Dear experts,

Reading through "Architecture" document of PoC specification Phase 2,
it is written that:
"The PoC operator shall assign, to each user, an address-of-record (also known as public user identity) in the form of a SIP URI"
"The network operator shall assign to the user a private user identity for authentication purposes. The private user identity shall be hidden from the other users and cannot be used for addressing. The private user identity shall take the form of an NAI, and shall have the form username@realm as specified in clause 3 of RFC 2486 [22]. It is configured in the UE."
I have Nokia N81 device. Looking through PoC settings I've found that it is possible to enter only one
user name
So can you clarify, what is this user name ? PbUI or PrUI ?

Thanks !