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Aeta Audio Systems SCOOP 3 5ASystem User Manual

5asystem audio codec for transmission over the isdn
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SCOOP 3 5ASystem
Audio codec for transmission over the ISDN

User Manual

AETA AUDIO SYSTEMS S.A.S.
Parc technologique - Kepler 4 - 18-22, avenue Edouard Herriot - 92350 Le Plessis Robinson – FRANCE
Tél. +33 (0)1 41361200 – Fax +33 (0)1 41361269
Web :
http://www.aeta-audio.com
55 000 041 – Ed. D
SCOOP 3 5ASystem - User Manual
This document is the property of AAS and can not be duplicated without authorisation
January 2006
Scoop 3 5AS manual - Ed.D.doc

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Summary of Contents for Aeta Audio Systems SCOOP 3 5ASystem

  • Page 1: User Manual

    Tél. +33 (0)1 41361200 – Fax +33 (0)1 41361269 Web : http://www.aeta-audio.com 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 3: Table Of Contents

    Annexes ..........................64 6.1. Complements on the algorithms and protocols used ..............64 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 5: General

    1. General The SCOOP 3 5ASystem codec allows the bi-directional transmission of one or two audio signals with bit rate reduction, over one or two ISDN lines. The SCOOP 3 5ASystem is available in three versions: • SCOOP 3 5AS “7 kHz”...

  • Page 6: Functions

    16, 24, 32 or 48 kHz. The coding clock is also locked to the network clock. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 7: Encoding And Decoding

    5A stands for Aeta Audio Advanced Automatic Adjustment. This system makes it easier to set an ISDN connection, because the codec, on receiving a call, automatically adjusts itself, following the calling party algorithm and parameters.
  • Page 8 TDAC/G722 : TDAC encoding, G722 decoding (with SRT), running both in mono at 64 kbit/s ; this mode is symmetric to the previous one. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 9: Transmission Interface

    (for example, transmission fault); • “Minor” alarm. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 10: Audio Monitoring

    A display of the signal level ; • A test output on a stereo headphone jack. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 11: Auxiliary Functions

    3 In the particular case of the “asymmetric” TDAC modes, the data channel is unidirectional; data are transmitted only with the TDAC encoded audio, not with the return G722 SRT encoded audio. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 12 When using MPEG coding, all three auxiliary functions can be activated at the same time. Note that relay transmission and the coordination channel are only compatible with AETA Audio products, as these functions are not covered by the J52 recommendation.

  • Page 13: Operation

    The loop control interfaces are described in 3.2.2. and 5.1.10. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 14: Physical Description Of The Equipment

    3.2. Physical description of the equipment The SCOOP 3 5ASystem codec is housed in a 19 inches chassis of 1U height (44 mm or 1.75”); it includes a universal mains power supply. 3.2.1. Front panel All the elements needed for local control are on the front panel.
  • Page 15 This 9-pin female sub-D socket is an asynchronous serial interface port, usable for transmission of a bi- directional data channel (refer above to 2.6.1, Data channel). 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 16 Figure 3 - Rear panel SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 17 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 18: Equipment Configuration Parameters

    In double codec mode (only available mode for the 7 kHz version), each audio channel can use one of the configurations that are shaded in the table. Only codec 1 can then transmit a data channel or relays. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D...
  • Page 19 4 The data channel is unidirectional ; data are only transmitted in the TDAC encoded direction. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 20: Installation And Set Up

    13 and pinout in 5.1.9, p. 57). The digital audio signal at the codec input must then come from a device synchronised by this way. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 21: First Level Maintenance

    The front panel features a keyboard and display for the configuration and control of the equipment. Indicators and LED are available as well. Figure 4: Internal architecture of the SCOOP 3 5ASystem Optional modules (not visible on the figure) come in addition: AES/EBU interface module on the Audio board, auxiliary audio channel module on the motherboard.
  • Page 22 These links are not done in the factory. Caution: when establishing such links, the alarm contacts are no more isolated. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 23 No jumper must be set on other pins (TBxx) not referenced in the above list. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 24 Figure 6: Audio board configuration SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 25 The Audio out to Audio in loop (“Audio” loop) can be used for overall functional check, and also for aligning the overall chain. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 26: Detailed Operating Mode - User Interface

    In the following, the main operation modes are shortly designated as: “Single codec” or “Dual codec”. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 27: Equipment Start-Up

    “SYSTEM-SECURITY” menu and selecting “Lock now” (see further in 4.4.9, “System - Security” Menu). 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 28: Description Of The Keyboard

    5 Keys 0, 1 and 2 also serve as shortcut keys (see further in 4.4.3, “Communication” menu) SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 29: Description Of The Menus

    6 One exception is the “Tests” menu, as test loops can be activated or removed during a link. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 30: Main Menu

