openapi: 3.0.3
info:
title: Call Forwarding Signal Age Verification Fill-in API
description: '# Overview
The Call Forwarding Signal API provides the API Consumer with
information about the status of the Call Forwarding Service on a specific
phone number. The main scope of the Call Forwarding Signal API is "anti
Fraud" to avoid fraudsters to use the Call Forwarding Service to carry
on a scam. Other use cases are anyway supported by the Call Forwarding
Signal API that also
provides additional endpoints to detect the general Call Forwarding
Service settings.
# Introduction
The Call Forwarding Service is provided by the Network to a phone
number. This service redirects the incoming call to that phone number
to an alternative destination such as another phone number or a voice mail
system. There are two main types of call forwarding settings:
unconditional and conditional.
The Call Forwarding Signal API can be invoked to detect if the unconditional
call forwarding service is active. The Call Forwarding Signal API can also
be invoked to
get the general status of the Call Forwarding Service (inactive,
conditional, unconditional). If conditional call forwarding is active,
the different type of settings are returned (''conditional_busy'',
''conditional_not_reachable'', ''conditional_no_answer'').
**Example use cases:**
[**Bank Frauds**](https://github.com/camaraproject/CallForwardingSignal/discussions/3#discussioncomment-8694420)
[**Alert Interception**](https://github.com/camaraproject/CallForwardingSignal/discussions/3#discussioncomment-8701847)
[**Call Forwarding Verification**](https://github.com/camaraproject/CallForwarding\Signal/discussions/3#discussioncomment-8915595)
# Quick Start
The Call Forwarding Signal API is a REST API based on the
CreateCallForwardingSignal resource.
This resource can be used, by the API Consumer, to specify the phone number
on which the Call Forwarding Service status must be verified, in case of
two-legged authentication. If three-legged authentication is used the phone
number is instead detected, by the API Producer, from the access token.
Before starting to use the Call Forwarding API, the developer needs to know
about the below specified details:
**phoneNumber**
This is the end user phone number. The Call Forwarding Signal API verifies
if a call forwarding
service is active on this phone number. Note: this parameter must be
must be provided/valued only in case of two-legged authentication.
In case of three-legged authentication the phone number is retrieved by
the access token.
**CreateCallForwardingSignal**
This is the resource the API Consumer uses to define the phone number to
be verified about the status of the Network Call Forwarding service.
**UnconditionalCallForwardingSignal**
This is the resource the API Consumer gets back, containing the information
about the Unconditional Call Forwarding Service status for the given phone
number (PhoneNumber).
**CallForwardingSignal**
This is the resource the API Consumer gets back, containing the information
about the general status of the Network Call Forwarding service for the
specified phone number.
The Call Forwarding Signal API provides two endpoints fulfilling the
following intents:
- **unconditional-call-forwardings**: Is the unconditional call fwd service
active on a specific phone number?
- **call-forwardings**: Which is the status of the call forwarding for a
specific phone number?
# API Documentation
## Details
The Call Forwarding Signal API is invoked by an API Consumer after the
Consent Management flow.
The API Consumer can request the API Producer for the status of the
Unconditional Call Forwarding service using the
unconditional-call-forwardings POST method. A boolean, with the information
about the activation status of the call forwarding service, will be
provided back via the UnconditionalCallForwardingSignal resource.
The API Consumer can also request the API Producer for the generic status of
the Call Forwarding service using the call-forwardings POST method. An array
of strings with the information of the type of active call forwarding
services will be provided back via the CallForwardingSignal resource.
# Authorization and authentication
The "Camara Security and Interoperability Profile" provides details of how
an API consumer requests an access token. Please refer to Identity and
Consent Management
(https://github.com/camaraproject/IdentityAndConsentManagement/)
for the released version of the profile.
The specific authorization flows to be used will be agreed upon during the
onboarding process, happening between the API consumer and the API
provider, taking into account the declared purpose for accessing the API,
whilst also being subject to the prevailing legal framework dictated by
local legislation.
In cases where personal data is processed by the API and users can
exercise their rights through mechanisms such as opt-in and/or opt-out,
the use of three-legged access tokens is mandatory. This ensures that
the API remains in compliance with privacy regulations, upholding the
principles of transparency and user-centric privacy-by-design.
