Setting the NT4G19EA Power Supply for 115 or 220 Vac Operation 17
Practice 450-1011-201
(4) Install the line and service cards in their assigned positions according to the
configuration worksheets in the Site Records, 450-1011-152. Use the following
guidelines:
•
The line and service cards are identified by their part numbers on the
solder side of the printed circuit board as follows: ,
NT4G29AH CO Line card
NT4G29AJ E&M Line card
NT4G29AE DTMF Receiver card.
•
The Peripheral Interface (PIF) card is factory-installed, but must be
reseated when the SRU is installed.
•
Set or verify the settings of the DIP switches on the CO line card
according to the Site Records, 450-1011-152, or consult the system
engineer. The settings are as follows:
1
2
3
4
Loop Start
Off
On
Off
Off
Ground Start
On
Off
On
On
Figure 6-8
Switch S1 on the CO Line Card
1
2
3
4
ON
Loop-Start
Ground Start
= Selected ON
S1
NT4G29AH CO Trunk
Line Card
(Top View)
450-0541
•
Insert the line and service cards from left to right in Row C beginning at
Slot 10. If there are more cards than Row C can accommodate, install
them from right to left beginning at Slot 10 of Row B. Similarly, when
Row B is filled, fill Row A beginning at Slot 10. (The E&M Line card and
DTMF Receiver card require one slot from each of two rows, such as Slot
8 of Rows A and B.)
•
Insert the -48 Vdc Converter cards (Part No. NT4G29AG) in Slot 11 of
each row equipped with line or service cards.
