Multivendor project Capability Management Ericsson 3G site solutions

Multivendor project Capability Management Ericsson 3G site solutions April 2010

Mobile Network Architecture

Contents Chapter 1 Ericsson RNC Chapter 2 Ericsson NodeBs

Configurations with two cabinets RNC 3810 The RNC 3810 consists of three major parts: Cabinet: Ericsson BYB501 cabinet with up to three subracks and an ICF Interface Connection Field (ICF): External point of connection to the RNC for transmission cables and O&M equipment Subrack (Main and Extension)

Configurations with two cabinets Modular hardware architecture 1-6 sub-racks in 1-2 cabinets Expansion without disturbing ongoing traffic Six basic board types Hardware architecture is based on subracks connected in a star topology Capacity is increased by connecting extension subracks to the main subrack Configuration can serve from 22.000 up to 375,000 subscribers Supported transmission interfaces/properties: E1/T1/J1 ATM E3/T3 ATM STM-1/OC-3/STS-3 ATM Channelized STM-1/STM-4/OC-3/STS-3 ATM Ethernet 1000BaseT SFP (1 Gbps, optical Ethernet) RNC 3810

Main Subrack An RNC 3810 always includes a Main Subrack. The Main Subrack interconnects all other subracks in the RNC through Inter-Subrack Links (ISL). The Main Subrack includes all functions of an Extension Subrack as well as common functions to the RNC. Functions of the Main Subrack: Non-blocking ATM switch ISLs towards the Extension Subracks Processors for user plane processing and control plane processing Processors for centralized node processing Timing signals for the node Local Ethernet termination for element management Transmission interfaces for termination of all interfaces: Mur interface towards OSS-RC lu interface towards the Core Network Iur interface towards other RNCs lub interface towards the RBSs RNC 3810

Extension Subrack The Extension Subrack interfaces towards the RBSs. The number of Extension Subracks in a node is from 0 to 5. The functions of an Extension Subrack: Processors for user plane processing and control plane processing Processors for centralized node processing Timing signals for the node Non-blocking ATM switch ISLs towards the Extension Subracks Local Ethernet termination for element management Transmission interfaces for termination of all interfaces: Mur interface towards OSS-RC lu interface towards the Core Network Iur interface towards other RNCs lub interface towards the RBSs RNC 3810

Subrack boards Each subrack can house 28 boards, and there are six different board types: SCB, Switch Control Board SXB, Switch eXtension Board TUB, Timing Unit Board GPB, General purpose Processor Board SPB, Special purpose Processor Board ETB, Exchange Terminal Board ET-MC1, 8 E1/J1/T1 transmission ports (PDH) ET-M3, 2 E3/T3 transmission ports (PDH) ET-M4/22, 2 STM-1 or 2 STS/OC-3 transmission ports (SDH unchannelized). Only available for transmission expansion. ET-MF4, 4 STM-1 or 4 STS/OC–3 transmission ports (SDH unchannelized) ET-MC41/2, 1 STM–1 or 1 STS/OC–3 transmission port (SDH channelized) ET-MF41, 1 STM–4 or 4 STS/OC–3 transmission ports (SDH channelized) ET–MFG, 2 Ethernet 1000BaseT transmission ports, one activated and one used for redundancy ET-MFX12/2, 6 Ethernet 1000BaseT ports and SFP (1 Gbps, optical Ethernet) ET-MFX13, 1 Ethernet 1000BaseT port and 6 SFP (1 Gbps, optical Ethernet) RNC 3810 Main Subrack Extension Subrack

Expansion RNC 3810 Type 50 Type 175 Type 300 Type 425 Type 550 Type 675 Main Subrack Main Subrack Expansion Subrack

Dimensioning Traffic Control Capacity The traffic control capacity in the RNC is specified by a parameter called TCPP. TCPP is a measure of “number of subscribers” capacity in each RNC module translated into “user data in bits per second”. The dimensioning of the RNC module is based on this value. TCPP values for the various RNC configurations are listed below. Each Expansion rack will add 38 Mbps and Capacity Enhancement feature will add additional 8 Mbps of Traffic Control capacity. Iub Throughput Max Iub Throughput is maximum supported user data throughput over Iub. It includes uplink, downlink and soft handover. It excludes overhead. The Max Iub of the RNC 3810 is dependent on the size of the RNC. Optional feature RNC HW R5 Capacity Enhancement (FAJ 121 1322) provides the capacity enhancement of 25 Mbps Throughput Capacity for one extension subrack. Maximum number of simultaneous voice calls & URA users The maximum number of simultaneous voice calls that RNC 3810 can support is 26000, and the number of URA users is 128000. RNC 3810

