Furuno IB-681 manual Command Description, Indication Description

Command description

Command			Description
		Subscriber number specified and called.
		xx ⋅ ⋅	x Subscriber number (20 digits max.)
		Useable characters: "0-9", " " (space), "-", "#"
		" " and "-" can be used to separate digits for clarity; they are not recognized as
		part of subscriber's number.
		"#" is recognized as end code (input is not mandatory).
CRNxx ⋅ ⋅		" ", "-" and "#" are not sent to CU.
	x
		Examples:
		CRN0030081123456789 (Subscriber's number is 003081123456789)
		CRN0030081-12-345-6789 (Same number as above except "-" inserted for
			clarity)
		CRN0030081 12-345-6789# (Same number as first number above except " ", "-"
			inserted for clarity and " #" inserted to show end of
			number)
DIC		Prevents automatic reply to received calls.
CIC		Allows automatic reply to received calls.
Indication description
Indication			Description
INC		Informs DTE of incoming call
INV		Informs of invalid command from terminal.
VAL		Informs of valid command from terminal.
		Informs of "Call failed reply" in response to CRN command.
CFIxx		xx (reason) ET: Subscriber is busy.
			CB: Telephone/fax busy (CU is busy).
			RT: Subscriber's DTE is not answering (subscriber not connected).
			AB: Subscriber not replying ("Scr Vec Ack" not received).

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