SIP Privacy
Contents |
Supported Standards
- draft-ietf-sip-privacy-04.txt for support of Remote-Party-ID.
- RFC3323 A Privacy Mechanism for the Session Initiation Protocol (SIP)1
- RFC3325 Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks2
- ITU Q.1912.5 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 |
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} | {calling_presentation} | {calling_screening} | 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" <address-spec>;rpi-pty-type;rpi-privacy;rpi-screen
RPID URI
The RPID URI display-name is filled from {private_display}.
The RPID URI address-spec is filled from {private_address}.
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" <address-spec> Privacy: priv-value
PAID URI
The PAID URI display-name is filled from {private_display}.
The PAID URI address-spec is filled from {private_address}.
'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 | |