# Identifying the phone number from the access token
This API requires the API consumer to identify a phone number as the
subject of the API as follows:
- When the API is invoked using a two-legged access token, the subject
will be identified from the optional `phoneNumber` object field, which
therefore MUST be provided.
- When a three-legged access token is used however, this optional
identifier MUST NOT be provided, as the subject will be uniquely
identified from the access token.
This approach simplifies API usage for API consumers using a
three-legged access token to invoke the API by relying on the
information that is associated with the access token and was
identified during the authentication process.
## Error handling:
- If the subject cannot be identified from the access token and the
optional `phoneNumber` object field is not included in the request, then
the server will return an error with the
`422 MISSING_IDENTIFIER` error code.
- If the subject can be identified from the access token and the
optional `phoneNumber` object field is also included in the request, then
the server will return an error with the `422 UNNECESSARY_IDENTIFIER`
error code. This will be the case even if the same device is
identified by these two methods, as the server is unable to make
this comparison.
# Additional CAMARA error responses
The list of error codes in this API specification is not exhaustive.
Therefore the API specification may not document some non-mandatory error
statuses as indicated in `CAMARA API Design Guide`.
Please refer to the `CAMARA_common.yaml` of the Commonalities Release
associated to this API version for a complete list of error responses.
The applicable Commonalities Release can be identified in the
`API Readiness Checklist` document associated to this API version.
As a specific rule, error `501 - NOT_IMPLEMENTED` can be only a possible
error response if it is explicitly documented in the API.
# FAQ''s
(FAQs will be added in a later version of the documentation)
'
version: wip
license:
name: Apache 2.0
url: https://www.apache.org/licenses/LICENSE-2.0.html
x-camara-commonalities: 0.6
servers:
- url: '{apiRoot}/call-forwarding-signal/vwip'
variables:
apiRoot:
default: http://localhost:9091
description: API root, defined by the service provider, e.g. `api.example.com` or `api.example.com/somepath`
tags:
- name: Fill-in
description: Operations to provide information related to a customer identity stored the account data bound to the customer's phone number.
paths:
/fill-in:
post:
tags:
- Fill-in
summary: Providing information related to a customer identity stored the account data bound to the customer's phone number.
operationId: KYC_Fill-in
security:
- openId:
- kyc-fill-in:set-all
- openId:
- kyc-fill-in:phoneNumber
- openId:
- kyc-fill-in:idDocument
- openId:
- kyc-fill-in:name
- openId:
- kyc-fill-in:givenName
- openId:
- kyc-fill-in:familyName
- openId:
- kyc-fill-in:nameKanaHankaku
- openId:
- kyc-fill-in:nameKanaZenkaku
- openId:
- kyc-fill-in:middleNames
- openId:
- kyc-fill-in:familyNameAtBirth
- openId:
- kyc-fill-in:address
- openId:
- kyc-fill-in:streetName
- openId:
- kyc-fill-in:streetNumber
- openId:
- kyc-fill-in:postalCode
- openId:
- kyc-fill-in:region
- openId:
- kyc-fill-in:locality
- openId:
- kyc-fill-in:country
- openId:
- kyc-fill-in:houseNumberExtension
- openId:
- kyc-fill-in:birthdate
- openId:
- kyc-fill-in:email
- openId:
- kyc-fill-in:gender
parameters:
- $ref: '#/components/parameters/x-correlator'
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/KYC_FillinRequest'
examples:
KYC_FillInBodyExample:
value:
phoneNumber: '+34629255833'
responses:
'200':
description: OK
headers:
x-correlator:
$ref: '#/components/headers/X-Correlator'
content:
application/json:
schema:
$ref: '#/components/schemas/KYC_FillinResponse'
examples:
KYC_Fillin200Example:
value:
phoneNumber: '+34629255833'
idDocument: 66666666q
name: Federica Sanchez Arjona
givenName: Federica
familyName: Sanchez Arjona
nameKanaHankaku: federica
nameKanaZenkaku: Ｆｅｄｅｒｉｃａ
middleNames: Sanchez
familyNameAtBirth: YYYY
address: Tokyo-to Chiyoda-ku Iidabashi 3-10-10
streetName: Nicolas Salmeron
streetNumber: 4
postalCode: 1028460
region: Tokyo
locality: ZZZZ
country: JP
houseNumberExtension: 36
birthdate: '1978-08-22'
email: abc@example.com
gender: male
