i. call charging programs

MS26 systems offer different call charging methods, which are listed below:

Method 1

This method can be used when there are metering pulses on the lines.

Programs

Pulse Price program should be entered for the lines. 

Charge Calculation

Call charge = Unit pulse price x Total number of metering pulses

Note

Unit pulse price is defined by Pulse Price program.

Method 2

This method can be used when there are no metering pulses but Polarity Reversal facility on the lines.

Programs

Pulse Price, Polarity Reversal and Tariff Table programs should be entered.

Charge Calculation

Call charge = Unit pulse price x

Note

Unit pulse price is defined by Pulse Price program.

Call duration is calculated by Polarity Reversal program.

Unit duration is defined by Tariff Table program.

The result of is rounded up to the next higher integer.

Method 3

This method can be used when there are neither metering pulses nor Polarity Reversal facility on the lines.

Programs

Pulse Price and Tariff Table programs should be entered.

Charge Calculation

Call charge = Unit pulse price x

Note

Unit pulse price is defined by Pulse Price program.

Call duration is estimated by the system: The starting time of the call is estimated by adding 30 seconds to the time that the extension accesses the line.

Unit duration is defined by Tariff Table program.

The result of is rounded up to the next higher integer.

The programs required for these three charging methods are explained in the following pages.

Allows defining a unit pulse price to serve the following purposes:

If there are real metering pulses on the C.O. line, the system can start detecting these metering pulses and calculate the cost of the calls according to the number of metering pulses received during the outgoing calls.

If there are no real metering pulses on the C.O. line, the system uses the unit pulse price to calculate the cost of the outgoing calls using Tariff Table program.

Parameters

By Default

No pulse prices are defined for any lines.

Allows activating the Polarity Reversal detection for lines where the C.O. provides Polarity Reversal facility, thus determining the exact starting time of the outgoing calls.

8029 T P

Parameters

By Default

8029 T 0 is active for both lines.

Notes

1. When P = 1, the system does not record the calls established through the lines where the Polarity Reversal is not detected.

If the C.O. is providing Polarity Reversal facility and if parameter P = 1, the system uses Polarity Reversal to calculate the duration of the outgoing external calls in the following way:

The polarity is reversed by the C.O. when the external party lifts his handset and this reversal is noted as the starting time of the call.

The time when the extension hangs up is noted as the ending time of the call.

Thus,

Call duration = Ending time of the call - Starting time of the call

Allows preparing a Tariff Table for charging the outgoing calls.

Parameters

Notes

Using this program, a table which can be simply figured as below can be formed:

ii. listing programs

Allows setting the types of the calls to be recorded.

877 P

Parameters