Nortel Circuit Card, Installation Manual, Page: 102 / 908

Page 102 of 906 Option settings
553-3001-211 Standard 3.00 August 2005
QPC528 CO/FX/WATS Trunk cards . . . . . . . . . . . . . . . . . . . . . . . . . . 143
QPC471 Clock Controller card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
QPC525, QPC526, QPC527, QPC777 CO Trunk card . . . . . . . . . . . . 145
QPC550 Direct Inward Dial Trunk card. . . . . . . . . . . . . . . . . . . . . . . . 146
QPC551 Radio Paging Trunk card . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
QPC595 Digitone Receiver cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
QPC577, QPC596 Digitone Receiver daughterboards . . . . . . . . . . . . . 150
QPC720 Primary Rate Interface card . . . . . . . . . . . . . . . . . . . . . . . . . . 150
QPC775 Clock Controller card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
QPC841 4-Port Serial Data Interface card . . . . . . . . . . . . . . . . . . . . . . 153
Circuit card grid
Some circuit cards contain option switches or jumpers, or both, that define
specific functions. A switch or jumper can be identified by an alphanumeric
coordinate (such as D29) that indicates a location on the card, or by a switch
number (such as SW2) printed on the circuit board (see Figure 17). Positions
on a switch (for example, positions 1, 2, 3, and 4 on SW2) are labeled on the
switch block.
On a circuit card:
• ON may be indicated by the word “on,” the word “up,” the word
“closed,” the number “1,” an arrow pointing up, or a solid dot (•).
• OFF may be indicated by the word “down,” the word “open,” the number
“0,” or an arrow pointing down.