Satellite Link Interception System TMP-Slis Monitoring system for satellite communication channels

Transcription

1 Satellite Link Interception System TMP-Slis Monitoring system for satellite communication channels 1. Overview The TMP SLIS system is intended for monitoring information transmitted through satellite communication channels. The information objects monitored by this system are: satellite systems Intelsat, Eutelsat, Arabsat, Domsat, Indosat and other global or regional satellite communication operators. The information sources in these objects are as follows: Speech data (telephone talks); Fax messages (analogue or digital); Short text messages; Communication sessions using public (the Internet) or private networks; Videoconferencing communications. 2. Common characteristics TMP-SLIS provides: Emission analysis of satellite repeaters with the purpose to identify principal technical characteristics of transmitted signals, namely: o Type of modulation; o Type of noise eliminating encoding; o Type of signal scrambling; o Presence of input signal supplementary processing levels; o Type of communication system used for information transmission; o Type of communication system equipment; o Type of transmitted information; Continuous (24/7) reception, processing and storage of information on the basis of the above parameters; Fully functional and flexible retrieval of stored information on user demand; Generation of assessment reports and recommendations for the accumulated information. 3. System structure Functionally the TMP SLIS system incorporates 7 independent subsystems used to receive and process most common systems employed in satellite communications: a. TMP-SLIS RF System for reception, amplification and transmission of high frequency signals coming from satellite antenna assemblies to reception and processing systems, as described below; b. TMP-SLIS E1 Reception and processing subsystem for E1 channels. Provides reception and processing of high speed communication lines, corresponding to E1/T1 standard, and their derivatives; c. TMP-SLIS MX Subsystem for reception and processing of static and dynamic multiplexing channels. 1

2 Provides reception and processing of a wide range of communication lines (as regards speed and type of equipment); d. TMP-SLIS DI Subsystem for reception and processing of data transmission channels. Provides for reception and processing of communication lines used in public and private computer networks; e. TMP-SLIS VS Subsystem for reception and processing of VSAT communication channels. Provides for reception and processing of communication lines, only corresponding to different standards of the global VSAT system; f. TMP-SLIS GA Subsystem for reception and processing of satellite communication channels used for transporting of information of GSM operators (GSM A, Abis). Provides reception and processing of communication lines transmitting information between base stations and switching centers of cellular operators; g. TMP-SLIS DB Subsystem for accumulation and storage of received information. Provides long term storage of organized information, sorting and processing of operator enquiries, generation of reports and recommendation. 4. Subsystems description a. TMP-SLIS RF The subsystem is intended for routing of a high frequency signal coming from the antenna system to the reception and processing subsystems. The system provides: required signal level at input of processing devices; required number of input signal sources depending on the number of processing devices in the subsystems; The subsystem incorporates: 1) Linear amplifiers of the signal; 2) Matrix switches with the switching subsystem; 3) Set of high frequency connection cables. Frequency range: Hz; Amplification factor: 0 24 db with a possibility of continuous adjustment; Connector types: "BNC, 50 Ohm; Possible input/output configurations: 4x4, 4x8, 4x12, 4x16, 8x4, 8x8, 8x12, 8x16, 12x4, 12x8, 12x12, 12x16, 16x4, 16x8, 16x12, 16x16; Power supply: V, 50/60 Hz. Overall view of the subsystem is shown in Fig. 1 2

3 b. TMP-SLIS E1 The subsystem is intended for reception and processing of information transmitted via high speed communication lines, corresponding to E1/N1 standard, and their derivatives. The system provides: Reception and processing of high frequency input signals in the MHz range, coming form different antenna systems; Commutation of required antenna systems to processing devices; Tuning to satellite emissions in a given band according to parameters identified using the subsystem TMP SLIS TA, or other criteria; Reception, identification and processing of separate communication sessions transmitted through E1/N1 channels; Prefiltering and selection of identified communication sessions according to the operator s criteria; Transferring selected sessions to the TMP SLIS DB subsystem for further processing. The subsystem incorporates: 1) Industrial cabinets with power supply and aeration systems; 2) Matrix switches; 3) Signal processing blocks; 4) Data storage servers; 5) Uninterruptible power supply units; 6) Local control consoles; 7) Remote control consoles. Subsystem specifications: Frequency range: MHz; Number of simultaneously processed E1 emissions: up to 4 for one processing block; Speed of processed flows: kbps; Type of processed framing structure: o G.732; o G.732 (IDR); o G.733 a, b; o G.733 a, b (IDR); o IBS; o Mono flow; 3

