30
IBM 8265: Product Description
622Mbps Modules
There are two types of single port OC12 (formally known as STS12C or STM-4c)
modules available for the 8265:
•
Feature Code 6511, for multimode fiber.
•
Feature Code 6512, for singlemode fiber.
The modules have the following characteristics:
•
One port operating at up to 622Mbps (non-blocking) to:
– connect to high capacity workstations and servers that function in ATM mode
and support the SONET lite (LAN) standard servers and other switches or
hubs.
– exchange data with other ATM subsystems.
•
Physical interface: optical fiber.
•
Connections up to:
– 500 m (1640 ft) using multimode fiber cable
– 15 km (9.32 miles) using singlemode fiber cable.
The maximum length of connection depends on the type of cabling used.
•
Up to fourteen 622Mbps modules can be used in the 8265 switch.
The modules may be installed or removed from the switch (hot-pluggable) without
disturbing data traffic on other ATM modules.
For further information, refer to page 55.
Figure 9 on page 31 shows the faceplate of the 622Mbps module.
Table 9. Maximum Distances for Valid ATM Connections
Module Type
Fiber Type
MMF
50/125 micron
MMF
62.5/125 micron
SMF
9/125 micron
Multimode (A1-MF622)
500 m
1
800 m
—
Singlemode (A1-SF622)
3.1 km
2
2.9 km
2
15 km
Notes:
1. The A1-MF622 module may be connected to an existing 50/125 micron fiber base,
however this is not recommended when setting up a new fiber base.
2. The A1-SF622 singlemode fiber module may be connected to multimode fiber
cabling.
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