CANCEL MAIL

CANCEL_MAIL		0x0065	101	AMC 07.00
$CANM L101 L102 NM255 U255 $CANM L101 L102 $CANM LV L102 $CANM LV L102 NM253 U90 $CANM LV L102 NM255 U90			cancel specified mail/priority, here all cancel all mails from this sender cancel all mails in destination’s queue cancel all mails in destination's queue at priority 90 cancel all mails in destination's queue below priority 90
Delete one or more mail/call request/alarm messages queued at a station. Note to Simple Link Layer format: Sender must be Dir.no. 07.60-08.00: Sender must contain node no L(1)101. $CANM is inverse of built-in command MST, but note that sender and receiver is swapped!
1	NET_OBJ_REF {ECL_STATION}	Sender (source) station NULL (LV) can be used e.g. for technical alarms, or if call-back is not desired.
2	NET_OBJ_REF {ECL_STATION, ECL_ST_GROUP}	Receiver (destination) queuing station or local group. NULL (LV) can be used for deleting all mails from a station (AMC 1022). Parameter 1 must be legal, only mails with flag Automatic Delete (SEND_MAIL) will be deleted.
3	NET_OBJ_REF {ECL_MAIL} . . (optional AMC 08.01)	Mail message to be deleted. See page 17. Mail­-id values are: 1-32 = Standard mails, i.e. cancel a specific mail from this sender 253 = Delete only mail with specific priority in parameter 4.(AMC 11.02) 254 = MAIL_TYPE_CALL_BACK, i.e. cancel any call back mail 255 = any mail, i.e. cancel all mails from this sender
4	UINT1 (Optional AMC 08.01)	Priority. Changes purpose depending on if Parameter 3 is set to 253 When Parameter 3 is set for 253, delete only mails with this specific priority. Otherwise, delete all mails below this priority 255 = cancel all mails from this sender.
5	UINT1 (optional)	Hop Count. AlphaNet: Used to avoid endless mail forwarding. Incremented by AMC, discarded when too large. Default value = 0.
Response:		COMMAND_RESPONSE- the option field is unused

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