1
© 2011 Award Solutions, Inc. LTE-EPC AND IMS REFERENCE LTE_902 LTE-EPC and IMS Reference v1.6 CPE I-CSCF PCRF S-GW P-CSCF P-GW/PCEF MME GTPv2-C UDP GTP-U Payload UDP S5 GTPv2-C UDP S11 Not Specified BICC (SS7) Bearer Independent Call Control, ITU-T Q.1901 Diameter RFC 3588, RFC 3589, RFC 4006, RFC 4740 DNS Domain Name System, RFC 1035 GTPv2-C GPRS Tunneling Protocol ver.2 Control Plane, 29.274 GTPv1-U GPRS Tunneling Protocol User Plane, 29.281 HTTP Hypertext Transfer Protocol, RFC 2616 IP Internet Protocol, RFC 791 ISUP (SS7) ISDN User Part, ITU-T Q.763 L1 (SS7) Layer 1 (unspecified) M3UA MTP3 User Adaptation Layer, RFC 4666 MEGACO Media Gateway Control Protocol, ITU-T H.248 MTP2 (SS7) Message Transfer Part 2, ITU-T Q.703 MTP3 (SS7) Message Transfer Part 3, ITU-T Q.703 RTP Real-Time Transport Protocol, RFC 3550 S1AP S1 Application Protocol, 36.413 SCTP Stream Control Transmission Protocol, RFC 4960 SIP Session Initiation Protocol, RFC 3261 TCP Transmission Control Protocol, RFC 793 TDM (PSTN) Time Division Multiplexing UDP User Datagram Protocol, RFC 768 Not Specified (proprietary) Protocols Interface Nodes Technical Specifications Cx CSCF HSS 29.228. 29.229 Gm UE P-CSCF 23.002, RFC 3261 Gx PCEF PCRF 29.212 Gy PCEF OCS 32.299 Gz PCEF OFCS 32.299 ISC S-CSCF AS 23.228 Mb RTP-based Bearer 29.162, RFC 4867 Mg MGCF CSCF 23.002, RFC 3261 Mi CSCF BGCF 23.002, RFC 3261 Mj BGCF MGCF 23.002, RFC 3261 Mk BGCF BGCF 23.002, RFC 3261 Mn MGCF MGW 29.332, ITU-T H.248 Mp MRFC MRFP 29.333, ITU-T H.248 Mr S-CSCF MRFC 23.002, RFC 3261 Mw I-CSCF, P-CSCF, S-CSCF 23.002, RFC 3261 Rx AF PCRF 29.214 S1-MME E-UTRAN (eNB) MME 36.412, 36.413 S1-U E-UTRAN (eNB) S-GW 36.414, 29.281 S5 S-GW P-GW 29.274 (control plane) 29.281 (user plane) S6a MME HSS 29.272 S11 MME S-GW 29.274 SGi P-GW PDN 29.061 Sh HSS AS 29.328, 29.329 Sp SPR PCRF 23.203 Ut UE AS RFC 2616 3GPP Interfaces and Technical Specifications AS MRFC MRFP MGW SGW Interfaces LEGEND LTE Traffic and Signaling User Traffic (indeterminate) LTE Signaling IMS Media Plane IMS Session Control Plane IMS Media Control Service Control IMS Application Plane PSTN Signaling Charging Control Virtual Interfaces (different colors) MGCF S-CSCF UE PSTN Payload RTP UDP IP TCP UDP Payload Gx Sp Diameter GTPv2-C UDP TDM MTP3 MTP2 L1 ISUP M3UA SCTP IP TCP SIP RTP MEGACO HTTP GTP-U S1AP Mb Mb Not Specified SPR HSS HSS Subscriber’s service management Subscriber’s IMS-based media stream Subscriber’s SIP- based registrations and session control BICC Payload RTP UDP 23.002; 23.401; 23.402/ 23.203 23.203 23.002 23.002 23.002 23.228 23.228 23.228 23.228 23.228 23.228 23.228 23.228 23.228 23.002 PLMN BGCF Mj BGCF (another network) 23.228 UDP TCP SIP SCTP AF Subscriber’s IP Network Access IP Network ENUM DNS RFC 6116; RFC 6117 23.228 AF Application Function AS Application Server BGCF Breakout Gateway Control Function CPE Customer Premise Equipment DNS Domain Name System ENUM E.164 Number Mapping E-UTRAN Evolved UTRAN HSS Home Subscriber Server I-CSCF Interrogating Call Session Control Function IMS IP Multimedia Subsystem ISC IMS Service Control MGCF Media Gateway Control Function MGW Media Gateway MME Mobility Management Entity MRFC Media Resource Function Controller MRFP Media Resource Function Processor OCS Online Charging System OFCS Offline Charging System PCEF Policy and Charging Enforcement Function PCRF Policy and Charging Rules Function P-CSCF Proxy Call Session Control Function PDN Packet Data Network P-GW PDN Gateway PLMN Public Land Mobile Network PSTN Public Switched Telephone Network S-CSCF Serving Call Session Control Function SGW Signaling Gateway S-GW Serving Gateway SPR Subscription Profile Repository Acronyms and Nodes S5 S5 OCS OFCS TCP Diameter SCTP DNS 23.203; 32.251 23.203; 32.251; 32.296 E-UTRAN