Dimensioning Radio Network capability Up to 2304 cells and 768 RBSs Main subrack can handle 384 cells and 128 RBSs Extension subrack can handle 960 cells and 320 RBSs Maximum number of cell relations is 127 (63 WCDMA and 64 GSM) per cell Maximum number of cell relations is 82944 per RNC Maximum number of neighbour WCDMA cells is 2304 per RNC Maximum number of neighbour WCDMA cells is 7680 per RNC Maximum number of Location Areas is 47 per RNC Maximum number of Routing Areas is 154 per RNC Maximum number of Service Areas is 2304 per RNC Maximum number of active counters is 750000 per RNC Maximum number of all counters is 1200000 per RNC RNC 3810

Contents Chapter 1 Ericsson RNC Chapter 2 Ericsson NodeBs

Common Macro RBS: RBS 3107 Slim size Macro, Outdoor, Released 2005 RBS 3207 Slim size Macro, Indoor, Released 2005 RBS 3106 High capacity macro RBS, Outdoor, Released 2005 RBS 3206 High capacity macro RBS, Indoor, Released 2005 RBS 3116 Outdoor Macro RBS, Released 2007 RBS 3216 Indoor Macro RBS, Released 2007 Distributed Macro RBS: RBS 3412 Indoor RBS Main Unit prepared for up to 6 RRUs. Released 2006 RBS 3518 Outdoor RBS Main Unit prepared for up to 6 RRUs. Released 2006 RBS 3418 Indoor RBS Main Unit prepared for up to 6 RRUs. Released 2006 Micro RBS: RBS 3303 Micro size RBS, Outdoor, Released 2005 RBS 3308 Micro size RBS, Indoor/Outdoor, Released 2006 GSM RBS 2x06 WCDMA Upgrade for combined 2G/3G solution (RBS2206 Indoor Macro & RBS 2106 Outdoor Macro) Combined 2G and 3G RBS on the same footprint (RBS 2216 and RBS 3216) NodeB Portfolio

NodeB Portfolio

RBS Licenses The purpose of license control is to control, with License Keys (LKs), capacity and optional functions of the RBS. After installing one or more corresponding LKs in the RBS, the operator can switched on and off optional features. Activation of LKs is with instalation of License Key File (LKF). LKF contains valid License Keys for the required features, capacities and node’s fingerprint. If no LKs are installed on the RBS, all licensed features are locked, all licensed capacities are limited to 0, 8 CEs are available both for UL and DL. Administrative Correction for Licensing (FAJ 121 1006) Allows for the possibility to correct the licensed capacity level in case it has not initially been correctly set. It also allows for the correction of the functionality level. RBS Channel Elements Downlink (FAJ 121 073 ) Limits the use of available Downlink Baseband hardware capacity to a level specified by the RBS LK. The DL hardware in the RBS is limited to the DL licensed level specified by the LK. DL hardware in the RBS is TX board. Alarm UplinkBaseBandPool_DlHwLessThanDlCapacity is used to point if the licensed capacity cannot be served. availableRbsChannelElementsDownlink shows the amount of DL channel elements. Range:{0..2147483647}; Unit:1 CE licenseCapacityRbsChannelElementsDownlink shows the licensed capacity limit of DL channel elements. Range:{0..2147483647}; Unit:1 CE licenseStateRbsChannelElementsDownlink shows whether the licensed capacity of RBS channel elements for downlink R99 traffic is enabled or disabled. RBS Channel Elements Uplink (FAJ 121 072 ) Limits the use of available Uplink Baseband hardware capacity to a level specified by the RBS LK. The UL hardware in the RBS is limited to the UL licensed level specified by the LK. UL hardware in the RBS is RAX board. Alarm UplinkBaseBandPool_UlHwLessThanUlCapacity is used to point if the licensed capacity cannot be served. availableRbsChannelElementsUplink shows the amount of UL channel elements available for R99 traffic and EUL traffic. Range:{0..2147483647}; Unit:1 CE licenseCapacityRbsChannelElementsUplink shows the licensed capacity limit of UL channel elements. Range:{0..2147483647}; Unit:1 CE licenseStateRbsChannelElementsUplink shows whether the licensed capacity of UL channel elements is enabled or disabled. NodeB Licenses

