Karel MS48. SMDR/CDR data format and connection settings


This data is being extracted with help of the "Advanced PBX Data Logger" software only. It may not applicable for other software titles.

PKCR Card to PC

Connector Pin No Signal 25-pin card connector 9-pin PC connector
1 +10 VDC 4 7
2 -10 VDC 20 4
3 TXD 3 2
4 RXD 2 3
5 PC GND 7 5


The data exchange protocol is using a baud rate of 4800 Bps, 8 data bits, 1 Stop bit and no parity.

RS232 card to PC

Connector Pin No Signal 25-pin card connector 9-pin PC connector
1 TXD 3 3
2 RXD 20 6
3 GND 7 5

For this use a baud rate of 2400 bps, 8 data bits, 1 stop bit, and EVEN parity.

Data items

DescriptionData typeColumn name
Call typestringCALL_TYPE
DirectionstringDIRECTION
Call timedatetimeCALL_TIME
Call durationdatetimeCALL_DURATION
Call duration (s)integerCALL_DURATION_S
ExtstringEXT
TrunkstringTRUNK
PhonestringDIALED_PHONE

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