P-Preferred Identity Header For Bla Accounts - Aastra 9143i Series Administrator's Manual

IP Phone Administrator Guide
Operational Features
#Alice phone number
sip line2 bla number:4085582868
sip line2 display name:Alice
sip line2 screen name:Alice
Alice's configuration is as follows:
#line 1
sip line1 auth name:4085582868
sip line1 password:
sip line1 mode: 3
sip line1 user name:4085582868
sip line1 display name: Alice
sip line1 screen name: Alice

P-Preferred Identity Header for BLA Accounts

The IP Phones support the BLA specification, draft-anil-sipping-bla-02, which
states that the P-Preferrred-Identity header (RFC3325) gets added to the INVITE
message to indicate the Caller-ID that is used for the call.
5-230
Note: The P-Preferred-Identity for BLA accounts is also sent for hold/
unhold messages.
41-001160-03, Rev 00, Releaes 2.4