CANCEL MAIL

CANCEL_MAIL		0x0065	101	AMC 07.00
$CANM L101 L102 NM255 U255 $CANM L101 L102 $CANM LV L102			cancel specified mail/priority, here all cancel all mails from this sender cancel all mails in destination’s queue
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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