4 Type of processing equipment: o PCM; o ADPCM; o PCME; o OKI TC2000; o ESI DTX 240; o ESI DTX 360А (G.763); o ESI DTX 360B (G.728); o ESI DTX 600 (AC CELP); o Mitsubishi DX 3000 (G.763); o Mitsubishi DX 5000 (G.763 G.766); o Mitsubishi DX 7000A (G.729); o Alcatel Celtic 3G; o NEC NCM 501; Provides: o Automatic detection of framing structure and equipment type for the received signal; o Automatic identification and processing of commanding channels; o Automatic identification and processing of common signaling channels; o Automatic detection of the beginning and end of communication sessions; o Automatic detection of information type in a communication session and its referencing to known phone numbers (when available); o Preprocessing of received sessions according to the specified selection criteria; Power supply: V, 50/60 Hz. Overall view of the subsystem is shown in Fig. 2 4

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6 c. TMP-SLIS MX The subsystem is intended for reception and processing of information transmitted via multiplex communication lines. It provides: Reception and processing of high frequency input signals in the MHz range, coming from different antenna systems; Commutation of the required antenna system to processing devices; Tuning to satellite emissions in a given band according to parameters identified using the subsystem TMP SLIS TA, or other criteria; Reception, identification and processing of separate communication sessions transmitted through multiplexed communication channels; Prefiltering and selection of identified communication sessions according to the operator s criteria; Transferring selected sessions to the TMP SLIS DB subsystem for further processing. The subsystem incorporates: 1) Industrial cabinets with power supply and aeration systems; 2) Matrix switches; 3) Signal processing blocks; 4) Data storage servers; 5) Uninterruptible power supply units; 6) Local control consoles; 7) Remote control consoles. Subsystem specifications: Frequency range: MHz; Number of simultaneously processed multiplex emissions: up to 4 for one processing block; Speed of processed flows: 9,6 43,333 kbps; Type of processed multiplex structures: Static (by a template); Static (by structure); Dynamic; Versions of handled equipment; Static compaction, transmission period, bit: 8, 16, 27, 32, 48, 64, 80, 128, 160, 193, 216, 156, 384, 512, 624, 700, 864, 1920, 2048, 3456,3870, 4160, 5120, 6400, 19200; Dynamic: IBA Alcatel (DX 60) Nuera (CS 8000, Access Plus 100, Access Plus 200); Provides: For static multiplexers: o Automatic identification of communication sessions on the basis of preassigned multiplexing parameters of communication channels; For dynamic multiplexers: o Automatic detection and processing of commanding channels; o Automatic identification of communication sessions; Automatic detection of the beginning and end of communication sessions; Automatic detection of information type in communication session and its referencing to known phone numbers (when available); Preprocessing of received sessions according to the specified selection criteria; Power supply: V, 50/60 Hz. 6

