Nortel Circuit Card Installation Manual page 108

Page 108 of 906
553-3001-211 Standard 3.00
Option settings
A set of three switches provides selection of dB values. Use SW5, SW6, and
SW7 for Trunk 0; use SW11, SW12, and SW13 for Trunk 1 (see Table 17).
Table 17
Trunk interface line build out switch settings
Description
0 dB
7.5 dB
15 dB
A set of four DIP switches provides selection among three values for receiver
impedance. Use SW8 for Trunk 0; use SW14 for Trunk 1 (see Table 18).
Table 18
Trunk interface impedance switch settings
Description
75 Ω
100 Ω
120 Ω
August 2005
Switch Setting
SW5/SW11 SW6/SW12
off
on
on
SW8/SW14 Switch Settings
off off
on off
off off
SW7/SW13
off off
on off
off on
on
off
off
off
on
on