SIP Privacy

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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


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'

RPID URI

The RPID URI display-name is not filled. The RPID URI address-spec is filled with {calling}.

RPID "screen" param

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

{calling_screening} to SIP
{calling_screening} RPID screen param
"unspecified", "pass", "network_provided" screen="yes"
"fail", "no" screen="no"
SIP to {calling_screening}
RPID screen param {calling_screening}
screen="yes" "pass"
screen="no" "no"
not screen param "unspecified"

RPID "privacy" param

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

{calling_presentation} to SIP
{calling_presentation} RPID privacy param
"unspecified", "not_available", "allowed" privacy="off"
"restricted" privacy="full"
"addr_restricted" privacy="uri"
"name_restricted"" privacy="name"
SIP to {calling_presentation}
RPID privacy param {calling_presentation}
privacy="off" "allowed"
privacy="full" "restricted"
privacy="uri" "addr_restricted"
privacy="name" "name_restricted""
no privacy param "unspecified""

SIP 'P-Asserted-Identity'

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