Nokia Net Monitor description (DCT3)

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Test 63 – Call Attempts Counters

Available in: 2100, 3330, 5110, 6150, 6210, 7110, 8210, 8250

Test screen	Help screen

CalRel: The reason the last call was cleared (disconnected). See “Test 39 – Reason for Last Call Release” for more information about this value. [GSM 04.08:F,G,H]

RelDi: Additional information about how the last call was cleared. Can be:

MT: Mobile Terminated – The network disconnected the call.
MO: Mobile originated – one of the phones disconnected the call.
IN: Internal – the call could not go ahead/was disconnected due to an internal problem (such as no coverage).
UN: Unknown – The reason is unknown. This is also displayed after power-on.

MOCAtmp: Number of dialled (MO) calls attempted (in decimal). This counter is increased whenever the call button is pressed to make a call.

MOOK: Number of successful dialled (MO) calls (in decimal). This counter is updated when the network delivers a CONNECT message. Note, when calling some other network (GSM, PSTN) this counter may be updated once the phone at the other end starts ringing, in other words, when the “Hold” function appears on the phone’s screen. This is due to issues with some networks not properly signalling the MS.

AllMT: Number of calls attempted to be received (MT) (in decimal) (this includes missed calls)

MTOK: Number of successful received calls (in decimal). This counter is incremented when the call is answered. Hence it does not include missed calls.

The successful and attempted counters have a maximum display of 3 digits. This means you will only see the last 3 digits of the actual value, so after 999 it will appear to wrap around to 0.

It is then possible to calculate the number of failed attempts by subtracting the successful number from the attempted number, provided the counters have not wrapped around more than once. Note for the MT calls, the failed counters will include missed calls.

These counters can only be reset with “Test 60 – Reset Counters”. The values are stored in the EEPROM, and are preserved across reboots, SIM card changes, and even software upgrades (provided the EEPROM is not cleared). Note, they are only saved when the phone is properly powered off, hence if the phone crashes or the battery is removed, the totals will not be updated.

These counters are useful for determining how many calls you may have attempted alled/received during a period of time (you can reset them to start from 0, or remember the previous value and subtract that). These counters cannot really be used to dispute bills however, since they are technically alterable, and can be made not to update by disconnecting the battery. Nor do they necessarily show if a call was answered (see above).

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Port: 9201