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For enquiries on SingTel ISDN service, please contact your designated Account Managers or call us at 1800-763-1111 (local toll-free) or (+65) 6763-1111 (overseas).
Alternatively, you may like to fax us your request at (+65) 6733-3008 or drop us an e-mail via www.singtel.com/salesenquiries
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