Who said Timing didn't just arrive from thin air?

We're living in a fast moving world, and network design and delivery fits that description admirably. Gone are the days where the timing of network was an integral part of network design and rollout – the technologies that required a level of timing to work effectively are now legacy and beyond.

Nodes need to be in phase with each other to deliver ever demanding services

Today's network technologies, such as Carrier Ethernet, do not in themselves need extensive timing deployment to operate, but they do often have services at the edge of the network that need timing performance to work. We're moving now from the transport of frequency (generally to ensure mobile network Node Bs have sufficient frequency stability to hold their channels and bandwidth), to LTE-A and beyond where nodes need to be in phase with each other to deliver ever demanding services.

As an 'old school" timing geek I've often criticised (under my breath of course!) network designers for believing that "sync is just there", as if it appears out of the ether. Well as we are trialling and deploying the IGM-1100i more and more we are actually seeing this happening.

The picture is typical of what we can deliver. This is really "spot the IGM", sitting on a cable tray in a breeze block equipment room with no windows and metal doors. Without any assistance (the IGM supports A-GPS) this IGM locked to GNSS as a Primary Reference Time Clock (PRTC) seeing 8 satellites; allowing it to operate as a PTP GrandMaster within 100ns of UTC!

Typical cost of deployment? One person for at most one day (maybe half a day depending on the extent of the deployment). Roof rental cost for GNSS installation – ZERO. Crane hire to get access to the roof? ZERO. Cost of making good fire breaks? ZERO. Landlord and management costs for planning and delivery of GNSS Antenna installation on the roof and through the building? ZERO.

Time from thin air – I can see it now!!

Time from Thin Air

IGM-1100i sitting on a cable tray in a breeze block equipment room with metal doors and no windows

GPS WEEK ROLLOVER