The 2G GSM Private Mobile Network solution replicates a 2G cellular network in software and, along with one or more BTS, allow the user to rapidly deploy a small scale network for a multitude of uses in a number of location.

PMN creates a self-contained, privately owned and managed mobile network based on standard 2G GSM protocols, providing the ability to access voice and DATA services using mobile handsets over a private network. The private network can interface with or replace a PBX to create a fully mobile workforce within the network’s coverage area.

PMN provides 2G GSM for voice, SMS & DATA

PMN can be used in a standalone solution to provide communications services between closed communities of users. Alternatively, it can be integrated directly to a carrier or company network for offsite calls. This allows companies to integrate cellular telephony into their enterprise IP-PBX infrastructure via SIP (Session Initiation Protocol), empowering staff with greater freedom and mobility around their site and reducing mobile call costs for calls made between individuals in the business.


PMN can be installed as a 2G GSM only network or a combination of 3G UMTS and/or 4G LTE.

Business investment in legacy devices is protected while the need to add a wireless LAN infrastructure and employ new phones having multiple wireless interfaces in order to support an integrated IP-wireless solution for employees is avoided. In the private network, mobile handsets are used to make both internal and external calls and to send SMS messages, in exactly the same way as within a macro mobile network.

This self-contained network can be used with either PMN SIM’s (see the SIM Cards page for further information) or a network operators SIM and allowing the user to manual select between either networks.

The PMN software runs on standard Intel server hardware. If the network environment is extended because of a merger or acquisition, then all new sites and communications systems can be incorporated into the same overall network architecture.

The 2G PMN comprises separate software components that together create an integrated switching environment which can be spread across several server platforms to provide resiliency and scale. The Four main components are MSC, SMSC, HLR and BSC.


The software MSC controls access to the private network along with paging, call routing, mobility and handover management it also enables interoperability with PBXs and/or IP-PBXs, thereby extending the reach of any available SIP-based telephony applications.

The outputs from the MSC (Mobile Switching Centre) are SIP. SIP is able to interface with industry standard gateways.


Allows users to send text messages to each other along with the ability for administrators to send messages out to groups of users from within the PMN admin tool, the SMSC also supports SMPP for connecting to and from 3rd party applications.


The Home Location Register holds all the info on the subscriber including details such as IMSI and extension numbers, what features individual users have i.e. voice, SMS and DATA and who can make calls to what, additional features like Calling Name Presentation, Call Waiting and Call Recording are also allocated here.


The Base Station Controller is the link between the MSC and the BTS, it controls the radio resources of the BTS and where you setup details such as Cell ID, LAC, MNC and MCC along with the handover and reselection information.

The solution comprises both hardware and software components. The network signal is provided by a 2G BTS. The BTS is connected to an IP network to allow it to connect to the BSC. PMN can be deployed using a server, or as a hosted service from an accredited service provider.

Any GSM phone can be used to make calls from the workplace for the same cost as calling from an internal telephone extension. Staff can call colleagues on-net, over the corporate network, without incurring any call costs. Mobile calls from the office to external destinations would be charged at the company’s normal landline tariff.


The PMN 2G GSM solution is capable of providing DATA services, the bandwidth available will be determined by how many channels per BTS the user has dedicated to DATA, if the devices is capable of either GPRS or EDGE and the devices proximity to the BTS and of course how many other users are simultaneously transmitting or sending DATA.

Typical GPRS DATA Example

  • up to 85.6kbps (DL) 21.4Kbps (UL) – Class 10 device 4+1
  • up to 64.2kbps (DL) 42.8Kbps (UL) – Class 10 device 3+2

Typical EDGE DATA Example

  • up to 8kbps (DL) 59.2Kbps (UL) – Class 10 device 4+1
  • up to 6kbps (DL) 118.4Kbps (UL) – Class 10 device 3+2

BTS (Base Transceiver Station)

PMN utilises RAN from ip.access (the nanoBTS) and VANU (IBS and Superpico) in the usual frequencies of 850MHz, 900MHz, 1800MHz and 1900MHz, see tech specs for more information.

The PMN software consists of three software components:

  • A Mobile Switching Centre (MSC)
  • A translation and routing database
  • A Short Message Service Centre (SMSC)
  • Plus the option to provide GPRS using an industry standard GPRS Service Node (GSN)

The MSC component of PMN controls the access to the private mobile network and restricts this to known users to provide standard PBX features such as intelligent call routing and short code dialing.

Private Mobile Network (PMN)

Private Mobile Network (PMN) replicates a GSM cellular network in software and, along with one or more Pico cell (also called Base Transceiver Stations), forms the core of all PMN solutions. PMN creates a self contained, privately owned and managed mobile network based on standard GSM protocols, providing the ability to access voice services using 2G and 2.5G mobile handsets over a private GSM network. The private GSM network can interface with or replace a PBX to create a fully mobile workforce within the network’s coverage area.

Download: PMN Technical Specification | Find Out More