Our Applications & Solutions

PTP GrandMaster Clock, 32 Clients

Part Number:
IGM-1100o v2



The synchronization needed for indoor small cell operations requires a high accuracy timing receiver nearby. Until now, this proximity required an expensive and often complicated GNSS antenna installation for a few small cells. In some scenarios, it is not possible to deploy the Microsemi IGM-1100i due to limited building materials, urban canyons, or other constraints. The Microsemi IGM‑1100o (also referred to as the Outdoor IGM) addresses this use case. The IGM‑1100o brings precise timing indoors and serves indoor small cells, but is located on the roof of the building instead of on a wall or ceiling.

The Microsemi IGM-1100o does not require Assisted-GNSS as it is placed outdoors, where GNSS signal reception is optimal. However, in urban canyons or other situations where GPS reception is challenging, the Outdoor IGM can leverage Assisted-GNSS. The IGM‑1100o uses Power over Ethernet (PoE) to further simplify the installation. When mounted on the roof and connected to the network with PoE, the unit automatically self-configures through TR-069, locks to GNSS signals, and begins PTP grandmaster operations. On-premise user configuration is not necessary.


  • Small form factor with single 1 GbE RJ45 port
  • PTP profiles: ITU-T G.8265.1, ITU-T G.8275.1 (L2 multicast), ITU-T G.8275.2 (L3 unicast), Telecom 2008, and Ethernet default
  • One-step and two-step clock
  • SyncE input, output
  • PTP input for GNSS backup
  • Up to 32 clients
  • PRTC-compliant
  • IPv6 support for 1588 traffic
  • 802.1Q VLANs
  • Integrated GNSS receiver
  • GPS, Glonass, Beidou, SBAS, and Galileo-ready


  • Reduced installation costs and simplified cabling
  • Plug and play features reduce deployment time and cost
  • Ruggedized device that supports a wider temperature range
  • Best-in-class sync solution
  • Provides precise time for environments where temperature range is an issue, or environmental constraints require ruggedization

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