Datasheet

3-18
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 3 Electrical Cards
3.10 FMEC E1-120NP Card
Use Table 3-9 to make the connection from the E-1 37-pin DB connector for Ports 8 to 14 to the external
balanced 120-ohm E-1 interfaces.
3.10 FMEC E1-120NP Card
Note For FMEC E1-120NP specifications, see the “A.5.9 FMEC E1-120NP Specifications” section on
page A-21.
The ONS 15454 SDH FMEC E1-120NP card provides front mount electrical connection for
42 ITU-compliant, G.703 E-1 ports. With the FMEC E1-120NP card, each E1-42 port operates at
2.048 mbps over a 120-ohm balanced interface. Twenty-one interfaces are led through one common
Molex 96-pin LFH connector. Figure 3-9 shows the FMEC E1-120NP faceplate and block diagram.
18 TX 1 N 37 GND
19 GND — —
Table 3-8 E-1 Interface Pinouts on the FMEC-DS1/E1 Card Ports 1 to 7 (continued)
Pin No. Signal Name Pin No. Signal Name
Table 3-9 E-1 Interface Pinouts on the FMEC-DS1/E1 Card Ports 8 to 14
Pin No. Signal Name Pin No. Signal Name
1GND 20RX 14 P
2 TX 14 P 21 RX 14 N
3 TX 14 N 22 GND
4 TX 13 P 23 RX 13 P
5 TX 13 N 24 RX 13 N
6GND 25RX 12 P
7 TX 12 P 26 RX 12 N
8 TX 12 N 27 GND
9 TX 11 P 28 RX 11 P
10 TX 11 N 29 RX 11 N
11 GND 30 RX 10 P
12 TX 10 P 31 RX 10 N
13 TX 10 N 32 GND
14 TX 9 P 33 RX 9 P
15 TX 9 N 34 RX 9 N
16 GND 35 RX 8 P
17 TX 8 P 36 RX 8 N
18 TX 8 N 37 GND
19 GND — —