Time Synchronisation Solutions for Telecoms Applications
Meinberg’s LANTIME grandmaster clocks, available in the UK exclusively from APC Time, are designed to fulfil the synchronisation requirements of modern 4G/LTE networks. A LANTIME time server can act as a Primary Reference Time Clock (PRTC) and, due to its unmatched flexibility, can be deployed in multiple areas of the modern telecom network; in the core, metro or access levels.
By supporting multiple input sources utilisingMeinberg‘s IRSA (Intelligent Reference Switching Algorithm) technology, the LANTIME accepts GPS, GLONASS, Galileo, BeiDou, PTP, SyncE, 1PPS or E1/T1 as possible synchronisation inputs to be able to act as an Edge Grandmaster Clock. IRSA is useful to bridge potential GNSS outages or, if desired, completely avoid the dependence on GNSS availability.
The LANTIME systems are equipped as standard with a highly stable oscillator that ensures a holdover period of several hours or days depending on the target application, even if no synchronisation source is available to the unit. The LANTIME units can also be synchronised to an existing Primary Reference Clock (Caesium or Rubidium) via a 1PPS or 10Mhz connection.
Meinberg supports ITU-T profiles, ITU-T G.8265.1 for frequency and ITU-T G.8275.1 for frequency and phase. Utilising the HPS-100 card to network elements requiring synchronisation, including 2G/3G/4G base stations as well as LTE advanced networks. A LANTIME system can act as a Telecom Grandmaster for thousands of individual clients over multiple subnets.
For NTP-based synchronisation, each of the PTP module network interfaces of a LANTIME IMS system can be configured to act as a carrier grade hardware timestamped NTP server with 8 ns time stamp accuracy, serving up to 400,000 NTP requests per second on each port.
The modular approach of the IMS platform allows field-replacement and hot-swap capabilities for IO modules and power supplies. This concept is future-proof and ensures expandability by allowing the addition and replacement of modules when new technologies or interfaces are required, making this one of the most scalable and flexible synchronisation solutions on the market.