Black Box 5000 manual Dte

CHAPTER 9: Data-Channel Configuration

Table 9-6. CCM and 6-Channel CEM (MX215C only)

Local Sync Channel Interface Configured to DTE

Multiserver					DTE
		Constant	Controlled
Pin	I/O	Carrier Mode	Carrier Mode	Pin		I/O	Signal
4	I	Off-to-On transition	On-to-Off transition	4		O	RTS
		raises CTS.	forces CTS off
5	O	Set on after RTS goes on. Set off when RTS goes off.		5		I	CTS
8	O	Forced ON.	Set on when Multiserver	8		I	CD
			has output data. Set off
			when all data delivered.
22	O	2 seconds on/4 seconds off when start ring frame received		22		I	RI
		from remote unit. It is held off when stop ring frame is
		received from remote unit or when DTR is on
		(Bell 103 emulation).
20	I	Send changed to remote unit as detected. DTR on holds		20		O	DTR
		RI off.
6	O	Change as dictated by remote unit.		6		I	DSR
25	I	Send changes to remote unit as detected.		25		O	BUSY
11	I	Not used.	Not used.	11		O	Unassigned
15	O	Not affected by carrier mode.		15		I	TX Clock
17	O	Not affected by carrier mode.		17		I	RX Clock
18	I	Not affected by carrier mode.		18		O	External
							RX Clock
24	I	Not affected by carrier mode.		24		O	External
							TX Clock
Key:		I = input; O = output

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