Backplane Interfaces - Nortel Enterprise 1000 Reference Manual

Page 38 of 236 ITG Line 2.1 NTVQ55AA card

Backplane interfaces

553-3023-211 Standard 1.00 June 2001
NWK Status LED
NWK Status LEDs display the TLAN Ethernet activity.
• Green – on if the carrier (link pulse) is received from the TLAN Ethernet
hub.
• Yellow – flashes when there is TLAN data activity. During heavy traffic,
yellow can stay continuously lit.
Note: There are no Ethernet status LEDs for the ELAN management
interface.
PC Card slots
The ITGL 2.1 card has one faceplate PC card slot, designated drive A:. The
PC card slot is used for optional maintenance (backup and restore). The ITGL
2.1 card also has one unused inboard slot, designated drive B:. The PC Card
slots support PC based hard disks (ATA interface) or high-capacity PC flash
memory cards.
Maintenance Display
A four character, LED-based, dot matrix display shows the maintenance
status fault codes and other card state information.
RS-232 Maintenance Port
The ITGL 2.1 card faceplate provides a female DIN-8 serial maintenance port
connection (labeled Maint Port). An alternative connection to the faceplate
serial maintenance port exists on the NTMF94EA I/O panel breakout cable.
Do not connect maintenance terminals or modems to the faceplate and I/O
panel DB-9 male serial maintenance port at the same time.
The backplane connector provides
• ELAN
• TLAN
• alternate connection to the serial maintenance port DS-30X
• Card LAN interfaces