Capacity Licenses Number of Carriers in RUW/RRUW based RBS (FAJ 121 1344 ) This LK determines the number of carriers using RUW/RRUW that are allowed to be configured in an RBS. There can be up to 12 carriers per RBS. The number of carriers in the RBS must be lower or equal to the licensed level. Number of 40 W Power Amplifiers in RUW/RRUW based RBS (FAJ 121 1347) This LK determines the number of 40 W power amplifiers in Main-Remote RBS, that are allowed to be configured. There can be up to 12 power amplifiers with an output power of 40 W per RBS. The number of power amplifiers configured to 40W nominal output power in the RBS must be lower or equal to the licensed level. maxTotalOutputPower controls nominal output power of each RRU/RRUW. Each time a power amplifier is configured with a certain nominal output power the setting is compared with the licensed level. TpaDevice_NumberOf40WPowerAmplifiersExceedsLicensedLimit alarm is issued if the LK expires, is removed, or its value is decreased below the number of power amplifiers configured to operate at an output power of 40 W. Number of 60 W Power Amplifiers in RUW/RRUW based RBS (FAJ 121 1348) This LK determines the number of 60 W power amplifiers in Main-Remote RBS, that are allowed to be configured. There can be up to 12 power amplifiers with an output power of 60 W per RBS. The number of power amplifiers configured to 60W nominal output power in the RBS must be lower or equal to the licensed level. maxTotalOutputPower controls nominal output power of each RRU/RRUW. Each time a power amplifier is configured with a certain nominal output power the setting is compared with the licensed level. TpaDevice_NumberOf60WPowerAmplifiersExceedsLicensedLimit alarm is issued if the LK expires, is removed, or its value is decreased below the number of power amplifiers configured to operate at an output power of 60 W. NodeB Licenses

RBS 3206 Macro Indoor & RBS 3106 Macro Outdoor Configurations 3206 3106

Configurations 1x1 (one sector with one carrier) to 3x4 (three sectors with four carriers per sector) / 6x2 per cabinet Maximum available configuration for dual-band is 3x2+3x2 (three sectors with two carriers per frequency band) Output Power: 2100 MHz (20,30,40 and 60W), 1900 MHz (20 and 40W), 850 MHz (20,30,40 and 60W) and 900 MHz (20W and 40W) Receiver sensitivity at 2.1 GHz: with ASC -128.5 dBm and without ASC -127.5 dBm CE: UL/DL 1536/1536 Available Frequency Bands: 850 MHz, 900 MHz, 1900 MHz, 2100 MHz, and 1700/2100 MHz Dual band: 850/1900 MHz; 850/2100 MHz and 900/2100 MHz Supports Tower-Mounted Amplifiers (TMA), Antenna System Controller (ASC), and Remote Electrical Tilt Units (RETU) 2-way Tx-diversity, 4-way Rx-diversity, 64 QAM, HSDPA &EUL (2mS TTI) RBS 3206 Macro Indoor & RBS 3106 Macro Outdoor

Configurations Radio Unit (RU) RU21 has two carriers downlink, and one carrier uplink (with two-branch diversity). RU22 has two carriers downlink, and two carriers uplink (with two-branch diversity). Number of units: 1 – 9 RBS 3206 Macro Indoor & RBS 3106 Macro Outdoor Exchange Terminal Board (ET) The ET board implements transmission ports. Boards of different types can be mixed. Types of boards: ET-MC1, 8x E1(2Mbps), T1 (1.5Mbps), or J1 (1.5Mbps) ports per board ET-M3, 2x E3 (34Mbps), J2 (6Mbps) or T3 (45Mbps) ports per board ET-M4, 2x STM-1/OC-3c (155Mbps) ports per board ET-MC41s, 1x Channelized STM-1/OC-3 (155Mbps) port per board ET-MFX11, 6x10/100/1000 Mbps Electrical Ethernet connectors and 1x1 Gbps Optical Ethernet connector per board ET-PSW, 1x10/100 Mbps Electrical Ethernet and 1x100 Mbps Optical Ethernet connector per board If we want Dual Stack transmission than ET-MFX board can be used together with the other ATM ET boards. Number of units: 1 – 8

