Specifications

Overview 1-7
Receptacles, Cables, and Pinouts
Figure 1-10 LEDs on the PA-H HSSI Port Adapter—Partial Front View
After system initialization, the enabled LED, which is present on all interface processors, goes on to
indicate that the port adapter has been enabled for operation.
The following conditions must be met before the PA-H is enabled:
• The port adapter contains a valid microcode version that has successfully been downloaded
• The port adapter is correctly connected to the backplane and receiving power in Cisco 7000
series and Cisco 7500 series routers, or to the midplane and receiving power in Cisco 7100 series
routers Cisco 7200 series routers and Cisco uBR7200 series routers
• The bus recognizes the port adapter or PA-H-equipped VIP2
If any of these conditions is not met, or if the initialization fails for other reasons, the enabled LED
does not go on.
Table 1-1 PA-H Port LEDs
Receptacles, Cables, and Pinouts
Two types of cables are available for use with the PA-H HSSI port adapter: the HSSI interface cable
used to connect your router to an external DSU (and HSSI network) and a null modem cable, which
allows you to connect two routers back to back. Both HSSI cables conform to EIA/TIA-612 and
EIA/TIA-613 specifications. The HSSI port on the PA-H is considered to be a DTE device.
LED Label Color State Function
TD Green On DTE—Transmit data out.
DCE—Transmit data in.
TC Green On DTE—Transmit clock in.
DCE—Transmit clock in (TXCE).
RD Green On DTE—Receive data in.
DCE—Receive data out.
RC Green On DTE—Receive clock in.
DCE—Receive clock out.
LB/CD Green On Indicates DTR, DSR, RTS, CTS, or DCD is active.
Green Flashing Indicates RTS, CTS, or DCD is sending and receiving
data in half-duplex mode.
Yellow On Indicates local loop or internal loop active.
ENABLED
H10420
TD TC RD RC LB/C
0
1