Nortel Networks Circuit Card 311 - Manual (Page 96)

96 Option settings
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
NT8D21 Ringing Generator AC
Settings
Frequency Amplitude P1 P2 P3
20 Hz 86 V ac open open 2–5
8–11
25 Hz 70 V ac open 1–4
7–10
open
25 Hz 80 V ac open 3–6
9–12
open
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.