Configurations Random Access and Receiver Board (RAXB) The RAX board is used for uplink digital processing. All RAX boards in the RBS baseband pool are used for processing of incoming data at the same time. RAX boards are available with different CE capacities. Extra capacity is added by license keys or by adding more boards up to maximum capacity. Two type of RAX boards: RAX R2 with 32, 64 and 128 CE and RAX R2e with 128 CE. They support HSDPA, EUL and Extended Cell range. Board RAX R2e also supports EUL 2mS TTI. Number of units: 1 – 12 RBS 3206 Macro Indoor & RBS 3106 Macro Outdoor Transmitter Board (TXB) The TX board is used for downlink digital processing. TX boards are available with different CE capacities. Extra capacity is added by license keys or by adding more boards up to maximum capacity. Resources for SOHO and Compressed mode are included in all TXB types. There are 5 types of TXB: TX R1/R2 with 228 CE TX R3 with 64, 128 and 256 CE; MBMS and TxD support HSTX-15 with 128 CE; max 64 HSDPA and 32 EUL users per cell; 15 HSDPA codes; MBMS, TxD, 2xMIMO and 64 QAM support HSTX-45 with 384 CE; max 64 HSDPA and 32 EUL users per cell; 45 HSDPA codes; MBMS, TxD, 2xMIMO and 64 QAM support HSTX-60 with 384 CE; max 64 HSDPA and 32 EUL users per cell; 60 HSDPA codes; MBMS, TxD, 2xMIMO and 64 QAM support Number of units: 1 – 4

Configurations Control Base Unit (CBU) Main control functions in the RBS 4 E1, T1, or J1 ports to the transmission network Number of units: 1 to 2 Radio Unit Interface (RUIF) Interface to the RUs Number of units: 1 to 2 Power Distribution Units (PDU) Supplies units with -48 V DC power Number of units: 2 Power Supply Unit (PSU) Converts AC to -48 V DC Number of units: 2 to 4 Battery Fuse Unit (BFU) Supervises, connects, and disconnects the battery backup Number of units: 0 to 1 Auxiliary Unit Hub (AUH) Connect PSU to the EC bus AC Connection Unit (ACCU) Connect and convert incoming AC power DC Heater and DC Connection Unit (DCCU) Internal distribution unit for incoming DC power Filter Units (FU) Contains a Low Noise Amplifier and handles the RF carrier splitting. One-TX-branch downlink and two-RX-branch uplink Number of units: 1 to 6 Fan Control Unit (FCU) & Fan Climate Unit (CLU) RBS 3206 Macro Indoor & RBS 3106 Macro Outdoor

Typical Configurations 1x1 40W or 1x2 20W output power per carrier 3 sectors ASC. Amplifies RX-signals to compensate for feeder loss, increases uplink coverage, supervises antenna, supplies power to RETU. The ASC consists of two dual duplex Tower Mounted Amplifiers (ddTMA) units for support of two antenna array in a crosspolarized antenna. Only one ASC per sector is needed. The ASC power is supplied and supervised from the FU in RBS, via the RF feeder. The ASC should be installed near antenna. RET. The Remote Electrical Tilt Unit (RETU) is used to control the electrical down tilt of antennas, by turning the phase shifter with control signals from the RBS. Antenna. Single-band, Dual-band or Tripple-band RBS 3206 Macro Indoor & RBS 3106 Macro Outdoor

Configurations 1x1 to 3x2 per cabinet Output Power: 20, 30, 40 and 60W CE: UL/DL 768/768 Receiver sensitivity at 2.1 GHz: with ASC -128.5 dBm and without ASC -127.5 dBm Available only at 2100 MHz Frequency Band Tx-diversity, 2-way Rx-diversity, 64 QAM, HSDPA & EUL (2mS TTI) Supports TMA, ASC and RETU All standard hardware units are used in this RBS (RU, ET, RAXB, TXB etc.) RBS 3216 Indoor, RBS 3116 Outdoor, RBS 3207 Indoor and RBS 3107 Outdoor

Configurations Up to 6 RRU 1x1 to 3x2/6x1 per cabinet Output Power: 10, 20, 40 and 60W CE: UL/DL 512/768 Available Frequency Bands: 850 MHz, 900 MHz, 1900 MHz, 2100 MHz, and 1700/2100 MHz Tx-diversity, 2-way Rx-diversity, 64 QAM, HSDPA & EUL (2mS TTI) Supports RETU All standard hardware units are used in this RBS ( ET, RAXB, TXB etc.) except RU Transmission: CBU board contains 4 E1/T1/J1 ports, up to 3 additional ETB possible RBS 3418 Macro Indoor & RBS 3518 Macro Outdoor

