This article presents how to verify if the end user is using Okta Telephony (Twilio or Telesign are Okta's Telephony Providers) or the Telephony Inline Hook (Bring Your Own Telephony (BYOT)) due to Okta's BYOT policy.

• Multi-Factor Authentication (MFA)
• SMS/Voice/Phone

1. Check Okta System Logs > expand the logs under System.
2. Look for the information below: 

   Send second factor auth call
   SUCCESS

   OR

   Send second factor auth SMS
   SUCCESS

If Okta Telephony Vendor was used for SMS / Call	If the Telephony Inline Hook was used for SMS / Call
In this example, the Okta Telephony Provider "Telesign" was used for authentication. Okta System Log Search: debugContext.debugData.smsProvider eq "TELESIGN" debugContext.debugData.smsProvider eq “TWILIO”	In this example, the Telephony Inline Hook "Twilio" was used for authentication. Okta System Log Search: debugContext.debugData.smsProvider eq "TELEPHONY_PROVIDER_HOOK"

Related References

• Okta’s recommended telephony providers
• Bring Your Own Telephony Required for SMS and Voice
• How to View Logs for SMS and Voice Calls
• How to Identify Telephony Usage