> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/protocols/sip-privacy.md).

# SIP Privacy

#### Supported Standards

* [draft-ietf-sip-privacy-04.txt](http://tools.ietf.org/id/draft-ietf-sip-privacy-04.txt) for support of Remote-Party-ID.
* [RFC3323](http://tools.ietf.org/html/rfc3325) *A Privacy Mechanism for the Session Initiation Protocol (SIP)*<sup>**1**</sup>
* [RFC3325](http://tools.ietf.org/html/rfc3325) *Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks*<sup>**2**</sup>
* [ITU Q.1912.5](http://www.itu.int/itudoc/itu-t/aap/sg11aap/history/q1912.5/index.html) *Interworking between SIP and BICC/ISUP*

\[**1**] Partial support. Support Section 4.1. *Constructing Private Messages*

\[**2**] Partial support. Doesn't support *P-Preferred-Identity*.

#### Acronyms

| **RPID**    | *Remode-Party-ID* header                                                                                                                                                                     |
| ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **PAID**    | *P-Asserted-Identity* header                                                                                                                                                                 |
| **CLI**     | *Calling Party Number* (ISUP or ISDN)                                                                                                                                                        |
| **GN**      | *Generic Number* for additional calling party number (ISUP ITU)                                                                                                                              |
| **APRI**    | *Address Presentation Restricted Indicator* (ISUP) or *Presentation indicator* (ISDN)                                                                                                        |
| **SI**      | *Screening Idicator* (ISUP or ISDN)                                                                                                                                                          |
| **{param}** | [Scripting call parameters](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping) |

## Script call parameter privacy mapping

### ISUP/ISDN

| **SS7 param**            | CLI digits                                                                                                                                                                   | CLI APRI                                                                                                                                                                                   | CLI SI                                                                                                                                                                                  | GN digits    | GN APRI      | GN SI        |
| ------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | ------------ | ------------ |
| **Routing script param** | [{calling}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping) | [{calling\_presentation}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping) | [{calling\_screening}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping) | *not mapped* | *not mapped* | *not mapped* |

The CLI APRI is mapped according to the following table.

| **{calling\_presentation} to ISUP/ISDN**             |                                |   |
| ---------------------------------------------------- | ------------------------------ | - |
| **{calling\_presentation}**                          | **CLI APRI**                   |   |
| "not\_available"                                     | *Address/Number not available* |   |
| "restricted", "addr\_restricted", "name\_restricted" | *Presentation Restricted*      |   |
| "unspecified", "allowed"                             | *Presentation Allowed*         |   |

| **ISUP/ISDN to {calling\_presentation}** |                             |   |
| ---------------------------------------- | --------------------------- | - |
| **CLI APRI**                             | **{calling\_presentation}** |   |
| *Address/Number not available*           | "not\_available"            |   |
| *Presentation Restricted*                | "restricted"                |   |
| *Presentation Allowed*                   | "allowed"                   |   |
| Other value                              | "unspecified"               |   |

The CLI SI is mapped according to the following table.

| **{calling\_screening} to/from ISUP/ISDN** |                                        |   |
| ------------------------------------------ | -------------------------------------- | - |
| **{calling\_screening}**                   | **CLI SI**                             |   |
| "pass"                                     | *User provided, verified and passed*   |   |
| "fail"                                     | *User provided, verified and failed*   |   |
| "no"                                       | *User provided, not screened/verified* |   |
| "network\_provided"                        | *Network Provided*                     |   |

***

### SIP 'Remode-Party-ID' header

The Remote-Party-ID header field is defined as: Remote-Party-ID: "display-name" ;rpi-pty-type;rpi-privacy;rpi-screen

#### RPID URI

The RPID URI display-name is filled from [{private\_display}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping).

The RPID URI address-spec is filled from [{private\_address}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping).

#### RPID rpi-screen param

The RPID rpi-screen param is filled according to the following table.

| **{calling\_screening} to SIP**            |                           |   |
| ------------------------------------------ | ------------------------- | - |
| **{calling\_screening}**                   | **RPID rpi-screen param** |   |
| "unspecified", "pass", "network\_provided" | screen=yes                |   |
| "fail", "no"                               | screen=no                 |   |

| **SIP to {calling\_screening}** |                          |   |
| ------------------------------- | ------------------------ | - |
| **RPID rpi-screen param**       | **{calling\_screening}** |   |
| screen=yes                      | "pass"                   |   |
| screen=no                       | "no"                     |   |
| no *screen* param               | "unspecified"            |   |

#### RPID rpi-privacy param

The RPID rpi-privacy param is filled according to the following table.

| **{calling\_presentation} to SIP**         |                            |   |
| ------------------------------------------ | -------------------------- | - |
| **{calling\_presentation}**                | **RPID rpi-privacy param** |   |
| "unspecified", "not\_available", "allowed" | privacy=off                |   |
| "restricted"                               | privacy=full               |   |
| "addr\_restricted"                         | privacy=uri                |   |
| "name\_restricted""                        | privacy=name               |   |

| **SIP to {calling\_presentation}** |                             |   |
| ---------------------------------- | --------------------------- | - |
| **RPID rpi-privacy param**         | **{calling\_presentation}** |   |
| privacy=off                        | "allowed"                   |   |
| privacy=full                       | "restricted"                |   |
| privacy=uri                        | "addr\_restricted"          |   |
| privacy=name                       | "name\_restricted""         |   |
| no *privacy* param                 | "unspecified""              |   |

#### RPID rpi-pty-type param

The RPID rpi-pty-type param is harcoded to: party=calling

***

### SIP 'P-Asserted-Identity' and 'Privacy' headers

The P-Asserted-Identity and Privacy header field are defined as: P-Asserted-Identity: "display-name" Privacy: priv-value

#### PAID URI

The PAID URI display-name is filled from [{private\_display}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping).

The PAID URI address-spec is filled from [{private\_address}](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/routing-script-tutorial-development-guide/README.md#script-parameters-protocol-mapping).

#### 'Privacy' header

The 'Privacy' header is filled according to the following table.

| **{calling\_presentation} to SIP**                   |                              |   |
| ---------------------------------------------------- | ---------------------------- | - |
| **{calling\_presentation}**                          | **Privacy priv-value param** |   |
| "unspecified", "not\_available", "allowed"           | none                         |   |
| "restricted", "addr\_restricted", "name\_restricted" | id                           |   |


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