Foundry Networks Switch and Router Installation And Configuration Manual page 195

The <threshold> parameter is the bit error rate from 3 – 9. For all alarms except sf-ber, the default is 6 (10e-6).
For the sf-ber alarm, the default is 3 (10e-3).
Displaying POS APS Information
To display information about a POS APS configuration, use the show aps command. For example:
BigIron# show aps
POS2/1 working group 1 channel 1 Enabled Selected
Syntax: show aps
In this example, the output indicates that POS interface 2/1 is the working interface for channel 1 in APS group 1,
and the interface is active. If there is a tilde next to Selected (for example, ~Selected) it means the interface is
not active.
Foundry POS Interface Specifications
Transceiver
OC-3c POS interfaces
Single-mode short-reach
Single-mode intermediate-reach
Multimode
OC-12c POS interfaces
Single-mode long-reach
Single-mode Intermediate-reach
Multimode short-reach
OC-48c POS interfaces
Single-mode short-reach
a.If the transceiver part number for the OC-12c POS module is HFCT-5208B (before May 2000), the
maximum distance is 15 Km, not 40 Km.
NOTE: The OC-12c specification is the same, regardless of whether it is configured for 622 Mbps or 155 Mbps.
December 2000
Table 6.5: POS Specifications
Power Launch Transmit Power
Budget Window
13 dB 1270 to -28 to -8 dBm
1380 nm
29 dB 1280 to -5 to 0 dBm
1335 nm
11.5 dB 1270 to -18 to -14 dBm
1380 nm
25 dBm 1280 to -3 to 2 dBm
1335 nm
13 dBm 1274 to -15 to -8 dBm
1356 nm
6 dBm 1270 to -20 to -14 dBm
1380 nm
14.5 dB 1260 to -6.5 dBm
1580 nm
Using Packet Over SONET (POS) Modules
Receive
Power
-31 to -8 dBm
-34 to -8 dBm
-30 to -14
dBm
-28 to -8 dBm
-28 to -7 dBm
-26 to -14
dBm
-21 dBm
Maximum
Distance
9.75 miles
(15 Km)
26 miles
(40 Km)
1.3 miles
(2 Km)
65 miles
(100 Km)
9.32 miles
a
(40 Km)
1640ft.
(500 m)
9.75 miles
(15 Km)
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