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  1. testcentre

    NEAX2000IPS AP00B

    Thankyou for this, but this is the procedure i have been using without success. i tried it again now with the same (lack of) result. What is interesting is that the messages do not appear at the central office, but if CM08>800 is then changed to 0, the messages will then magically be received...
  2. testcentre

    NEAX2000IPS AP00B

    i am attempting to use an AP00B in a NEAX2000IPS that is local office in a network with Centralized Billing. According to the book it should be possible and work uisng the AP00B to buffer billing records, but i find that with the AP00B installed that billing messages are not sent to the central...
  3. testcentre

    QSIG Parameters

    1. Framing and timing errors are indicative of a synchronizing problem between the two PABX. Do you have SCEXI set at the appropriate PABX for receiving the Frame synch? This should only be set at one end of the link, the other end being the Clocking Master. Are both PABX using CRC-4...
  4. testcentre

    MFC R2

    Can you supply the MFC signal defnitions used in Cambodia?
  5. testcentre

    bc7 SL60

    Yes it is possible to provide a basic QSIG link on MD110 from BC6.0 onwards but it will only provide for simple call handling with number presentation/restriction facilities. There is no enhanced networking available. Note also that the QSIG is ISO QSIG (Codeset 4), not ETSI QSIG. i used the...
  6. testcentre

    FCT - nokia 22

    i assume you are using a Nokia Fixed Wireless Terminal connected to a trunk (Ring/Loop, TL11 or similar) on the MD110. If this is so, then you should check the following: 1. Is the trunk looking for an Answer signal (polarity reversal) when the cellular call is connected - check in Route...
  7. testcentre

    ISDN transmission

    You may like to explore any of the following: - SHDSL modems in 2-wire or 4-wire mode with one or more SHDSL repeaters (Lucent Cellpipe, Verilink Wansuite, RAD LA-110, etc); - HDSL modems in 2-wire or 4-wire mode (Nokia, Pair Gain systems, etc); - Use recovered PCM Digital Line Terminals as...
  8. testcentre

    CRC on Bc9 Q-sig

    Fouesnant In response to your question about the purpose of CRC4, the following may assist. With the introduction of ISDN it is possible for users to transmit data over a 64 kbit/s clear channel. The problem with this is that it is possible for user equipment to transmit the bit pattern...
  9. testcentre

    line-length for TLU76 twisted pair?

    Note that the distance is realted to conductor gauge, the lighter the gauge the shorter the distance. It is more properly expressed as the length that gives a 6 dB loss at 1024 kHz.
  10. testcentre

    MD110 electronic equipment lifetime eg. GJUG5, GJUL4, PU4DC?

    Reliability and failure are statistical. These are normally expressed in mean time between failure as being so many hours, months or years. This means that the more of an item in service in the world, then the more the total number of failures that can be expected, and will actually occur...
  11. testcentre

    MD CAS SIGNAL DECODER NEEDED

    The following test instruments can be used for CAS 2,048 Mbit/s monitoring: Ameritec AM-8e Elmi EPR-31 Elmi EPC-91 STR PCMX-30
  12. testcentre

    External Dialtone

    i would check the setting of the SIG parameter in the route category.
  13. testcentre

    Problem with TLU20

    Suggest you check the following: 1. Are you sending sufficient digits to the Nortel PABX? 2. Is the Nortel set up for Decadic or DTMF digit reception? 3. Is the MD110 looking for Dial Tone before sending digits to the MD110?
  14. testcentre

    BC7.2.2 Vs. TLU76/1

    i currently have a network with BC.7.2.1 using TLU76/1 with QSIG to a BP250 R12. Basic call setup operates satisfactorily but there is little functionality apart from this. In this network the MD110 is acting as the ISDN Master on the link to the BP250. The MD110 is also the clock source for...
  15. testcentre

    Dial Tone Loud & Noisy

    Singhbrindisi: Can you still dial in Decadic Pulses to set up calls when you encounter the dialling failure?
  16. testcentre

    tlu75 collision

    In some countries the carrier may be able to provide a bothway guard facility to minimise call collision. In Australia and some other countries (Denmark, Sweden) Reversal on Seizure may be used on Ringdown analogue trunks.
  17. testcentre

    Dial Tone Loud & Noisy

    i suspect that there is a problem in the Transmission Matrix settings that is overloading the codecs on the analogue extension cards and in the digital extension phones. Check the TRM values in the old and new software loads. Also is speech distorted?
  18. testcentre

    MFC R2 MD110 to MD110

    When using MFC R2 signalling, it is important that you correctly identify the type of R2 in use in the network to which you are connected. There are two basic types of R2 signalling, complete and simplified. However, there are also many variants in each of these and it is essential that you...
  19. testcentre

    how many wires

    The number of wires necessary for this connexion is dependant on whether you are using twowire or fourwire voice path - if a twowire voice path, then a total of four wires are required (two voice plus E and M); if a fourwire voice path is used, then a total of six wires are used (four voice...

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