Hardware Installation
28
Models 2603, 2621, and 2635 User Manual
3
• Initial Configuration
impedances of 100-ohms for T1 and 120-ohms for E1 lines (see
figure 5
). The 2603/K also comes with dual
BNC for alternate connection to unbalanced 75-ohm E1 lines (see
figure 6
on page 29).
CAUTION
The interconnecting cables shall be acceptable for external use
and shall be rated for the proper application with respect to volt-
age, current, anticipated temperature, flammability, and
mechanical serviceability.
C ro
ssov
e r
10
/10
0
E th
e rn
e t
W
A N
MDI-X
Crossover
10/100
Ethernet
WA N
Powe r
P o
we
r
MD
I-X
WAN connector
(RJ-48C)
Ethernet connector
(RJ-45)
Figure 4. Rear View of the 2603/T showing location of Ethernet and WAN connectors
1 2 3 4 5 6 7 8
RX RX
TX TX
Figure 5. RJ-48C pin-out diagram
