This is only a brief summary of costs/benefits of using ISDN DoV versus a normal 56K analogue dial-in access to EON's servers. The prices quoted herein are current at time of publication and is subject to change by Telstra without prior approval.

Let us assume that you currently have a 56K modem and an account with EON, and you have 2 problems.  Firstly, you are unhappy with the speed of your 56K modem, and secondly you have to compete for time on your telephone line whenever you wish to access the WWW.

There are several once-off setup costs plus ongoing costs when choosing ISDN DOV, as with other technologies for accessing the world-wide-web.  These are:

1. Getting a Telstra ISDN OnRamp Home Highway line installed.
   To upgrade your existing single telephone line, the installation cost for Onramp Home Highway is $173 *
   Benefit : You get 2 standard telephone lines down the one cable, plus the option to use ISDN DOV for data transfers at 64K or 128K.
   Note: as ISDN DOV uses synchronous digital transmission, your effective throughput is 70% higher than the best performance achievable from an analog 56K modem.  Or at 128K, you get a 270% improvement.

2. Adding an ISDN DOV modem to your computer
   RRP $267 inc GST - NETjet ISDN PCI Modem or
   RRP $249 inc GST - NETjet ISDN Mouse USB modem (only for Intel Chipset)
   Hint - check with EON to see if there are any plans available that include a NETjet modem.
   Benefit : You can make DOV calls at the full ISDN digital 64K or 128K speeds, for the cost of a 1 or 2 standard telephone calls.

3. Home Highway ISDN Line Rental
   $34.70* per month includes 2 lines/channels - (current Telstra tariffs correct at this time).
   Benefit: For an extra line rental, you can share 2 lines between telephone calls and computer connections eg. 2 voice calls, 1 voice call and a 64K DOV call, or a 128K DOV call.

4. Calls costs to EON.
   For each 64K ISDN DOV call, your call costs will be 18 cents* per call untimed.  Or 36 cents* for a 128K call, untimed. 
   Benefit: For example, if you make one 64K call per day to EON (for as long as you like without being disconnected), for 30 days at 18c/call, then the total call costs = $5.40 per month.
   Or if you make one 128K call per day, for 30 days at 36 cents/call = $10.80 per month.

   *  =  +GST

In summary, once you install OnRamp Home Highway and a ISDN modem, the only additional cost over and above a 56K modem is for the rental of the second telephone line, which you may want anyway. For this you get rapid (1-2 seconds) connection, consistent 64K or 128K performance, fast ping times, error-free connections and access to a second telephone line.