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TMP-Slis - Sistema di Intercettazione Collegamento Satellitare

DESCRIZIONE

Sistema di Monitoraggio dei canali di comunicazione via satellite

1. Panoramica
Il sistema TMP‐SLIS è pensato per il monitoraggio delle informazioni trasmesse attraverso canali di
comunicazione satellitare.
Le informazioni monitorate da questo sistema sono: Intelsat sistemi satellitari, Eutelsat, Arabsat, Domsat, Indosat ed altri operatori della comunicazione satellitare globale o regionale.

Le fonti di tali informazioni sono le seguenti:

  • dati di discorsi (colloqui telefonici);
  • messaggi Fax (analogici o digitali);
  • brevi messaggi di testo;
  • sessioni di comunicazione che utilizzano reti pubbliche ( Internet) o private;
  • comunicazioni di videoconferenza
2. Caratteristiche comuni
TMP‐SLIS prevede:
  • Analisi delle emissioni dei ripetitori satellitari con lo scopo di individuare le principali caratteristiche tecniche del segnale trasmesso, ovvero:
    • Tipo di modulazione;
    • Tipo di codifica di eliminazione del rumore;
    • Tipo di scrambling del segnale;
    • Presenza di livelli supplementari di elaborazione del segnale in ingresso;
    • Tipo di sistema di comunicazione usato per la trasmissione dell’informazione;
    • Tipo di apparecchiature del sistema di comunicazione;
    • Tipo di informazioni trasmesse;
  • Ricezione, elaborazione, e archiviazione delle informazioni continuativamente (24/7) , sulla base dei parametri di cui sopra;
  • Recupero delle informazioni memorizzate,completamente funzionale e flessibile , a richiesta degli utenti;
  • Generazione dei rapporti di valutazione e le raccomandazioni per le informazioni raccolte.

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. 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: 800‐2150 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: 100‐240V, 50/60 Hz.

Overall view of the subsystem is shown in Fig. 1

 tmp-slis01.jpg

 Figure 1

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 950‐ 2150 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: 950–2150 MHz;
  • Number of simultaneously processed E1 emissions: up to 4 for one processing block;
  • Speed of processed flows: 64–2048 kbps;
  • Type of processed framing structure:
    • G.732;
    • G.732 (IDR);
    • G.733 a, b;
    • G.733 a, b (IDR);
    • IBS;
    • Mono‐flow;
  • Type of processing equipment:
    • PCM;
    • ADPCM;
    • PCME;
    • OKI TC2000;
    • ESI DTX‐240;
    • ESI DTX‐360А (G.763);
    • ESI DTX‐360B (G.728);
    • ESI DTX ‐600 (AC‐CELP);
    • Mitsubishi DX‐3000 (G.763);
    • Mitsubishi DX‐5000 (G.763‐G.766);
    • Mitsubishi DX‐7000A (G.729);
    • Alcatel Celtic‐3G;
    • NEC NCM‐501;
  • Provides:
    • Automatic detection of framing structure and equipment type for the received signal;
    • Automatic identification and processing of commanding channels;
    • Automatic identification and processing of common signaling channels;
    • Automatic detection of the beginning and end of communication sessions;
    • Automatic detection of information type in a communication session and its referencing to known phone numbers (when available);
    • Preprocessing of received sessions according to the specified selection criteria;
  • Power supply: 100‐240V, 50/60 Hz.

Overall view of the subsystem is shown in Fig. 2

Figure 2

 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 950‐ 2150 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: 950–2150 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:
      • Automatic identification of communication sessions on the basis of preassigned multiplexing parameters of communication channels;
    • For dynamic multiplexers:
      • Automatic detection and processing of commanding channels;
      • 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: 100‐240V, 50/60 Hz.

Overall view of the subsystem is shown in Fig. 3

Figure 3

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 950‐ 2150 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: 950–2150 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 43 333 kbps;
  • Processed protocols:
    • 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;
    • Application level: RTP, RTCP, MGCP, DSS1, FTP, HTTP, IMAP4, Lotus Note, NNTP, POP3, SMTP, X.400, MSN, AOL, UUCP, IMAP4;
  • Types of identified communications:

Data transmission protocols are processed according to the tree below:

  • The following functions are provided:
    • Automatic recognition of most known data transmission protocols of different architecture and manufacturers, as well as of those detected in course of analysis;
    • Identification of packet telephony sessions (VoIP, VoFR, nonstandard), referring of identified telephone numbers to sessions;
    • Sorting and selection of messages by key words, including searching in MSWORD, EXCEL, ACROBAT READER documents;
    • Detection of the information flow direction (from IP‐ and domain addresses);
    • Classification and archiving WEB‐pages (according to classification list supplied by the user);
    • Employment of different versions of address selection;
  • Power supply: 100‐240V, 50/60 Hz.

Overall view of the subsystem is shown in Fig. 4

 Figure 4

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 950‐ 2150 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:

  1. Industrial cabinets with power supply and aeration systems;
  2. Matrix switches;
  3. Blocks for processing of central stations signals (outbound);
  4. Blocks for processing of mobile stations signals (inbound);
  5. Data storage servers;
  6. Uninterruptible power supply units;
  7. Local control consoles;
  8. Remote control consoles.

Subsystem specifications:

  • Frequency range: 950–2150 MHz;
  • Speed of processed signals:
    • For outbound signals – up to 43 mbps;
    • 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:
    • NEXTAR BOD DAMA
    • NEXTAR BOD PAMA
    • Hughes PES;
    • Hughes TES;
    • Hughes DirecWay;
    • Gilat SkyEdge;
    • DVB‐RCS;
  • Preliminary analysis of the signals:
    • Frequency analysis;
    • Spectral analysis;
    • Automatic search procedures for primary signal identifiers (central frequency and modulation speed);
    • Visual and qualitative evaluation of the received signal: measurement of bit error, signal‐to‐noise ratio, etc.;
    • Filing of the signal for subsequent off‐line analysis of its structure.
  • Signals reception:
    • Demodulation: BPSK, QPSK, OQPSK, 8PSK QAM‐16 in 9.6 kbps to 43 Mbps modulation speed band;
    • 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;
    • Decoding of Reed‐Solomon (RSC) codes;

Overall view of the subsystem is shown in Fig. 5

Figure 5

 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).

Figure 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).

Figure 7

All subsystems are housed in a 600x900 industrial cabinet, 42U height – a minimum healthy cell in a system (Fig. 8).

 Figure 8

The outward appearance of the industrial cabinet with installed signal demodulation blocks is shown in Fig. 9

 Figure 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)

 Figure 10

  • Control console (Fig. 11)

 Figure 11

  • Mains switch/concentrator (Fig. 12)

Figure 12

  • Data storage server (Fig. 13)

Figure 13

  • Source of uninterruptible power supply (Fig. 14)

Figure 14

  • equipment specific to each system in form of processing block (Fig. 15)

Figure 15

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

 Figure 16

 Figure 17

Figure 18

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
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