--- title: Twilio Verify API Notification Publisher settings reference description: Field descriptions for the Twilio Verify API Notification Publisher configuration page. component: otp page_id: otp:setup:pf_otp_ik_twilio_verify_api_notification_publisher_settings_reference canonical_url: https://docs.pingidentity.com/integrations/otp/setup/pf_otp_ik_twilio_verify_api_notification_publisher_settings_reference.html revdate: April 14, 2025 --- # Twilio Verify API Notification Publisher settings reference Field descriptions for the **Twilio Verify API Notification Publisher** configuration page. > **Collapse: Standard fields** > > | Field | Description | > | ---------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | > | **Account SID** | The **Account SID** that you noted in [Getting your Twilio API credentials](pf_otp_ik_getting_your_twilio_api_credentials.html). | > | **Auth Token** | The **Auth Token** that you noted in [Getting your Twilio API credentials](pf_otp_ik_getting_your_twilio_api_credentials.html). | > | **Service ID** | The **Service ID** that you noted in [Getting your Twilio API credentials](pf_otp_ik_getting_your_twilio_api_credentials.html). | > | **Delivery Method** | The method used to send the one-time passcode (OTP). | > | **Block VoIP Numbers** | When selected, the Twilio Lookup API is used to ensure SMS messages are not sent to VoIP phone numbers.This is a paid service. Learn more in [Lookup](https://www.twilio.com/lookup) in the Twilio documentation.This checkbox is cleared by default. | > | **Blocked Numbers** | OTPs are not sent to phone numbers that match these values.Separate multiple values with a comma.The default values are the following toll-free numbers: `+1800,+1888,+1877,+1866,+1855,+1844,+1833`. | > | **Test Mail** | The email address used to test the configuration on the **Actions** tab. | > | **Test Phone** | The phone number used to test the configuration on the **Actions** tab. | > **Collapse: Advanced fields** > > | Field | Description | > | ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | > | **API Request Timeout** | The amount of time in milliseconds that PingFederate waits for the Twilio API to respond to requests. A value of `0` disables the timeout. A negative value uses the PingFederate system defaults.The default value is `5000`. | > | **Connection Timeout** | The amount of time in milliseconds that PingFederate allows to establish a connection with the Twilio API. A value of `0` disables the timeout. A negative value uses the PingFederate system defaults.The default value is `5000`. | > | **Proxy Settings** | The proxy settings to use for outbound HTTP requests originating from the notification publisher. This setting allows you to override the PingFederate system-default proxy settings.The default selection is **System Defaults**. | > | **Customer Proxy Host** | The proxy server hostname to use when **Proxy Settings** is set to **Custom**.This field is blank by default. | > | **Custom Proxy Port** | The proxy server port to use when **Proxy Settings** is set to **Custom**.This field is blank by default. |