Configurations Optical Baseband Interface 2 (OBIF2) OBIF2 board connects the MU subrack to up to six RRUs. The connection is made through the OIL optical fiber cable. Remote Radio Unit (RRU) The RRU is radio unit designed to be installed near the antenna. An optical fiber cable connects the RRUs to the RBS Main Unit. RRU11 Carriers: 1 or 2 Nominal output power 10 W (RRU11 2110) and 20W (RRU11 2120) Receiver sensitivity -126.5 dBm ASC/TMA and RET support (through RIU) Bands: 850 MHz, 900 MHz, 1900 MHz and 2100 MHz MHz RRU22 Carriers: 1 or 2 Nominal output power 10 W (RRU11 2110) , 20W (RRU11 2120) and 40W (RRU11 2140). Receiver sensitivity -127.5 dBm ASC/TMA and RET support (through RIU) Bands: 850 MHz, 900 MHz, 1900 MHz and 2100 MHz MHz RRUW-01 Carriers: up to 4 Nominal output power 20W, 40W and 60W Support for ASC/TMA, Direct RET interface RRU cascading Bands: 850 MHz, 900 MHz, 1900 MHz and 2100 MHz MHz Remotely extends the RBS reach by up to 15 km. RBS 3418 Macro Indoor & RBS 3518 Macro Outdoor

Typical Configurations “Main-Remote solution” 1x1 40W or 1x2 20W output power per carrier 3 sectors RET. The Remote Electrical Tilt Unit (RETU) is used to control the electrical down tilt of antennas, by turning the phase shifter with control signals from the RBS. Antenna. Single-band, Dual-band or Tripple-band Star or cascade Solves the feeder loss problem by enabling the entire radio to be placed adjacent to the antenna. RRU is connected to the Main Unit through an optical fiber. Break even point for 7/8” feeder length comparing macro RBS with 10W Main-Remote: RBS 3418 Macro Indoor & RBS 3518 Macro Outdoor

Configurations 1x1 configuration Output Power: 5W and 20W Receiver sensitivity: -126.2 dBm with 2-way Rx diversity without ASC CE: UL/DL 128/128 Available at 850 MHz, 1900 MHz and 2100 MHz Frequency Bands Tx-diversity, 2-way Rx-diversity, 64 QAM, HSDPA & EUL (2mS TTI) Supports TMA, ASC and RETU RBS 3303 Micro Outdoor

Configurations 1x1 20W or 1x2 10W output power per carrier Output Power: 10 and 20W Receiver sensitivity: -128.9 dBm Rx div with ASC and -127.9 dBm Rx div without ASC CE: UL/DL 256/256 Available at 850 MHz, 1900 MHz, 17/2100 MHz and 2100 MHz Frequency Bands Tx-diversity, 2-way Rx-diversity, 64 QAM, HSDPA & EUL (2mS TTI) Supports TMA, ASC and RETU 8 x E1/T1/J1 or 2 E3/T3 or 2 STM-1 (Mixed configuration: 4 x E1/T1/J1 + 2 E3/T3 or 4 x E1/T1/J1 + 2 STM-1) Cascading up to 3 RBS 3308 Prepared for IP over Ethernet RBS 3308 Micro Indoor & Outdoor

Basic Transport features With IP solution operaters are able to use native IP over Ethernet in the Iub transport between RBS and RNC. This will be alternative to existing ATM over PDH/SDH. 3GPP has defined ATM, IPv4 and IPv6 transport options for Iub. Iub over IP/Ethernet will enable IPv4 for Iub. ATM Interfaces in RAN (FAJ 121 368) Covers the functions and characteristics of the ATM transmission line interface boards (ETB) for RNC, RBS and RXI. IP Interfaces in RAN (FAJ 121 964) Covers the functions and characteristics of the IP transmission line interface boards (ETB) for RNC, RBS and RXI. ATM & IP dual stack in RNC (FAJ 121 1221) Allows a mix of ATM and IP transport on all interfaces in RNC. With feature ATM and IP Dual Stack support in RBS we are able to use both ATM and IP transport alternatives on the Iub user plane for a particular RBS in parallel. We can chose IP or ATM transport per RAB, configure it in the RNC and activate it per RBS. The supported ATM and IP Dual Stack Support in RBS configuration is to migrate all or a part of the user plane to IP transport. The idea is that control plane, sync and O&M remains on ATM transport, and the rest of the traffic to move on IP. For full IP transport in RNC support the following optional features are required: FAJ 121 973 SS7 over IP, FAJ 121 976 IuPS user plane over IP, FAJ 121 1119 IuCS user plane over IP, FAJ 121 1120 Iur user plane over IP, FAJ 121 118 Iub over IP/Ethernet in RNC and FAJ 121 1154 Network synch server for IP transport. IP SOLUTION

