Private Mobile eXchange (PMX) 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. PMX 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.
Frost & Sullivan awarded the Entrepreneurial Company Award to PMN due to our role in the advancement of private GSM networks in the UK.
The PMX 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 PBX or IP-PBX infrastructure, empowering staff with greater freedom and mobility around their site and reducing mobile call costs for calls made between individuals in the business.
Business investment in legacy 2G/2.5G 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 GSM 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.
The PMX 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 - GSM, TDM and IP - can be incorporated into the same overall network architecture.
The PMX comprises separate software components that together create an integrated switching environment. The outputs from this mobile exchange are SIP (Session Initiation Protocol) and standard IP for data. SIP is able to interface with industry standard gateways. The IP connection will allow delivery of content to the mobiles using the GPRS protocol.
The software MSC (Mobile Switching Centre) controls access to the Private GSM network and it enables interoperability with PBXs and/or IP-PBXs, thereby extending the reach of any available SIP-based telephony applications. A separate software component provides standard PBX features such as call routing and number translation. These components provide connectivity to the IP network as well as the BSC (Base Station Controller). The BSC connects locally or remotely to one or more BTS (Base Transceiver Station) in order to create GSM access points.
The solution comprises both hardware and software components. The local GSM network signal is provided by a local Pico cell (BTS) delivering signal over low powered GSM. The Pico cell is connected to a local IP network. PMN can be deployed using a local server - the Private Mobile eXchange (PMX), or as a hosted service from an accredited service provider as a Private Mobile Extension.
PMX gives enterprises the ability to control, monitor and selectively decrease mobile spend.
The private mobile network shifts minutes usually accounted for on mobile networks and moves them into an enterprise-owned ‘micro’ cellular network. Call cost savings are specific to, and dependent on, the type of employee using the solution, from their job role through to their calling profile. External calls using the micro cellular network connect to the company’s fixed line services and leave as fixed line minutes. Mobile phones 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.
Private Mobile eXchange (PMX) 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. PMX 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: PMX Technical Specification | Find Out More