This page offers a basic configuration for adding a DUAL Talk trunk group to an Asterisk switch for outbound calling.

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• 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.

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• Discount scheme

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

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• 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.

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• DUAL Softswitch

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

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If your public IP address is static, you should add that IP address to the Access Methods page of My DUAL Talk.

[General]
register => [Account number]:[Password]@sip.dualtalk.com

Define the DUAL Talk route:

[dualtalk]
type=peer
username=[Account number]
secret=[Password]
host=sip.dualtalk.com
port=5060
insecure=very
disallow=all
allow=g729
allow=g723
canreinvite=no
dtmfmode=info

Replace [Account number] with your DUAL Talk account number and replace [Password] with your DUAL Talk password.

You will need to obtain and install licences for the G.723 or G.729 codec.  DUAL Talk does not support G.711.

exten => _0.,1,Dial(SIP/${EXTEN}@dualtalk,60)
exten => _0.,2,Hangup()