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The E-UTRAN (Evolved UTRAN) consists of eNBs, providing the E-UTRA user plane (PDCP/RLC/MAC/PHY) and control plane (RRC) protocol

The QCI is a scalar denoting a set of transport characteristics (bearer with/without guaranteed bit rate, priority, packet delay budget, packet error loss rate) and used to infer nodes specific parameters that control packet forwarding treatment (e.g., scheduling weights, admission thresholds, queue management thresholds, link-layer protocol configuration, etc.). The QCI, together with Allocation-Retention Priority (ARP) and, if applicable, Guaranteed Bit Rate (GBR) and Maximum Bit Rate (MBR), determines the QoS associated to an EPS bearer. A mapping between EPS and pre-Release 8 QoS parameters has been defined to allow proper interworking with legacy networks.

QoS Class Identifier

SIB1 contains information relevant when evaluating if a UE is allowed to access a cell. Also, it supplies the UE with the scheduling of other system information. SIBs other than SIB1 are carried in SystemInformation (SI) messages and mapping of SIBs to SI messages is flexibly configurable by schedulingInfoList included in SIB1

1. The UE shall translate any user indicated emergency number to an emergency service URN. 2. 380 (Alternative Service) response includes a 3GPP IM CN subsystem XML body. 3. The last entry on the Path header field value received during registration is the value of the SIP URI of the P-CSCF.

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SGs is an interface between the MME and MSC server. It is used for the Mobility Management (MM) and paging procedures between EPS and CS domain, and is based on teh Gs (VLR-SGSN) interface procedures. The SGs reference point is also used for the delivery of both MO and MT SMS.