DUAL Talk - Internet Telephony Service Provider
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DUAL Talk - Internet Telephony Service Provider
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Accessing DUAL Talk

This page explains how to configure the Welltech range of FXS gateways, such as the WellGate 3502 and WellGate 3504.

  • Calling rates

    We offer three tariff and routing plans:

    - DUAL Talk Gold
    - DUAL Talk Silver
    - DUAL Talk LCR

    You can choose your tariff depending on your traffic profile and whether your priorities lie with low rates or high voice quality.

    See more >>

  • Discount scheme

    We reward higher spending customers with discounts of between 5% and 19% determined by their spending levels.

    More information >>

  • Wholesale rates

    Reseller and wholesale customers with high volume can use our "DUAL Talk LCR" or "DUAL Talk Silver" tariffs and are eligible for discounts of up to 19% depending on volume.

    See more >>

  • DUAL Softswitch

    This calling service and its online control panels are powered by DUAL Softswitch.

    More information >>

Welltech FXS gateways

Welltech produce a range of analogue gateways that offer excellent voice quality and fax support.  The details on this page relate to the WellGate 3504a 4 port FXS gateway (H.323 version) and should result in the best quality when used in conjunction with the DUAL Talk VoIP service.  For initial testing, place a call to 123 and confirm that you hear a test announcement.

H.323 configuration

Fixed IP address (use these settings if your IP address is fixed by your ISP)
  • Make sure the IP address you use has been added to your DUAL Talk account.  If you did not add this address while setting up your account, then add this IP address at the Access Methods area of My DUAL Talk; the online account management system.
  • Mode  =  Peer-to-peer
  • Default Gateway IP  =  95.154.218.4

Dynamic IP address (use these settings if your ISP regularly changes your public IP address)

  • Make sure that your DUAL Talk account has been configured for dynamic IP addresses.  If you did not do this while setting up your account, then set this option now at the Access Methods area of My DUAL Talk; the online account management system.
  • Mode  =  GK routed
  • Gatekeeper IP  = 95.154.218.4
  • 2nd Gatekeeper IP  =  [blank]
  • Gatekeeper Discovery  =  Disable
  • Registered Alias  =  1822 followed by your DUAL Talk account number followed by your DUAL Talk password (emailed to you when you set up your account).  For example, if your account number is 200100 and your password is 900100, set the Registered Alias to be 1822200100900100.

Line1 to Line4  =  Set these to any numbers.  The numbers must be unique so that the calls are displayed correctly in the DUAL Talk Call Shop Management System.

Support configuration

  • T.38 Fax =  Enable
  • T.38 Fax ECM  =  Enable
  • T.38 Fax ASN.1  =  Disable
  • Fax Redundancy Depth  =  0
  • Fast Start  =  Enable
  • H.245 Tunneling (sic)   =  Enable
  • H.245 Message After Fast Start  =  Disable
  • Early H.245  =  Disable
  • H.450  =  Disable

Voice configuration

  • Codec Priority
    1. G.729
    2. G.729a
    3. G.729b
    4. G.729ab
    5. G.711 A-Law
    6. G.711 mu-Law
    7. G.723.1
  • Frame Size
    • G.723.1  =  30
    • G.729  =  20
    • G.729a  =  20
    • G.711u  =  20
    • G.711a  =  20
    • G.729a  =  20
    • G.729ab  =  20
  • Echo Canceller  =  Enable
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Last modified: 10 May 2011

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