---
title: facsimileTelephoneNumber
description: Fax phone number, such as +1 415 555 1212 or +1 415 555 1212$fineResolution.
component: pingds
version: 8.1
page_id: pingds:schemaref:at-facsimileTelephoneNumber
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-facsimileTelephoneNumber.html
---

# facsimileTelephoneNumber

Fax phone number, such as `+1 415 555 1212` or `+1 415 555 1212$fineResolution`.

|                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| --------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| *OID*                       | 2.5.4.23                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| *Names*                     | facsimileTelephoneNumber                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| *Syntax*                    | [FacsimileTelephoneNumber](s-FacsimileTelephoneNumber.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| *Equality matching rule*    | [caseIgnoreMatch](mr-caseIgnoreMatch.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| *Ordering matching rule*    | [caseIgnoreOrderingMatch](mr-caseIgnoreOrderingMatch.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| *Substring matching rule*   | [caseIgnoreSubstringsMatch](mr-caseIgnoreSubstringsMatch.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| *Single value*              | false: multiple values allowed                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| *User modification allowed* | true                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| *Usage*                     | userApplications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| *Origin*                    | [RFC 4519](https://datatracker.ietf.org/doc/html/rfc4519)                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| *Schema file*               | 00-core.ldif                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| *Used by*                   | [dNSDomain](oc-dNSDomain.html), [dmd](oc-dmd.html), [domain](oc-domain.html), [inetOrgPerson](oc-inetOrgPerson.html), [organization](oc-organization.html), [organizationalPerson](oc-organizationalPerson.html), [organizationalRole](oc-organizationalRole.html), [organizationalUnit](oc-organizationalUnit.html), [pilotOrganization](oc-pilotOrganization.html), [rFC822LocalPart](oc-rFC822LocalPart.html), [residentialPerson](oc-residentialPerson.html), [sunservicecomponent](oc-sunservicecomponent.html) |