'400':
$ref: '#/components/responses/Generic400'
'401':
$ref: '#/components/responses/Generic401'
'403':
$ref: '#/components/responses/Generic403'
'404':
$ref: '#/components/responses/Generic404'
'422':
$ref: '#/components/responses/Generic422'
components:
responses:
Generic422:
description: Unprocessable Content
headers:
x-correlator:
$ref: '#/components/headers/X-Correlator'
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ErrorInfo'
- type: object
properties:
status:
enum:
- 422
code:
enum:
- SERVICE_NOT_APPLICABLE
- MISSING_IDENTIFIER
- UNNECESSARY_IDENTIFIER
examples:
GENERIC_422_SERVICE_NOT_APPLICABLE:
description: Service is not applicable for the provided phone number
value:
status: 422
code: SERVICE_NOT_APPLICABLE
message: The service is not applicable for the provided phone number
GENERIC_422_MISSING_IDENTIFIER:
description: No phone number has been provided either explicitly or associated with the access token
value:
status: 422
code: MISSING_IDENTIFIER
message: No phone number has been provided
GENERIC_422_UNNECESSARY_IDENTIFIER:
description: An explicit phone number has been provided when one is already associated with the access token
value:
status: 422
code: UNNECESSARY_IDENTIFIER
message: An explicit phone number has been provided when one is already associated with the access token
Generic401:
description: Unauthorized
headers:
x-correlator:
$ref: '#/components/headers/X-Correlator'
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ErrorInfo'
- type: object
properties:
status:
enum:
- 401
code:
enum:
- UNAUTHENTICATED
- AUTHENTICATION_REQUIRED
examples:
GENERIC_401_UNAUTHENTICATED:
description: Request cannot be authenticated
value:
status: 401
code: UNAUTHENTICATED
message: Request not authenticated due to missing, invalid, or expired credentials.
GENERIC_401_AUTHENTICATION_REQUIRED:
description: New authentication is needed, authentication is no longer valid
value:
status: 401
code: AUTHENTICATION_REQUIRED
message: New authentication is required.
Generic403:
description: Forbidden
headers:
x-correlator:
$ref: '#/components/headers/X-Correlator'
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ErrorInfo'
- type: object
properties:
status:
enum:
- 403
code:
enum:
- PERMISSION_DENIED
examples:
GENERIC_403_PERMISSION_DENIED:
description: Permission denied. OAuth2 token access does not have the required scope or when the user fails operational security
value:
status: 403
code: PERMISSION_DENIED
message: Client does not have sufficient permissions to perform this action.
Generic400:
description: Bad Request
headers:
x-correlator:
$ref: '#/components/headers/X-Correlator'
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ErrorInfo'
- type: object
properties:
status:
enum:
- 400
code:
enum:
- INVALID_ARGUMENT
examples:
GENERIC_400_INVALID_ARGUMENT:
description: Invalid Argument. Generic Syntax Exception
value:
status: 400
code: INVALID_ARGUMENT
message: Client specified an invalid argument, request body or query param.
Generic404:
description: Not found
headers:
x-correlator:
$ref: '#/components/headers/X-Correlator'
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ErrorInfo'
- type: object
properties:
status:
enum:
- 404
code:
enum:
- IDENTIFIER_NOT_FOUND
examples:
GENERIC_404_IDENTIFIER_NOT_FOUND:
description: The phone number is not associated with a CSP customer account
value:
status: 404
code: IDENTIFIER_NOT_FOUND
message: The phone number provided is not associated with a customer account
parameters:
x-correlator:
name: x-correlator
in: header
description: Correlation id for the different services
schema:
type: string
pattern: ^[a-zA-Z0-9-]{1,55}$
example: b4333c46-49c0-4f62-80d7-f0ef930f1c46
schemas:
ErrorInfo:
type: object
required:
- status
- code
- message
properties:
status:
type: integer
description: HTTP response status code
code:
type: string
description: Code given to this error
message:
type: string
description: Detailed error description
KYC_FillinResponse:
type: object
properties:
phoneNumber:
type: string
description: A public identifier addressing a telephone subscription. In mobile networks it corresponds to the MSISDN (Mobile Station International Subscriber Directory Number). In order to be globally unique it has to be formatted in international format, according to E.164 standard, prefixed with '+'.
