Get Telephony Credentials

curl --request GET \
  --url https://api.ultravox.ai/api/accounts/me/telephony_config \
  --header 'X-API-Key: <api-key>'

{
  "twilio": {
    "accountSid": "<string>",
    "authTokenPrefix": {
      "prefix": "<string>"
    }
  },
  "telnyx": {
    "accountSid": "<string>",
    "apiKeyPrefix": {
      "prefix": "<string>"
    },
    "publicKeyPrefix": {
      "prefix": "<string>"
    },
    "applicationSid": "<string>"
  },
  "plivo": {
    "authId": "<string>",
    "authTokenPrefix": {
      "prefix": "<string>"
    }
  }
}