"KALLCOST" by Pete Sipple
              Written for the Psion Series 3  (March 1994)


This is a short procedure based on an original procedure written by Ken Dudley, 
adapted from Dean Wade's KALL.

Procedure allows call costs to be calculated either during a phone call,
or prior to making a call.

Includes costs for Mercury Calls, BT Direct Dialled Chargecard Calls, Mercury
Chargecard Calls and BT payphones, as well as standard BT charges.

KallCost has been designed as a no-frills procedure, so's not to waste valuable
RAM. If you feel that KallCost is missing a vital feature, please let me know.


The procedure creates a small "defaults" file called KALLDEF.ODB in the
\OPD\ directory.

* Note * The structure of KALLDEF.ODB has changed slightly with Version 5.6 - existing default files will be overwritten. This will not cause any problems, and you will be prompted for new defaults when you first run Version 5.6




This release now include details of the new charges which come into effect
on 9th March 1994, following the introduction of BT & Mercury's daytime tariff.

I am waiting for clarification of how the new tariffs will affect payphones and
chargecards. Until I hear otherwise, I am assuming that the Dec 93 rates still
apply.



International Calls
===================
Basic provision has now been made for international calls. At the present time,
the user will be required to enter the rates themselves. This is to save RAM.
Once a rate has been entered once, it will be remembered for future calls.
This will allow users to set up one frequently called country. Please Email
me if you need a current rate. At the moment, International call calculation
is in it's early stages. If there is sufficient demand, I will work on an
improved way of calculating overseas costs. A major problem with International calls, is timebands. Most, but not all, international destinations from the UK have a Standard Rate (8am-8pm weekdays), with Cheap Rate (8pm-8am & weekends). This is not always the case, and should be considered before relying on the figures supplied by KallCost. Charges for Payphones/Chargecards have not been implemented at this stage.




Zmodem Transfers
===============
KALLCOST also includes a calculator for ZMODEM transfers. At present, this is
only a rough guide, and only allows for transfers at 2400Baud. If someone
out there lets me have accurate transfer rates for other baud rates and
protocols, I will include them in future revisions.



Contacting me
===========

Please let me know your comments or suggestions regarding this procedure.
I can be reached by Email at the following addresses:


psipple@cix.compulink.co.uk (checked daily)
Compuserve:100333,3266


Disclaimer
========

New releases are issued shortly after price changes from BT or Mercury. Please
contact me if your release is out-of-date. Please note that I can accept no responsibility
for any inaccuracies in charging information. Rates are constantly subject to change, and
the method for calculating calls is becoming increasing complex. For this reason I cannot
always guarantee that the information is correct. Please let me know if you discover any
problems, so that I can keep up-to-date.

Although this procedure is not over user-friendly, it is at least fairly
stable. However, I cannot accept any liability for loss or damage, as a result of
using this procedure.






KALLCOST.OPO is released into Public Domain, and I am not looking for any
payment for this procedure.

I hope that you find this procedure useful.





Written by: Pete Sipple
            27 March 1994