Optional Transport features SS7 over IP (FAJ 121 973) Provides the possibility to transport SS7 signalling over IP. The required HW interfaces is Gigabit Ethernet Transmission board. Iur User Traffic over IP (FAJ 121 1120) Enables IP over Ethernet to be used for connecting the Iur user plane between two RNCs. The required HW interfaces is Gigabit Ethernet Transmission board. IuPS User Plane Traffic over IP (FAJ 121 976) Enables IP over Ethernet to be used for connecting the user plane between RNC and SGSN. The required HW interfaces is Gigabit Ethernet Transmission board. IuCS User Plane Traffic over IP (FAJ 121 1119) Enables IP over Ethernet to be used for connecting the user plane between RNC and MGW. This feature requires the optional RAN feature FAJ 121 964, IP interfaces in WCDMA RAN. Iub over IP/Ethernet in RNC (FAJ 121 1118) Enables the IP/Ethernet transport for Iub at the RNC. IP over Ethernet can also be used for subset of Iub connection of RBSes to RNC at the same time as ATM is used for another Iub connection sub-set. Iub Transport Split for Best Effort Data (FAJ 121 1101) Makes possible to use public IP transport services (eg xDSL), for the WCDMA RAN Best Effort data traffic by allowing parallel TDM and Ethernet Iub transport links with different QoS characteristics to one and the same WCDMA RBS. Transport split for best effort data on Iub is usually created with optional feature FAJ 121 1311, ATM and IP Dual Stack support in RBS. Iub over IP/Ethernet in RBS (FAJ 121 1132) At the RBS this feature enables the IP/Ethernet transport for Iub. The required HW interfaces is Multifunctional Ethernet Transmission Interface board. This feature requires the optional RAN features to be instaled: FAJ 121 964, IP interfaces in WCDMA RAN and FAJ 121 1118, Iub over IP transport in RNC. IP SOLUTION

Optional Transport features Network Synch Server for IP transport (FAJ 121 1154) Enables network synchronization for RBSs only connected with IP. It provides the Synch Server part of the function in RNC or RXI. Feature Network Synch Client for IP transport should be implemented in the RBS. The required HW interfaces is Multifunctional Ethernet Transmission Interface board. This feature requires the optional RAN features to be instaled: FAJ 121 1132 Iub over IP transport in RBS, FAJ 121 1118, Iub over IP transport in RNC and FAJ 121 1155 Network Synch Client for IP transport. Network Synch Client for IP transport (FAJ 121 1155) Enables network synchronization for RBSs only connected with IP. It provides the Synch Server part of the function in RNC or RXI. Feature Network Synch Server for IP transport should be implemented in the RBS. The required HW interfaces is Multifunctional Ethernet Transmission Interface board. This feature requires the optional RAN features to be instaled: FAJ 121 1132 Iub over IP transport in RBS, FAJ 121 1118, Iub over IP transport in RNC and FAJ 121 1154 Network Synch Server for IP transport. Iub over IP/Ethernet using Pseudo Wire (FAJ 121 1167) E1/T1s can be converted to IP/Ethernet and be connected over a packet based network with Ethernet interface. This is possible with introduction of Ethernet Pseudo Wire Interface Board in RBS or a stand alone remote pseudo wire box and a Pseudo Wire Aggregation Gateway node on the RNC side. ATM & IP dual stack in RBS (FAJ 121 1311) With implementing this feature we are able to have a mix of ATM and IP transport for Iub in an RBS. It makes it possible to use IP transport with lower quality than when using Iub over native IP only. This feature requires the optional RAN features to be instaled: FAJ 121 1132 Iub over IP transport in RBS and FAJ 121 1221 Iub over IP/Ethernet in RNC. IP SOLUTION

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