pattern: ^\+[1-9][0-9]{4,14}$
example: '+123456789'
idDocument:
type: string
description: Id number associated to the id_document of the customer stored on the Operator's system.
name:
type: string
description: Complete name of the customer stored on the Operator's system. It is usually composed of first/given name and last/family/sur- name in a country. Depending on the country, the order of first/give name and last/family/sur- name varies, and middle name could be included. It can use givenName, middleNames, familyName and/or familyNameAtBirth. For example, in ESP, name+familyName; in NLD, it can be name+middleNames+familyName or name+middleNames+familyNameAtBirth, etc.
givenName:
type: string
description: First/given name or compound first/given name of the customer on the Operator's system.
familyName:
type: string
description: Last name, family name, or surname of the customer stored on the Operator's system.
nameKanaHankaku:
type: string
description: Complete name of the customer in Hankaku-Kana format (reading of name) for Japan, stored on the Operator's system.
nameKanaZenkaku:
type: string
description: Complete name of the customer in Zenkaku-Kana format (reading of name) for Japan, stored on the Operator's system.
middleNames:
type: string
description: Middle name/s of the customer stored on the Operator's system.
familyNameAtBirth:
type: string
description: Last/family/sur- name at birth of the customer stored on the Operator's system.
address:
type: string
description: Complete address of the customer stored on the Operator's system. For some countries, it is built following the usual concatenation of parameters in a country, but for other countries, this is not the case. For some countries, it can use streetName, streetNumber and/or houseNumberExtension. For example, in ESP, streetName+streetNumber; in NLD, it can be streetName+streetNumber or streetName+streetNumber+houseNumberExtension.
streetName:
type: string
description: Name of the street of the customer's address on the Operator's system. It should not include the type of the street.
streetNumber:
type: string
description: The street number of the customer's address on the Operator's system. Number identifying a specific property on the 'streetName'.
postalCode:
type: string
description: The postal code or Zip code of the customer's address, stored on the Operator's system.
region:
type: string
description: Region/prefecture of the customer's address, stored on the Operator's system.
locality:
type: string
description: Locality of the customer's address, stored on the Operator's system.
country:
type: string
description: Country of the customer's address stored on the Operator's system. Format ISO 3166-1 alpha-2.
houseNumberExtension:
type: string
description: House number extension of the customer stored on the Operator's system. Specific identifier of the house needed depending on the property type. For example, number of apartment in an apartment building.
birthdate:
type: string
format: date
description: Birthdate of the customer, in ISO 8601 calendar date format (YYYY-MM-DD), stored on the Operator's system.
email:
type: string
format: email
description: Email address of the customer in the RFC specified format (local-part@domain), stored on the Operator's system.
gender:
type: string
description: Gender of the customer stored on the Operator's system (male/female/other).
enum:
- MALE
- FEMALE
- OTHER
KYC_FillinRequest:
type: object
properties:
phoneNumber:
type: string
description: A public identifier addressing a telephone subscription. In mobile networks it corresponds to the MSISDN (Mobile Station International Subscriber Directory Number). In order to be globally unique it has to be formatted in international format, according to E.164 standard, prefixed with '+'.
pattern: ^\+[1-9][0-9]{4,14}$
example: '+123456789'
headers:
X-Correlator:
description: Correlation id for the different services
required: false
schema:
type: string
pattern: ^[a-zA-Z0-9-]{1,55}$
example: b4333c46-49c0-4f62-80d7-f0ef930f1c46
securitySchemes:
openId:
description: to support Consent Management
type: openIdConnect
openIdConnectUrl: https://example.com/.well-known/openid-configuration
externalDocs:
description: Product documentation at CAMARA
url: https://github.com/camaraproject/CallForwardingSignal