5
2.2 DESCRIPTION
The Patton 450RC24 G.703 Telco balun panel (see Figure 1) matches
24 sets of dual 75-ohm coax connections to 120-ohm Telco connections.
This function enables carriers to provide 120-ohm G.703 service to cus-
tomers retaining 75-ohm CPE hardware. It also enables carriers who
have standardized on 75-ohm coax to provide 120-ohm terminations to
their customers (in keeping with European ONP requirements).
Figure 1.
Model 450RC24
Supporting E1 data rates to 2.048 Mbps, the Patton 450RC24 panels bi-
directionally match signal impedance and pulse shapes according to the
CCITT G.703 standard. The Patton 450RC24 balun panels mount in a
standard 19-in. (48.3 cm) rack.
TX
RX
TX
RX
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
