Nt8d17 conference/tds card – Nortel Networks 1000 User Manual
Page 93
NT8D17 Conference/TDS card
93
Table 33
NT8D15 E and M Trunk card (cont’d.)
Mode of operation (Note 2)
2-wire trunk
4-wire trunk
DX tip & ring pair
Jumper
(Note 1)
Type I
Paging
Type I
Type II
M—rcv
M—xmt
E—rcv
M—xmt
J5.X
off
off
off
off
(Note 4)
(Note 4)
J6.X
off
off
off
off
on
on
J7.X
off
off
off
off
on
on
J8.X
off
off
off
off
on
on
J9.X
Pins 2–3
Pins 2–3
Pins 2–3
Pins 2–3
Pins 1–2
Pins 1–2
Note: Jumper strap settings J1.X through J9.X apply to all 4 units; "X" indicates the unit number, 0–3.
Note: Off indicates that no jumper strap is installed on a jumper block.
Note: Paging trunk mode is not zone selectable.
Note: Jumper strap installed in this location only if external loop resistance exceeds 2500 ohms.
Note: Dot next to the jumper block indicates pin 1.
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
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.