Allied Telesis AT-S99 - Manual (Page 38)

Chapter 2: AT-CM and AT-CV Media Converter Line Cards
38
Note
The maximum operating distances of the fiber optic ports assume
full-duplex operation. The distances are significantly less for half-
duplex mode.
The fiber optic ports on most of the line cards are standard Ethernet ports
that can be connected to other Fast Ethernet or Gigabit Ethernet devices
that have compatible fiber optic ports, including other media converters.
The operating specifications of the fiber optic ports can be found in the
Installation Guides that ship with the line cards.
Two of the line cards, however, have to be used in pairs because their
fiber optic ports function as multiplexers, combining two or more data
streams onto a single fiber strand to utilize more of the available
bandwidth of the fiber optic cable. One of the cards is the AT-CM212 Line
Card. It has a simplex SC fiber optic port that combines both the send and
receive data streams of the Ethernet traffic onto a single strand of single-
mode fiber cable. As shown in Table 1 on page 37, this card has an A
version and a B version. The fiber optic port on the version A card has to
be connected to the fiber optic port on the version B card.
The AT-CM70S Line Card also has to be used in pairs. It combines the
traffic from one 10/100Base-T Ethernet port and four T1/E1 ports onto a
single fiber optic port on an SFP transceiver. But unlike the AT-CM212
Line Card, this card does not have two versions.
The AT-CM Line Cards use the AT-S73 Management Software, which
comes preinstalled on the line cards with default settings for all of the
operating parameters. You do not have direct access to this software. To
configure these cards, you have to use the AT-CV5M02 Management
Card, which passes your changes to the line cards through the chassis’
backplane.
AT-CM70S
SFP
1 Varies by SFP
transceiver Varies by SFP
transceiver 1.25 Gbps Varies by SFP
transceiver
Twisted pair RJ-45 Twisted-pair 10 Mbps or
100 Mbps 100 meters
(328 feet)
T1/E1
2 RJ-48 Twisted-pair n/a n/a
RS-232
Console Mini-DIN RS-232 Serial n/a n/a
1. SFP transceiver sold separately.
2. Four T1/E1 ports.
Table 1. AT-CM Media Converter Line Cards
Line Card
Type of
Port/Slot
Connector Cable Speed
Maximum
Distance