All csl registered IDD service may automatically enjoy IDD 1678 service.
If you have not yet registered, please call our Customer Service Hotline 25 123 123 or visit our csl shop.
If you call back an incoming IDD call by retrieving the telephone number from the caller number display (e.g. from "Answered" or "Missed" call record), this IDD call will be charged at IDD 001 rates since you are using IDD 001 to make the call.
IDD 1678 charges will be calculated on a 1-minute incremental basis. Local airtime charges apply according to the Service Plan signed up.
The Charges quoted above are for reference only and subject to change from time to time without prior notice.
IDD1678 is not applicable to any “Supplementary Number Service”.
We reserve the right to amend any or all of these terms and conditions without prior notice. In case of dispute, our decision is final.
Please visit www.hkcsl.com for details of csl shop address, products, Service Plans, offers and terms and conditions.