Nortel Networks 553-3001-211 manual DTE/DCE mode, Device, Pair

Option settings Page 131 of 894

both switches are shown in Table 42. To avoid system problems, switches SW15 and SW16 must not be configured identically.

Table 42

QSDI paddle board address switch settings

SW15	Port 1	Port 2				Switch settings
SW16	Port 3	Port 4	1*	2+	3		4	5	6	7	8
	0	1	E	X	off		off	off	off	off	off
	2	3	E	X	off		off	off	off	off	on
Device
	4	5	E	X	off		off	off	off	on	off
pair
	6	7	E	X	off		off	off	off	on	on
addresses
	8	9	E	X	off		off	off	on	off	off
	10	11	E	X	off		off	off	on	off	on
	12	13	E	X	off		off	off	on	on	off
	14	15	E	X	off		off	off	on	on	on

*To enable ports 1 and 2, set SW15 position 1 to ON. To enable ports 3 and 4, set SW16 position 1 to ON. + For each X, the setting for this switch makes no difference, because it is not used.

DTE/DCE mode

Each serial port can be configured to connect to a terminal (DTE equipment) or a modem (DCE equipment). Instructions for setting the DTE/DCE switches SW2, SW3, SW4, SW5, SW6, SW7, SW8, and SW9 are shown in Table 43.

Example: Port 1 is changed from DTE to DCE by reversing every switch position on SW3 and SW2; i.e., switches that were off for DTE are turned on for DCE, and switches that were on for DTE are turned off for DCE.

Circuit Card Description and Installation