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PA-E3 Receptacles and Cables
PA-E3 Serial Port Adapter Installation and Configuration
1-4
The two-port PA-2E3 port adapter has one status LED and six uplink port status LEDs (RCLK,
FERF, OOF, AIS, RL, and LL) for each serial E3 port. (See Figure 1-4.)
Figure 1-4 Two-Port PA-2E3 Port Adapter LEDs—Partial Front View Shown
After system initialization, the ENABLED LED goes on, indicating that the port adapter has been
enabled for operation.
The following conditions must be met before the PA-E3 port adapter is enabled:
• The port adapter contains a valid microcode version that has been downloaded successfully.
• For Cisco 7000 and 7500 series routers, the port adapter is correctly connected to the VIP2 and
the midplane and is receiving power in the Cisco router.
• For the Catalyst 5000 family switches, the port adapter is correctly connected to the
Catalyst RSM/VIP2 and is receiving power in the switch.
• The bus recognizes the port adapter.
If any of these conditions are not met, or if the initialization fails for other reasons, the ENABLED
LED does not go on.
Table 1-1 describes the PA-E3 LEDs.
Table 1-1 PA-E3 Port Adapter LEDs
PA-E3 Receptacles and Cables
The serial interface cable for the PA-E3, which is a 75-ohm coaxial cable, is used to connect your
router to a serial E3 network. Serial cables conform to EIA/TIA-612 and EIA/TIA-613
specifications. The serial ports on the PA-E3 are considered to be DTE devices.
Name Color State Description
ENABLED Green On Indicates that the port adapter is ready.
Uplink port status
RCLK Green On Indicates that a receive clock has been detected.
FERF Yellow On Indicates that Framer detected Far End Receive
Failure.
OOF Yellow On Indicates that Framer detected Out of Frame.
AIS Yellow On Indicates that Framer detected Alarm Indication
Signal.
RL Yellow On Indicates that port is in remote loopback mode.
LL Yellow On Indicates that port is in local loopback mode.
ENABLED
RCVR
XMTR
RCLK
AIS
FERF
RL
RCLK
FERF
RL
OOF
LL
AIS
OOF
LL
2E3 SERIAL
H10049
LEDs