7 Overall view of the subsystem is shown in Fig. 3 7

8 d. TMP-SLIS DI The subsystem is intended to receive and process information transmitted through communication lines used in public and private computer networks (hereinafter data transmission (DT)). The subsystem provides: Reception and processing of high frequency input signals in the MHz range, coming form different antenna systems; Commutation of required antenna systems to processing devices; Tuning to satellite emissions in a given band according to parameters determined using the subsystem TMP SLIS TA, or other criteria; Reception, identification and processing of separate communication sessions transmitted through computer communication lines; Prefiltering and selection of predefined communication sessions according to the operator s criteria; Transferring selected sessions to the TMP SLIS DB subsystem for further processing. The subsystem incorporates: 1) Industrial cabinets with power supply and aeration systems; 2) Matrix switches; 3) Blocks of primary signal processing; 4) Blocks of secondary processing; 5) Data storage servers; 6) Uninterruptible power supply units; 7) Local control consoles; 8) Remote control consoles. Subsystem specifications: Frequency range: MHz; Number of simultaneously processed DT: o Speed up to 1024 kbps 4 for one preprocessing block; o Speed from 1024 kbps to 2048 kbps 2 for one preprocessing block; o Speed above 2048 kbps 1 for one preprocessing block; Speed of processed flows: from 9.6 to kbps; Processed protocols: o Channel, network and transportation levels: ATM AAL5, Ethernet (IEEE 802.2/802.3), FR, Bridged FR, FRF.3.2 Multiprotocol Encapsulation, FRF.12 Fragmentation, FRF.9 LZS Compression, Cisco 0x1999/98 Compressed IPFHC, Q.922 Control, Q.922 Control+Pad, SNAP Ethertype, SNAP IEEE 802.1, LLC/SNAP MPOA, ODLC, IDC5, PPP (Van Jacobson {0x002D, x002f}, Multi Link {0x003D}, Compressed Datagram LZS {Microsoft PPC, Predictor, Deflate} {0x00FD}, RTP IPHC {0x0061, 0x0063, 0x0065, 0x0067, 0x0069, 0x2063, 0x2065, 0x2067, 0x2069}, BCP Ethernet), Router, Banyan Vines, LMI, CDP, LCP, IP v4, ICMP, IPIP, TCP, UDP, GRE, transport 0xFE; o Application level: RTP, RTCP, MGCP, DSS1, FTP, HTTP, IMAP4, Lotus Note, NNTP, POP3, SMTP, X.400, MSN, AOL, UUCP, IMAP4; Types of identified communications: RTP PayloadType HTTP & other PCMU (A ).323.sch.sv4cpio 1016 (A ) AddIn.sct.sv4crc G (A ).ps.sit.tar GSM (A ).aiff.spl.tcl G723 (A ).application.sst.tex DVI4 (A ).asf.stl.texinfo 8

9 DVI4 (A ).txt.swf.t LPC (A ).au.tiff.me PCMA (A ).avi.uls.ms G722 (A ).bmp.vcf.ustar L16 (A ).cat.vcproj.src L16 (A ).cdf.vsd.xhtml QCELP (A ).cer.wav.xslt MPA (A 90000) crl.wax.ram G728 (A ).css.wm.rm DVI4 (A ).xls.wma.pdb DVI4 (A ).deploy.wmd.xyz G729 (A ).bin.wmp.cgm CelB (V 90000).doc.wms.ief JPEG (V 90000).dtd.wmv.svg Nv (V 90000).edn.wmx.djvu H261 (V 90000).eml.wmz.wbmp MPV (V 90000).etd.wpl.ras MP2T (AV 90000).fdf.wvx.pnm H263 (V 90000).fif.xbm.pbm DV (90000).gif.xdp.pgm 3D VCR (525 60).hqx.xfd.ppm 306M (525 60).hta.xfdf.rgb.htc.xml.xpm.html.gz.xwd.htt.zip.igs.ico.mov.wrl.ics.rar.rtx.iii.dwg.sgml.infopathxml.cab.tsv.ins.ez.wml.iqy.atom.wmls.IVF.hqx.etx.jpg.cpt.mxu.latex.mathml.movie.mpeg.oda.ice.m3u.ogg.exe.man.rdf.rtf.mdi.smi.msg.mid.gram.iso.mp3.grxml.asx.mpf.wbxml.arj.nmw.wmlc.mdb.odc.wmlsc.setpay.p10.vxml.setreg.p12.bcpio.ssm.p7b.vcd.rms.p7m.pgn.rnx.p7r.cpio.rjs.p7s.csh.rjt.pdf.dcr.rmj 9

10 .pdx.dvi.rmx.pko.gtar.rmp.pls.hdf.rsml.png.js.z Data transmission protocols are processed according to the tree below: The following functions are provided: o Automatic recognition of most known data transmission protocols of different architecture and manufacturers, as well as of those detected in course of analysis; o Identification of packet telephony sessions (VoIP, VoFR, nonstandard), referring of identified telephone numbers to sessions; o Sorting and selection of messages by key words, including searching in MSWORD, EXCEL, ACROBAT READER documents; o Detection of the information flow direction (from IP and domain addresses); o Classification and archiving WEB pages (according to classification list supplied by the user); o Employment of different versions of address selection; Power supply: V, 50/60 Hz. 10

