Avaya MCC1 Hardware Manual page 53

TN1654 DS1 Converter Switch Settings
1 2
up
T1 120 ohms
ESF
1
down
E1 75 ohms
D4
1. Although the TN1654 circuit pack supports 75 ohms, use the 127A BALUN to convert the 120
ohms to 75 ohms rather than the switch settings.
1 Set the configuration switches on the TN1654 as required per site.
Set Switch 6 down (disabled).
2
Switch 6 may not be present (or active) on all TN1654 DS1 Converter circuit packs.
Set Switch 1 up for T1 facilities.
3
All subsequent facility switch settings (Switches 2-5) reflect T1 framing on each of the 4
facilities. See ''Examples of typical settings'' on page
Set Switch 1 down for E1 facilities.
4
All subsequent facility switch settings (Switches 2-5) reflect E1 impedance on each of
the 4 facilities. See
Examples of typical settings
Switch Settings Description
T1 ESF
T1 ESF
Span A through D Framing set for ESF
1 2 3 4 5 6
swdft1es KLC 092799
T1 D4
Span A through D Framing set for D4
1 2 3 4 5 6
swdft1d4 KLC 092799
E1 120 ohms ESF
S
Span A through D Line Impedance set for ESF
1 2 3 4 5 6
swdfe1es KLC 092799
Adding New Hardware to Avaya™ MCC1, SCC1, and G600 Media Gateways
3 4
120 ohms 120 ohms
ESF ESF
75 ohms 75 ohms
D4 D4
''Examples of typical settings'' on page 53
May 2003
5 6
120 ohms Enabled
ESF
75 ohms Disabled
D4
53.
for examples.
53