High quality no longer equivalent to high tariffs. We at CTI aim high by offering the simplest and the most convenient way for calling to overseas, with service at superior quality but competitively-priced.

Our international direct dial service, IDD1666, allows for quality and instant connection when making overseas calls. When you wish to make a call, simply enter the access code 1666 followed by the country code, area code and local telephone number, we will put you through right away.

Registration of Service
If you are an existing customer and wish to add in other telephone/fax numbers, just pre-register your telephone/fax number with IDD1666 Service by calling our Service Hotline at 2926 1234 and you can use IDD1666 Service within 24 hours. (Telephone/fax numbers that have been registered for IDD1666 need not to be registered again.)

If you have not registered to CTI or IDD1666 service before but wish to experience the superior service of IDD1666, please contact our Service hotline at 3560 0888 or complete the online registration form. Register now!