Nortel Networks 553-3001-211 manual NT8D17 Conference/TDS card, Companding law Jumper at J3

Option settings Page 123 of 894

NT8D17 Conference/TDS card

Switch and jumper settings are used to select the companding law and to change the conference attenuation PAD levels. These PAD levels are used if prompt CPAD = 1 in LD97. The J1 connector on the faceplate is reserved for future use.

You can enable or disable a warning tone for conference calls. When the option is enabled, the tone lets callers know they are entering a conference call. The switch for this option is preset to disable the warning tone.

Companding law			Jumper at J3
µ-law (North America), A-law		connect pins 2 and 3
Special cases		connect pins 1 and 2
			SW2 (see Note)
Attenuation levels	1		2	3
10.2 db	on		on	on
8.5 db	on		off	on
6 db	off		on	on
6 db	off		off	on
4.5 db	on		on	off
3 db	on		off	off
0 db	off		on	off
0 db	off		off	off

Note: Set position 4 to ON to disable the warning tone option. When the warning tone is enabled, select the warning tone level as shown below.

Level	Jumper at J2
24 db	connect pins 1 and 2
30 db	connect pins 2 and 3

Circuit Card Description and Installation