Frequently asked questions (faq)

faqBelow are the Frequently asked questions about telobal services, Please read before asking your question:

  1. WHAT IS A DID NUMBER?

    In practical terms, a DID (Direct Inward Dialing) Number or a Virtual Number (also called a DDI in Europe) is a local telephone number in a selected country or city. The calls made to these numbers are then forwarded by DIDWW to Voice over IP (VoIP) using SIP, H.323 or IAX protocols, or to a PSTN (Plain Old Telephone System) device such as a regular or mobile telephone anywhere in the world.
    Typically, a DID Number is used to provide local telephone numbers for customers on a worldwide basis, or to provide access from regular telephones to non-PSTN destinations such as VoIP.

  2. Can I Order Services Online?

    Yes. Once you have signed up and logged into your account, you will be able to order services and fully manage your account.

  3. Are there any End User Restrictions for DID Numbers?

    Information regarding end user restrictions is provided online during the DID purchase process. For more information, please visit : https://www.telobal.com/legal-requirements

  4. General SIP information:

    SIP addresses
    Telobal originates calls to customers from the following endpoints:
    46.19.209.14 - New York PoP
    46.19.210.14 - Frankfurt PoP
    46.19.212.14 - Los Angeles PoP
    46.19.213.14 - Miami PoP
    46.19.214.14 - Singapore PoP

    These IP addresses correspond to our routing cluster exit nodes. For UDP transport we send signaling from port 5060. For TCP we use port range from 5070 to 5200

    RTP addresses
    Our system sends RTP packets from the following subnets:
    46.19.208.0/21
    with RTP port-range: 1024-65535 RTCP
    We transmit and receive RTCP packets from port = rtp_port + 1 (as recommended in RFC3550). Additionally, we are able to receive RTCP packets on the same port as RTP, considering utilizing RTCP conflicts avoidance payloads (payload types 72-76).

    Supported codecs
    G.711 A-law/U-law
    G.729
    G.723.1
    L16
    G.726-16/G.726-40/G.726-32/G.726-24
    G.721
    GSM
    Speex

    DTMF transport methods
    DTMF signaling is supported as follows:
    Telephone-event RFC2833
    SIP INFO draft-kaplan-dispatch-info-dtmf-package-00
    application/dtmf-relay
    application/dtmf
    By default RFC 2833 enabled

  5. Can I Buy Additional Channels for my DIDs?

    Additional capacity may be purchased by contacting our sales department at This email address is being protected from spambots. You need JavaScript enabled to view it. for higher volumes.

  6. Can I Call Emergency Numbers using Telobal Services?

    The Telobal infrastructure supports or carries emergency calls. Since such service is not activated by default, please contact your account manager or the Telobal sales team via e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. for specific terms and conditions.

  7. Can I Change the Forwarding Destination for a DID?

    The forwarding destination for a DID may be changed by the customer at any time online using the “Telobal”. There are no additional charges involved. However, if a number previously forwarded to a non-PSTN device (such as VoIP, VoIM, etc) is now forwarded to PSTN (a regular telephone number or mobile), then per-minute charges become applicable.

  8. Can I Port my Numbers from Other Providers in to Telobal?

    Telobal supports the porting in of numbers from other providers. If you are interested in porting your numbers to Telobal, please visit https://www.Telobal.com/porting or contact the Telobal Porting Department via e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. or live chat for any additional information. We are constantly expanding our services so as to increase the number of regions supported, as well as to increase our coverage in each region. Please visit our website regularly to check for coverage updates.

  9. Can I Port my Numbers from Telobal out to Other Providers?

    Porting DID numbers away from Telobal (porting out) is supported. Please note that this facility is not available in certain countries/cities and fees may be applicable. Please contact the Telobal Porting Department via e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. or live chat for any additional information.

  10. Can I Use Telobal Numbers for Receiving Faxes?

    Yes, DID numbers can be used for T.38 Fax service.

  11. Can I Use My DID Number for SMS Services?

    Yes, DID numbers in certain countries support incoming SMS. You can check the available coverage in the Mobile Number page.

  12. Do I Have to Renew my DIDs Every Month?

    All services are renewed automatically until canceled by customer. However, if you would like to renew your DIDs manually for a certain selected period of time, this may be easily done online in the “DID Numbers” section of your account.

  13. How do I Get Support?

    A Telobal provides customer support via interactive live chat, e-mail or by phone.
    For support options, please see:
    https://www.telobal.com/contact-us

  14. How Long does it Take to Activate a DID?

    All new orders will be checked before activation to prevent mistakes in ordering users. After confirming the order of our colleagues, we will contact you at Telobal for final confirmation by email or contact details of the service, and if your service is accepted, your DIDs will be activated.
    It can take 10 minutes to 24 hours (depending on the volume of orders). Nonetheless, Telobal will do its best to provide faster service.
    It is worth noting that if you wish, you can apply to activate your "Automatic confirmation of orders" on your account.

  15. How Many Channels are Included when I Buy a DID?

    By default, any DIDs in Telobal includes two channels, which you can increase by contacting the Telobal sales department.
    This email address is being protected from spambots. You need JavaScript enabled to view it.

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