PSI – Public Service Identity
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

PSI – Public Service Identity

With respect to the 3GPP IMS (IP Multimedia Subsystem), PSI are used to identify services which are hosted by an AS (Application Server), as opposed to Public User Identities, which identify an IMS subscriber. PSI can also be used to identify groups of IMS subscribers.

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