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S8100 Installation and Upgrades 269
November 2003
Cable pinouts
Set TN464GP T1/E1’s options
A
Set TN464GP T1/E1’s options
The TN464GP DS1/E1 interface – T1/E1 circuit pack interfaces between a 24- or 32-channel Central
Office/ISDN or tie trunk and the TDM bus.
Set the switches on the circuit pack to select bit rate and impedance match. See Table 39, Option-switch
settings on TN464GP, on page 269 and Figure 51, Option settings on TN464GP, on page 269. If the top
switch setting is set to 32 Channel, set the lower switch setting to either 120 Ohm or 75 Ohm.
. .
Figure 51: Option settings on TN464GP
Table 39: Option-switch settings on TN464GP
120 Ohms Twisted pair
75 Ohms Coaxial requiring 888B adapter
32 Channel 2.048 Mbps
24 Channel 1.544 Mbps
Figure notes
1 TN464GP
2 Option switch
3 24-/32-channel selector (24CH shown)
4 75-/120-Ohm selector (120 Ohms shown)
c
k
d
m4
6
4f KL
C
05
1
399
O
1
N
2
32CH 24CH
120 75
S
I
E
M
E
I
E
O
S
M
S
O
1
2
3
4
S
T
A
T
U
S
1
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