Nt8d17 conference/tds card – Nortel Networks Circuit Card User Manual
Page 125
Option settings
Page 125 of 906
Circuit Card
Description and Installation
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
Attenuation levels
SW2 (see Note)
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