The device works at exceptionally low power (<1W) and can record of the voice communication of two DWSs simultaneously because the CRU2-AN has two separated logical voice recorders. As a special feature the equipment can be configured as a stereo voice recorder and can record the two directions of a call into a stereo file as left/right channels.
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).
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).
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 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 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
- playback of records from the server
- introduction of call related data (e.g. time of call, calling and called numbers)
- showing the time function of the audio record
- zoom-in and zoom-out within the time function
- events within a communication
- quick navigation possibility
- application of different filtering parameters
- export records to external data medias
LI Management Systems
HUNGAROCOM LIMS, in cooperation with the immanent monitoring function (INI) used by the electronic communications service provider, monitors all types of public communication services in real time including telephone (VoIP, VoLTE) and video calls, messages (SMS, MMS), fax, e-mails and other data communication services. It supports monitoring of 2G (GSM, CDMA, GPRS), 3G (UMTS), 4G (LTE) and 5G wireless networks of all networks, as well as PSTN, IMS and Cable based wired networks.
Hand over interfaces (HI) are a three-port structure where administrative information (HI1), intercept related information (HI2), and communications content (CC) are logically separated.
- Hot standby and geo-redundant solutions.
- It fulfils the following international and local standards:
- ETSI: ETSI TS 101 671 (voice), ETSI TS 101 331 (általános), ETSI ES 201 158 (általános), ETSI TS 102 232-1 to 102 232-7 (IP, e-mail, VoIP)
- ETSI: TS 133 126, TS 133 127, TS 133 128, TS 103 120 (fejlesztés alatt)
- PacketCable: PacketCable v1.5
- It handles the following PSTN and VoIP protocols:
SS7 ISUP; ISDN; SIP/UDP; RTP/UDP.
- In case of VoLTE the following transcoding are handled:
G711A, G711u, G.729, NB, WB, SWB, FB, AMR, AMR-WB, EVS.
Mobile Recording Gateway
- The recording and archiving of the conversations of the assigned mobile telephones for a possible later use.
- The flexible assignment of the available parties for calls within or outside the mobile network.
- The Central data base server located at the mobile operator’s site which is common for more organizations joining the service to provide a better utilization. The individual organizations are handled fully separately.
- The Network and storage server connected to the mobile operator’s network to provide temporary storage of speech and its call related data.
- Archive server located in the organization’s site to store and archive the speech and call related data belonging to the mobile phones of the relevant organization.
- Workstations at the organization’s site. One workstation serves for assigning the control conditions of the given mobile telephone, the others serve for the real time monitoring and the playback of the recorded conversations. The assignment is not a continuous activity thus this workstation can also be used for monitoring and playback purposes. The number of workstations is dependent on the traffic requirements.
The telephone number of the relevant mobile phone and the telephone numbers of its possible partners are fixed from the assigning workstation. These data are stored on the central data base server. The system assures that from the assigned mobile telephone no other numbers can be called.
About the fact of recording the conversation the talking parties receive warning voice announcement (switchable function).
When a call is initiated or received on the mobile telephone assigned, a signal arrives for the operator of the relevant organization. The operator can decide whether he wants to monitor the call in real time or it is for a later playback after recording. All conversations and their call related data (date of the call, called number holding time etc.) are stored on the Mobile network and storage server or on the Archive server located in the organization’s site.
The system assures that only the authorized operators of the relevant organization can have access to its own employee’s records and data.
It is possible to archive certain conversations for an optional media from the Archive server of the organization. Archiving can happen from time to time as well.
The speech records are encrypted (with organization specific master key) and electronically signed which assures that the records belonging to a given organization can be played back by the authorized operators of the same organization only. The playback is only possible by a dedicated software and appropriate authorization.
Different statistics can be prepared for the organizations about the calls and their call relations.
For application of the system compliance is necessary with the mobile operator. The regulations and law regarding personal data handling must also be considered!
- Claricor / Taira
- Individual Communications Recorder For Dispatcher Workstations (CRU-1V)
- Centralized Communications Recording
- Lawful Interception
For small TETRA networks where Claricor/Taira DXT(s) is(are) deployed, it is required to provide a compact communication recording solution, which integrates TCS server, storage and client functionality on a single server machine. This product line shall provide all functionalities as defined in this paper below and flexibility and scalability to be applicable for different customer’s need if any. The next Figure introduces the location of the communications recording application in the TETRA system.
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
The simplest non redundant version is introduced in the Figure. AR-C server integrates two virtual machines the Recording server and the TCS server.
Configurable operating modes:
- active-standby, when one server handles all traffic and only switches to another in case of an error
- load sharing, where in load sharing, one server handles DXT1 traffic and the other handles DXT2 traffic
- full parallel when both servers handle both DXT traffic.
The main characteristics of the device are the following:
- recording of voice communications
- start/stop of the recording by means of line signals, or VOX detector
- recording of SDS and Status messages
- simultaneous recording and playback is possible
- the communication information is stored on an encrypted way
- voice and call related data are stored in the same file with an inseparable way
- the recorded data is guarded against manipulation and sabotage by „electronic signature”
- filtering of information according to the customer’s need
- export possibility of the recorded information in standard WAV file
- remote access via LAN or WAN
- remote operation and management of the devices
- connection possibility to centralised data base servers and centralised storage
- connection possibility of external VGA monitor
- size: length: 300 mm/ width: 165 mm, height: 50 mm
- power supply: 12V DC/220VAC with 12 V power supply unit
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).
CMS-T is an universal robust system for nationwide networks applications however a simplified versatile economic version was also developed which fits better to the requirements of smaller target networks. This is a special application for the very complex function of the TETRA system.
- individual calls
- group calls
- SDS, Status messages
- packet data
- tracking data
- subscriber related events
- Storage of intercepted information for the authorized time.
- Composition of target structure.
- Playback of communication content with the relevant call related information (CRI).
- Real-time surveillance. The real-time playback is a no wait process.
- Report writing. The function is supported by an integrated word processor software.
- Copies of intercepted information. Upon request designated sessions of the recorded information are copied on different storage media for offline use. Such media include CD, DVD. etc.
- Long-term archive. Sessions or the full contents of communication of designated information sources are stored in the long-term archive for later use and for authentic evidence purposes.