Ericsson SmartEdge 600, Руководство по оборудованию

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Card Descriptions
Table 89 Facility LEDs on 8-Port ATM OC-3c/STM-1c Card
Label Activity Color Description
On Green Signal is present and within specifications.
Blinking Green Signal is present and within specifications; receiving or transmitting packets
(not idle cells).
LINK
Off None Port is not configured, no signal is present, or signal is not within specifications.
On Yellow Local port is in an alarm state, such as a loss of frame (LOF). LOC
Off None Local port is in a normal state.
On Yellow Remote port cannot obtain synchronization or has a defect or failure, such
as an alarm indication signal (AIS). REM
Off None Remote port is in a normal state.
6.3 4-Port ATM OC-3c/STM-1c Card
The 4-port ATM OC-3c/STM-1c Intermediate (IR) card is referred to as a
second-generation ATM OC-3c/STM1-1c card and is a low-density version
which provides two ports that are enabled through software entitlement. This
card has increased memory for each port and offers higher performance and
support for more ATM virtual paths (VPs) and PVCs than an earlier version of
the card. The SAR devices support two, four, or eight distinct CoS queues
for each ATM PVC, allowing a mix of priority- and class-based queuing for
each ATM PVC. For information about ATM VPs and PVC support, see related
documentation at https://ebusiness.ericsson.net.
The card uses two SAR devices, which perform the reassembly function on
the incoming ATM cell stream from the physical device and the segmentation
function to create the corresponding outgoing ATM cell stream.
The hardware provides HEC framing for each port; the transmit clock can be
derived either from the active controller card or from the onboard local oscillator.
This card is the same size as all other SmartEdge line cards and occupies
a single slot in the chassis.
Table 90 4-Port ATM OC-3c/STM-1c IR Card Specifications
Specification IR
General
Number of ports
(1)
4 or 2 (low-density version)
Speed 155 Mbps
Protection 1+1 APS—Bidirectional or unidirectional; revertive or
nonrevertive switching
Interface Telcordia IR-1, SDH/STM-1 S-1.1
Link power budget
(2)
12 dB
Nominal wavelength
1310 nm
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