9.6 GTTP Messages

3GPP44.018GSM/EDGE Radio Resource Control (RRC) protocolMobile radio interface Layer 3 specificationRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

Table 9.6.1 summarises the GTTP messages.

Table 9.6.1: GTTP messages

GPRS Transparent Transport messages	Reference
GPRS Information	9.6.1

9.6.1 GPRS Information

This message is sent in acknowledged mode on the main DCCH in order to carry GPRS information in a transparent manner between the mobile station and the network. See table 9.6.2.

Message type: GPRS Information

Significance: global

Direction: both

Table 9.6.2: GPRS Information message content

IEI	Information element	Type / Reference	Presence	Format	length
	GTTP Protocol Discriminator	Protocol Discriminator 10.2	M	V	1/2
	Skip Indicator	Skip Indicator 10.3.1	M	V	1/2
	GPRS Information Message Type	Message Type 10.4	M	V	1
	TLLI	TLLI 10.5.2.41a	M	V	4
	LLC PDU	LLC PDU Container 10.5.8.1	M	LV	2-n

9.6.1.1 TLLI

This information element carries the Temporary Logical Link Identifier.

9.6.1.2 LLC PDU Container

This information element carries an LLC PDU with upper layer information.