---
title: Fax
description: Values of this syntax hold fax images produced by the Group 3 facsimile process, as described in Terminal Equipment and Protocols for Telematic Services, ITU-T Recommendation T.4.
component: pingds
version: 8.1
page_id: pingds:schemaref:s-Fax
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/s-Fax.html
---

# Fax

Values of this syntax hold fax images produced by the Group 3 facsimile process, as described in *Terminal Equipment and Protocols for Telematic Services*, ITU-T Recommendation T.4.

The ASN.1 type corresponds to this Fax syntax, assuming EXPLICIT TAGS:

```
Fax ::= CHOICE {
g3-facsimile  [3] G3FacsimileBodyPart
}
```

The `G3FacsimileBodyPart` ASN.1 type is defined by X.420.

|               |                                                           |
| ------------- | --------------------------------------------------------- |
| *OID*         | 1.3.6.1.4.1.1466.115.121.1.23                             |
| *Description* | Fax                                                       |
| *Origin*      | [RFC 4517](https://datatracker.ietf.org/doc/html/rfc4517) |