Briefly, to give some substance, the scope of use of batteries in Telstra today is considerable and I can give you an appreciation in this following Table.
Here, the terms controlled and uncontrolled environments really refer to the ambient conditions the batteries operate in.
There are still a range of different battery bus voltages. Note that the 48V systems are historically telephony-driven. 12V and 24V systems are typically used in the newer optical fibre and wireless services
And the capacities I am going to list are typically achieved with multiple-bank designs.
- large Central Office of classical understanding,
- smaller Central Offices and these include suburban exchanges,
- host of Customer loop requirements, typically in uncontrolled environments such as curb-side cabinets and small huts,
- mobile network base stations,
- remote stand-alone photo-voltaic power systems. These are active cycling batteries, not stand-by, but use of VRLA batteries in these applications has taught as a lot.
- and UPS- an increasing area for Telstra for back-up of video head-end, datacom centres, and of course, Internet services.