    MAIN MENU LOCAL ISDN CFG. The following sub-chapters describe the various secondary menus. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 31 (or not installed) 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 32 Access to information about the encoder(s) and decoder(s) is only possible if the concerned codec is on communication. Information on the second codec is only possible when in double codec mode. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D...
  • Page 33 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 34 “Network Parameters” Menu). The shortcuts are disabled for outgoing calls when the “loop control” connection mode is active. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 35 Sub-addresses are limited to four digits. The use of sub-addresses is optional; for details refer to 4.6.2, Outgoing call. Leave the field blank if not needed. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 36 However, the list of options for a given item may be restricted depending on the selected coding algorithm. This is detailed in the following notes. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 37 CODEC TYPE: this choice is not presented on the 7 kHz version, as only the double codec mode is available in this version. In the “Double G7xx” mode, the SCOOP 3 5ASystem behaves as two independent codecs (two independent links, while e.g. dual mono MPEG encodes both channels in the same frames and within the same transmission link), each with G711 or G722 coding in full- duplex.
  • Page 38 The choice lists may be limited depending on the capability of the current coding configuration (see 2.6, Auxiliary functions). SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 39 J52 allows for negotiation with a remote J52 codec, and the final settings may differ from those selected in the menu). 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 40 Whenever the line is released by the receiving party, the calling unit will redial and re-establish the link. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D...
  • Page 41 B channels. See also p. 46, Incoming calls acceptance. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 42 (“No”); this is the default setting. However, some international calls may mandate the encoding of this parameter. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 43 Sub-addresses are limited to four digits. Leave the entry blank if so sub-address is needed. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 44 TeleScoop software for controlling and supervising the codec. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 45 This parameter should not be confused with the source impedance of the analogue outputs (which is fixed, see 5.1.2, Analogue audio outputs). 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 46 (see further). SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 47 7 However, if loop 3 is activated while the ISDN line is idle, the unit will simulate a connection whenever it is asked to connect. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 48: Handling The Configuration Profiles

    A message (shortly) warns that the profile is being recalled, and the equipment starts again with the new profile parameters. 8 Except for test loops SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 49 The profile names can be programmed thanks to Express Profiles®, a software tool running on a PC running Windows 9x/ME/NT and connected to the SCOOP 3 5ASystem through a serial port. Express Profiles allows the management of the profiles, with following capabilities: •...

  • Page 50: Establishing Links

    9 In addition, some PABXs might take them into account for accepting or not outgoing calls. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 51 11 Possible if not mandatory for certain PABXs 12 This is true for direct connection to the public network 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 52 It is also possible to launch the two calls at the same time, by using shortcut key 0 (disabled in loop control mode). SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 53 When using the loop control mode, the line is released by de-activating the input loop. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 54 Note that capital letters are used for outgoing calls and small letters for incoming calls. The following diagrams show the call process in various cases. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 55 Outgoing call in single communication mode (20 kHz versions only) 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 56 Incoming call in single communication mode (auto answering, 20 kHz versions only) SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 57 The activation of this function and the configuration of its parameters can be found in the “Network Parameters” Menu (see 4.4.7, page 35) 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 58: Erasing And Resetting The Configuration

    Max. input/output level +16 dBu Audio output load impedance High impedance SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 59: Technical Characteristics

    Three RJ45 female sockets are available for the connection to the ISDN. They have standard pin-out. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 60 Menu) to activate the interface and to configure its baud rate (300 to 9600 bauds). However, the maximum allowed baud rate depends on the audio coding used (see 2.6.1 - Data channel). SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D...
  • Page 61 Not used Unused pins should not be connected to any external signal. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 62 200 mA capacity, which can be used e.g. to power the input loops or LED indicators connected to the output loops. SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...
  • Page 63 +5V DC supply, with 200 mA capacity, which can be used e.g. to power the input loops. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 64 Frame ground Coordination channel input (+) Coordination channel input (-) Frame ground SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 65: Audio Performance

    Taking the minimum group delay as reference, the group delay distortion on the AD/DA path is always less than 1 ms. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...

  • Page 66: Power Supply

    Its weight is about 4.7 kg. 13 Worst case for all types of algorithms; MPEG performs better than the others SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006 Scoop 3 5AS manual - Ed.D.doc...

  • Page 67: Environmental Characteristics

    5.7. Accessories and related products The SCOOP 3 5ASystem is delivered with a mains cord and one S0 cords for each available interface. Along with the coordination channel option, a specific cable is delivered, which provides XLR plugs for the coordination channel input and output (input on a female plug, output on a male plug).

  • Page 68: Annexes

    Psycho-acoustic modelling is used to keep the resulting sound distortion as low as possible despite this “degradation”. The bit rates available for ISO MPEG Layer II in the SCOOP 3 5ASystem are the following: Mono...
  • Page 69 At this moment, the equipment establishes the additional required B channels. If it is not possible to establish them, the link is released. 55 000 041 – Ed. D SCOOP 3 5ASystem - User Manual This document is the property of AAS and can not be duplicated without authorisation January 2006...
  • Page 70 • TDAC (Time Domain Aliasing Cancellation, MDCT-based algorithm, license from France Telecom CNET). SCOOP 3 5ASystem - User Manual 55 000 041 – Ed. D This document is the property of AAS and can not be duplicated without authorisation January 2006...

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