name: GSN
full_form: GPRS Support Node (SGSN or GGSN)
context: different 'Call-id' values for different legs of signalling. Therefore some other number would be needed in such a case. NOTE 3: The LIID may be used to associate SIP messages with respective GSN IRI records. In case the target is only permitted to have a single SIP session with a single CC bearer active at any time, the LIID is sufficient to correlate IMS IRI records with GSN IRI records. In all other case s, e.g. the target is permitted to have multiple SIP sessions active concurrently, a combination of the LIID and an implementation dependent number may be used to correlate the IMS IRI records with the GSN IRI records. In case the LIID of a given target has different values in the GSN and in the CSCF, it is up to the LEMF to recover the association between the two LIIDs. SIP correlation number is used to correlate events of one specific SIP session. Correlation number is not applicable to interception at the HSS.
description: A GPRS Support Node (GSN) is a network function that supports General Packet Radio Service (GPRS) in a mobile network, enabling packet data transmission between mobile devices and external networks. It acts as an interface between the mobile network and the external packet data network.
explanation: The context explicitly states that GSN is a 'network function' and describes its role in supporting GPRS within a mobile network.
section_title: 7.1.3	Correlation number
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biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,B-Technology,I-Technology,I-Technology,I-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O