11 Overall view of the subsystem is shown in Fig. 4 11

12 e. TMP-SLIS VS The subsystem is intended for reception and processing of information transmitted through VSAT satellite communication system. It provides: Reception and processing of high frequency input signals in the MHz range, coming form different antenna systems; Commutation of the required antenna system to processing devices; Tuning to satellite emissions in a given band according to parameters determined using the subsystem TMP SLIS TA, or other criteria; Reception, identification and processing of separate communication sessions transmitted through multiplexed communication channels; Prefiltering and selection of identified communication sessions according to the operator s criteria; Transferring selected sessions to the TMP SLIS DB subsystem for further processing. The subsystem incorporates: 8) Industrial cabinets with power supply and aeration systems; 9) Matrix switches; 10) Blocks for processing of central stations signals (outbound); 11) Blocks for processing of mobile stations signals (inbound); 12) Data storage servers; 13) Uninterruptible power supply units; 14) Local control consoles; 15) Remote control consoles. Subsystem specifications: Frequency range: MHz; Speed of processed signals: o For outbound signals up to 43 mbps; o For inbound signals up to 128 kbps; Number of processed signals: o For outbound signals 1 per 1 processing block; o For unbound signals up to 4 per 1 processing block; Types of received equipment: o NEXTAR BOD DAMA o NEXTAR BOD PAMA o Hughes PES; o Hughes TES; o Hughes DirecWay; o Gilat SkyEdge; o DVB RCS; Preliminary analysis of the signals: o Frequency analysis; o Spectral analysis; o Automatic search procedures for primary signal identifiers (central frequency and modulation speed); o Visual and qualitative evaluation of the received signal: measurement of bit error, signal to noise ratio, etc.; o Filing of the signal for subsequent off line analysis of its structure. Signals reception: o Demodulation: BPSK, QPSK, OQPSK, 8PSK QAM 16 in 9.6 kbps to 43 Mbps modulation speed band; o Error control decoding of non systematic (NCC) and systematic (SCC) 1/2, 3/4 and 7/8 convolution codes for BPSK, QPSK, OQPSK, 2/3 trellis codes 8PSK, and NCC codes for QAM 16 signals; o Decoding of Reed Solomon (RSC) codes; 12

13 o Decoding of two dimensional and three dimensional turbo codes (TCC); o Digital filtering of signals with a specified amplitude frequency characteristic; o Differential decoding and descrambling of signals; Processing of communication sessions: o Preprocessing of voice and fax messages; o Generation of communication sessions when processing data transmission channels and video conferences; o Automatic detection of the beginning and end of communication sessions; o Automatic detection of the information type in a communication session, its referencing to known phone numbers (when available); o Preprocessing of received sessions according to the specified selection criteria; Power supply: V, 50/60 Hz. 13

14 Overall view of the subsystem is shown in Fig. 5 14

15 5. Outside appearance of devices and blocks The TMP SLIS system and its components are of modular design. Initially, an L band signal is amplified by linear amplifiers (Fig. 6). Then the signal is switched depending on its source and functions by an active matrix switch to a required number of subsystems (Fig. 7). All subsystems are housed in a 600x900 industrial cabinet, 42U height a minimum healthy cell in a system (Fig. 8). 15

16 The outward appearance of the industrial cabinet with installed signal demodulation blocks is shown in Fig. 9 The cabinet should be equipped with aeration and power distribution systems. Each industrial cabinet houses the following standard equipment: Signal active splitter switch (Fig. 10) Control console (Fig. 11) 16

17 Mains switch/concentrator (Fig. 12) Data storage server (Fig. 13) Source of uninterruptible power supply (Fig. 14) equipment specific to each system in form of processing block (Fig. 15) 17

18 Processing blocks are industrial PCs (Fig. 16) provided with high speed demodulator boards (Fig. 17) and digital signal processing boards (Fig. 18). 18

19 Examples of special software operations Monitoring of speech sessions Processing of analogue fax transmissions Review of processed fax transmissions DVB RCS signal processing subsystem Videoconference processing subsystem DCME processing transmission TMP-SLIS DB operation 19