This is all about to change with the integration of this ingenious new product from Maestro and the Farmwide roll-out of Points of Presences for the rural community. Availability Maestro and Farmwide are currently field trialing testing the Woomera. For more details, please contact Maestro . Front View , Side View , Top View . Technical Information Research by Maestro Engineers indicates that modem technology can meet the requirements of the 'rugged' rural PSTN, by addressing 6 key areas affecting reliability and adaptability.
Variability is necessary because of the different exchange and line connection types.
The problems caused by having the wrong connection type relate to impedance mismatch and signal level. Mismatched line impedance can have a severe effect on high speed modems due to its impact on echo-cancellation. Failure of echo-cancellation introduces errors because it effects the modems capacity to determine signal origin. Additionally, when the connection type provided from the exchange is basic 600 ohm, TN12 compatibility in the modem causes an effective reduction in signal level transmitted to the exchange. In country areas, sheer distance from the exchange makes signal level crucial to connectivity, hence the inclusion of variable Line Impedance circuitry.