i.e. radio terminal tracking information) which are provided on Airbus’s TETRA TCS API

We are proud that the centralized, geo-redundant communications recording (Archive Recording) of the entire Hungarian TETRA system (EDR) is performed by HUNGAROCOM solutions and equipment.

The AR system is designed to centrally record group communications (call events, voice, SDS and status messages) and individual communications (call event, voice, SDS and status messages) furthermore flexibly retrieve/export and archive recorded communications.

The recording function is based entirely on the support of the current latest REL.8 version of the TETRA system. The basic principles are as follows:

• Audio is recorded with dynamic channel reservation, so much less recording time slots (i.e. E1 channels) are required than SSI communications to be recorded.
• The control of recording is handled by the call event monitoring function.
• Audio access is only required for DXTs where the AR system is installed.
• The principle of user access is that the user/password assigned in the TETRA system can be used, and the system is based on the rights assigned in the TETRA system for each function (communication right, management right, user SSI range…, etc.).
• User access is provided by a “thick” client software that can run on the DWS machine or on any independent terminal (i.e., for users who does not have a dedicated DWS station but has assigned TETRA user access).