Hitachi GS4000 Series Installation Manual page 84

GS4000 Installation Guide Revision 4.00
(16) NP48-4S
The NP48-4S is a Network Interface providing 4 OC-48c POS interface ports.
*
Front View
The LED indicators are listed in Table 1.6-17
Figure 1.6-17 Front view of NP48-4S
LEDs
Table 1.6-17 LED Indications on the NP48-4S Front Panel
Name Color
STATUS Green/Yellow/Red
LINK : 0～3 Green/Yellow
R: 0～3 Green
T: 0～3 Green
U S2 Green
U S3 Green
D S2 Green
D S3 Green
1-66
NOTE: SFP is required when using NP48-4S. See the section 1.8 "GBIC, SFP, and
XFP" for information about SFP.
LEDs
Role
Shows the action
status of NIF.
Shows the action
status of an
interface line.
Shows the processing status of packets (for hardware debugging).
OC-48c POS Interface Port
Action status
Green (ON): operation possible.
Yellow (ON): locked out
Green (blinking): in preparation for startup
Red (ON): failure detected
OFF: NIF powered off（NIF exchangeable）
Green (ON): line operation possible（line is open）
Yellow (ON): failure detected
Yellow (blinking): network loopback being tested
OFF: Locked out.
Green (ON): frames being received
Green (ON): frames being sent
520-10-026-30X