YateUCN is a powerful equipment in the Core Network, it handles both VOICE and DATA for the Telecom network, regardless of the used radio technology.

Unified EPC/IMS core network

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 (e.g. Dell PowerEdge R430).

YateUCN integrates the EPC layers – MME, PGW, SGW, and PCEF and also includes the IMS layers for VoLTE – PCSCF, ISCSCF, IWF, and BGW.

It communicates with the YateENB (LTE eNodeB module) over S1AP and GTP protocols and uses a JSON API for configuration and management.

Unified GSM/GPRS core network

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

It connects to the YateBTS (GSM module) over GTP and SIP, replacing the costly SS7 MAP-A interface (BSSAP protocol). This leads to a higher return on investment without affecting the reliability of the network or the provided services.

The unified core network solution is based on replacing the eNodeB with the YateENB (LTE) and the base station subsystem with the YateBTS (GSM).

Many areas in the world are not covered by a cellular network due to the cost of existing circuit-switched network technology.

YateUCN brings a new solution for deploying GSM/LTE networks at a lower cost.

Supported Codecs

YateUCN only supports the following codecs of the ITU-T standard, G.711 [also titled as Pulse code modulation (PCM) of voice frequencies]:

  • A-law (PCMA, G.711A)
  • μ-law (PCMU, G.711U)
YateUCN acting as Core Network for a LTE and GSM mobile network

Unified LTE/GSM+GPRS core network, including SGSN, GGSN, GMSC, MME, SGW, PGW
See the product here ››

YateUCN, the Unified LTE/GSM/GPRS Core Network

This section contains information about the unified YateUCN.

YateUCN as an MME/SGW

This section contains information about configuring YateUCN’s MME and SGW functions.

YateUCN as an GGSN/PGW

This section contains information and configuration examples used for charging functions.


This section contains information about the usage of YateUCN as MSC/VLR.

YateUCN as an IMS

This section contains information about configuring YateUCN for IMS

Miscellaneous YateUCN features

Latest Changes

Revision number Time since commit Commit message
4782 17h 58m Added support for allocating a new MME ID for target contexts of S1 handovers.
4777 2d 17h Add the msc_num parameter to user.auth and restore it in call.preroute
This allows charging to match MSC GT even when a Cell ID is also present.
4776 2d 17h Added optional support for S1 handovers to Home ENBs behind an aggregator gateway.
4775 6d 11h Added the new alter_route parameter to the AP configuration API.
4772 7d 16h Updated documentation for charging configuration.
YateUCN 3