unified LTE/GSM+GPRS core network, including SGSN, GGSN, GMSC, MME, SGW, PGW

YateUCN - Unified Core Network solution

Unified EPC/IMS core network

The YateUCN is a unified core network solution intended for new LTE networks, for upgrading GSM/GPRS networks to LTE or for extending existing LTE networks.

The YateUCN software-defined core implements all the functions and protocols of the LTE core network in software, and uses commodity hardware. It integrates the EPC layers – MME, S-GW, P-GW, and PCEF. The YateUCN also includes the IMS layers for VoLTE – P-CSCF, I/S-CSCF, IWF, and BGW.

It communicates with the LTE eNodeBs over S1AP and GTP protocols and uses a JSON API for configuration and management.

Unified GSM/GPRS core network

The YateUCN also implements the functions and protocols of GSM/GPRS core networks. In GSM/GPRS, the YateUCN acts as a SGSN/GGSN/GMSC in a single server. 

Remote access for operations and management

YateUCN is easy to operate and manage remotely using the Yate Mobile Management Interface (MMI) online. The interface makes it accessible to add a new YateUCN unit, to setup a cluster of YateUCNs, to configure a single YateUCN function (GMSC, GGSN or PGW), to configure YateUCN equipment with all its GSM/GPRS/LTE functions and more. With YateMMI operators can remotely manage their entire network equipment using a single web interface.

Here is a link to a demo of the YateMMI, with a preconfigured YateUCN equipment.

Contact us for a YateMMI demo account!

Features and benefits

  • Runs on commodity hardware, allowing for a simplified network architecture and lower deployment costs.
  • Enables carriers to deploy LTE networks with reduced initial investment.
  • Allows for scaling as you go. You can add more servers or separate the functionality as more users adopt your service.
  • Increases network resiliency; in case of equipment failure you can easily configure another server to take up the functions of the fault node.
  • Has low idle traffic, which allows transport technologies like satellite.
YateUCN Unified Core Network in a mixed 4G LTE and GSM/GPRS network


  • SS7 connectivity
  • SIGTRAN, SCTP with CRC checksum
  • M2UA, M2PA, M3UA
  • ITU MAP v3
  • CAMEL phase 2
  • Voice interconnect
  • SIP and RTP
  • ISUP using external MGCP gateway
  • E.212 (ANSI)
  • E.214 (ITU) translation table
  • E.164
  • ETSI MAP v3
  • S1AP r11
  • GTP v1, GTP v2
  • Supported operations:
    • SGSN <-> AuC messages (authentication)
    • SGSN <-> EIR messages (equipment identification, optional)
    • SGSN <-> HLR messages (data mobility management, roaming)
    • SGSN <-> GGSN messages (data session)
    • ENB <-> SGSN messages (LTE control and user data)
  • SIP
  • Supported standards (RFC3261)
  • Registrar function
  • B2BUA for calls
  • RTP (RFC3550) with sideband DTMF (RFC2833)
  • SMS and USSD over IP
  • SMS
  • Format: SMS PDU (MO and MT)
  • MAP/SS7 transport (T-PDU format)
  • SIP MESSAGE transport (SMS over IP, R-PDU format)
  • CDR
  • Flexible file format (default .tsv files) with customizable table headers
  • Automatic file rotation
  • Optional file transfer: FTP, SFTP, SCP
  • JSON HTTP push API
  • RADIUS with 3GPP and Cisco dictionaries
  • Interfaces
  • C Interface (MAP, HLR <-> GMSC)
  • S1 Interface (S1AP & GTP, ENB <-> EPC)
  • Gi Interface (IP, connects to Public Data Network)
  • Gn/Gp Interface (GTP, SGSN and GGSN)
  • Gr Interface (MAP, SGSN <-> HSS)
  • Gc Interface (GTP or SS7/MAP, interface to HLR) (optional)
  • CODECS and transcoders
  • G.711a, G.711u
  • GSM-FR 06.10
  • iSAC
  • iLBC
  • Operating system
    Linux based

Hardware recommendations

  • Dell PowerEdge R430
    3.5″ Chassis with up to 4 Cabled Hard Drives
  • Processor
    Intel Xeon E5-2630 v3 2.4GHz,20M
  • Memory
    8GB RDIMM, 2133MT/s, Dual Rank, x8 Data
  • Hard drives
    1TB 7.2K RPM SATA 6Gbps 3.5in Cabled Hard
  • Hard drive configuration
    RAID 1 for H330/H730/H730P (2 HDDs) with Cabled Chassis
  • Internal controller
    DVD ROM SATA Internal for 4HD Chassis ReadyRails Sliding Rails With Cable
  • Power supply
  • Network adapter
    Intel Ethernet I350 DP 1Gb Server Adapter, Low Profile