What is ZONE GlobalDial service?

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ZONE GlobalDial is tailor-made for users who travel overseas frequently.  It allows you to stay in contact when you are overseas without incurring high roaming charges or high IDD rates charged by the overseas operator.  The pre-requisite to use this service is to have an overseas SIM card and preferably two mobile phones.
ZONE GlobalDial has two anti-roaming services:
o    DialForward allows you to forward all your calls from your Singapore telephone mobile to a designated overseas number. 
o    Call-Me-Back facilitates all your outgoing calls.