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92-35
Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 92 Trunk Configuration
Trunk Configuration Settings
Asserted Identity (continued)
Incoming SIP Trunk Calls—P Headers
The decision of which Asserted Identity (either P-Asserted-Identity
or P-Preferred-Identity) header gets sent depends on the configured
value of the Asserted-Type option. A non-default value for
Asserted-Type overrides values that come from Cisco Unified
Communications Manager Call Control. If the Asserted-Type
option is set to Default, the value of Screening Identification that the
SIP trunk receives from Cisco Unified Communications Manager
Call Control dictates the type of Asserted-Identity.
Incoming SIP Trunk Calls—SIP Privacy Header
The SIP Privacy header gets used only when you check the Asserted
Identity check box and when the SIP trunk sends either a PAI or PPI
header. (Otherwise the SIP Privacy header neither gets sent nor
processed in incoming SIP messages.)
The value of the SIP Privacy headers depends on the configured
value of the SIP Privacy option.
A non-default value for SIP Privacy overrides values that come from
Cisco Unified Communications Manager Call Control.
If the SIP Privacy option is set to Default, the Connected Line ID
Presentation and Connected Name Presentation that the SIP trunk
receives from Cisco Unified Communications Manager Call
Control determine the SIP Privacy header.
Note The Remote-party ID and Asserted Identity options
represent independent mechanisms for communication of
display-identity information.
Asserted-Type From the drop-down list, choose one of the following values to
specify the type of Asserted Identity header that SIP trunk messages
should include:
• Default—This option represents the default value; Screening
indication information that the SIP trunk receives from Cisco
Unified Communications Manager Call Control determines the
type of header that the SIP trunk sends.
• PAI—The Privacy-Asserted Identity (PAI) header gets sent in
outgoing SIP trunk messages; this value overrides the
Screening indication value that comes from Cisco Unified
Communications Manager.
• PPI—The Privacy Preferred Identity (PPI) header gets sent in
outgoing SIP trunk messages; this value overrides the
Screening indication value that comes from Cisco Unified
Communications Manager.
Note These headers get sent only if the Asserted Identity check
box is checked.
Table 92-2 Trunk Configuration Settings for SIP Trunks (continued)
Field Description