General Enquiries
  1. What is Singtel Business Digital Line (BDL)?
    Singtel Business Digital Line (BDL) is a basic telephony service offered to business customers using Singtel’s fibre infrastructure - SingNet eVolve Fibre Broadband.
  2. How does Singtel Business Digital Line work?
    Singtel Business Digital Line (BDL) requires a fibre connection, SingNet eVolve Fibre Broadband, which is connected to the ONT (Optical Network Termination) and must be turned-on at all times in order for BDL to work.
  3. Why do I need SingNet eVolve Fibre Broadband when I only need a Business Digital Line service?
    In order for Singtel Business Digital Line (BDL) to work, there must be a fibre connection thus SingNet eVolve Fibre Broadband is required.
  4. Are there any options for taking Business Digital Line standalone without eVolve Fibre Broadband?
    No. In order for Singtel Business Digital Line (BDL) to work, there must be a fibre connection thus SingNet eVolve Fibre Broadband is required. BDL is not available as a standalone service.
  5. Can I convert my current Singtel Business Fixed Line (analogue/copper line) to Business Digital Line?
    Yes, you can. You may call 1606 to convert your DEL to BDL
  6. What are the Add-Ons available for the Business Digital Line service? You may choose from the following:

    You may choose from the following:

    • Call Transfer
    • Call Waiting
    • Caller ID
    • Caller Number Non-Display
    • Phone Lock
    • Three-Way Calling
    • VoiceMail
  7. What are the advantages of Singtel Business Digital Line (BDL) compared to Singtel Business Fixed (analogue/copper) Line?
    With BDL, you can enjoy unlimited local calls at a flat monthly rate. In addition, you can continue to use your current BDL number even when you relocate.
  8. How do I sign up for a new Singtel Business Digital Line?
    You can approach any Singtel Account Managers or walk-in to our Business Centre at Comcentre. You may also call our Business Hotline at 1606 if you are an existing SingNet eVolve Fibre Broadband subscriber.
  9. What are the documents required for application?
    The documents required are photocopies of the bearer’s NRIC and Registry of Company certificate, and the Company stamp. If company stamp is not available, an authorization letter on the company’s letter head with the bearer’s NRIC and name should be presented.
  10. How long does it take for Singtel Business Digital Line (BDL) to be activated?

    If you are a new SingNet eVolve Fibre Broadband subscriber, your Business Digital Line will be installed together during your eVolve Broadband service installation.

    If you are an existing SingNet eVolve Fibre Broadband subscriber, installation is required.

  11. What is the minimum contractual period for Singtel Business Digital Line?
    The minimum contractual period is 3 months. Any termination within this contractual period will be subjected to Early Termination Charge.
  12. How do I sign up for more lines to my existing Singtel Business Digital Line service?
    You can approach any Singtel Account Managers or walk-in to our Business Centre at Comcentre. However, do take note that only a maximum number of two Business Digital Lines can be applied for each eVolve service.
  13. Is there a limit to the number of lines that I can sign up for Singtel Business Digital Line?
    A maximum number of two Business Digital Lines can be applied for each eVolve service.
  14. Can I convert Business Digital Line to Business Fixed Line and how do I do it?
    Yes you can. You may call 1606 to convert your DEL to BDL.
  15. If I am a Singtel Business Fixed Line (analogue/copper line) subscriber, can I retain my current number on the new Business Digital Line (BDL) service?
    Yes, you can retain the number when converting to BDL service.
  16. How do I terminate the Singtel Business Digital Line?
    Please call 1606 to terminate your Business Digital Line.
  17. Can I retain my existing Singtel Business Digital Line number from other operators?
    Yes you can.
  18. Can I terminate Singtel Business Digital Line without terminating the eVolve service?
    Yes you can.
  19. If I terminate the eVolve service, will the Singtel Business Digital Line be terminated as well?
    Yes your Business Digital Line will be terminated.
  20. How much does it cost to sign up for Singtel Business Digital Line (BDL)?
    The monthly subscription charge for BDL is $18.90 (including GST).
  21. How will I be billed for my new Singtel Business Digital Line subscription?
    You will be billed on a monthly basis for BDL in addition to the eVolve service.
  22. Are there any set-up charges involved? If so, what are the charges?
    For current customers with evolve, only line activation charges of $50 applies. For new evolve customers requesting for BDL, the setup charges will be applied as per SingNet eVolve
  23. Can Singtel Business Digital Line make outgoing and receive incoming overseas calls from overseas operators? If yes, any additional charges?
    Yes you can receive and make outgoing overseas calls. In order to do so, you will have to sign up for IDD service. Call charges will be as per currentIDD call charges .
  24. Will my current telephone set work with Singtel Business Digital Line service?
    In general most IDA certified telephone sets should work with Business Digital Line except old rotary telephones.
  25. Will making voice calls while surfing the Internet compromise the service quality of the two services?
    No, it will not compromise the service quality.
  26. Does Singtel Business Digital Line support faxing?

    Yes it does. Fax on Business Digital Line is supported if you are using the following models:

    • Fuji Xerox ApeosPort III C3300, DocuCentre IV C3370, WorkCentre 3550, DocuCentre 2056 ST
    • Canon MF4750 & MX457
    • Brother MFC-7360 ASA, MFC-7290 ASA, MFC-J625DW, MFC 3350, MFC 7860DW
    • Samsung MFP SCX – 3405FW
    • Lexmark CX410
    • Panasonic KX – MB1520CXB, KX – MB1536
    • Sharp UX-P410

    It is recommended that you configure the following settings:

    1. Keep the fax below 20 pages
    2. Reduce the speed (baud rate) of the machine to 9.6kbps
    3. Disable the “echo canceller” in the fax machine setting
    4. Tick “VOIP” if there is such an option


    If you need any assistance on the hardware configuration or compatibility information of the fax machine, please consult your fax machine vendor. Do note that fax to overseas numbers is subject to recipient’s network.

  27. My fax machine is not working with Singtel Business Digital Line, what can I do?
    Please check with the manufacturer whether the fax machine supports VOIP (Voice over IP) service and the configuration required to support it.
  28. Does Singtel Business Digital Line work with PABX and key-phone / key-telephone systems?
    Yes it does.
  29. Does Singtel Business Digital Line support answering machines or similar devices?
    No it doesn’t.
  30. Do I need to keep the ONT powered on at all times?
    Yes the ONT has to be powered on at all times in order for Singtel Business Digital Line to work.
  31. Does keeping the ONT powered at all times consume a lot of electricity?
    No it doesn’t, the ONT will only consume an average of 0.007kWh per hour.
  32. Does the ONT have standby power back-up?
    No, it doesn’t. Please ensure that the power is turned on.
  33. What should I do if my phone has no dial tone after installing?

    Please restart/reboot the ONT. Do note that when you restart/reboot the ONT, the fibre internet connection will also be affected and will take time to get connected again.

    If after the reboot, you are still unable to make calls, please call our technical support at 1606 (option 2 – Technical support).

  34. How do I know if the ONT is working?
    There is a green light indicator on the ONT – Phone 1 or Phone 2. If that light is red or is not flashing, try to restart/reboot the ONT. Do note that when you restart/reboot the ONT, the fibre internet connection will also be affected and will take time to get connected again. If after the reboot, you are still unable to make calls, please call our technical support at 1606 (option 2 – Technical support).
  35. What should I do if I lose the ONT or information such as System IDs?
    Please call our technical support, 1606 (option 2 – Technical support), for assistance.