CLI

No limitations beyond those listed in our Acceptable Use Policy.

Content

No limitations beyond those listed in our Acceptable Use Policy.

Other Features and Restrictions

When placing calls to any recipient using the Vonage API platform, you will need to ensure the phone number is formatted correctly.

For mobile recipients, you must add a 9 to the number after the country code, e.g., 5491123452345. Without this, calls to mobile numbers will fail with a SIP response of 404, 484, or 500, depending on the network. This is different from SMS, where you should not include the 9.

The 9 must not be inserted for calls to land line recipients, or the call will fail with a SIP response 404, 484, or 500, e.g., 542234563456.

Additional Information

For more information, see the Voice Numbers Features Overview.