Transition Networks Gigabit Ethernet Stand-Alone Media Converter SGETF1018-105 User Manual

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Transition Networks, Inc.
6475 City West Parkway
Minneapolis, MN  55344 USA
tel 952.941.7600 or 800.526.9267
fax 952.941.2322
©2005 Transition Networks, Inc.
All trademarks are the property of their respective owners.
Technical information is subject to change without notice.
Transition Networks's converters will automatically re-establish link in all network
Transition Networks's converters will automatically re-establish link when connected to
switches if link was lost. With other manufacturers' converters the user must reset the
converter to re-establish the link.
Automatic Link Restoration allows the users to continue using Auto-Negotiation with
Link Loss Notification features. With other manufacturers' converters the user must
disable Auto-Negotiation and hard set the link.
Automatic Link Restoration on Transition Networks's products allows users to continue
using Link Loss Notification feature activated in both directions. Many competitive
solutions allow for Link Loss Notification activation only in one direction. If Link Loss
feature is activated in both directions, competitive products are put in a "deadly
embrace" and they cannot restore the link without resetting the converters.

No need to reset devices

Auto-Negotiation Enabled

Link Pass Through Activated in both directions
PAUSE signaling is an IEEE feature that
temporarily suspends data transmission
between two devices in the event that
one of the devices becomes
overwhelmed. In the event that a device
needs some time to clear network
congestion, it will send out a PAUSE
signal to the other end device, which
will then wait a pre-determined amount
of time before re-transmitting the data.
Transition's converters will pass PAUSE
signaling unhindered; ensuring that the
message is delivered to the end device.
PAUSE signaling is not standardized
over fiber media. Transition's media
converters will communicate this
signaling over fiber between the
converters to pass this signaling on to
the other end device.

(IEEE 802.3xy)

PAUSE enabled devices allowed to
work properly

Prevents loss of valuable data

Reduces bottlenecks and allows
for efficient use of network devices

Automatic Link Restoration
Single fiber technology offers a 50% savings in fiber utilization. It is an attractive
solution to maximize the usage of a limited number of fiber runs.
In a traditional optical link, a fiber pair consists of two uni-directional strands. The
single fiber technology multiplexes two optical wavelengths of 1310nm and 1550nm
into a single strand fiber. In a single fiber media converter each wavelength is
responsible for either the transmit or receive function. Consequently, the bi-directional
transmission is achieved by using a single strand. The converters in a single fiber
scenario "match" each other's wavelengths. Converter A transmits at the wavelength of
1310nm and receives at 1550nm while the other converter transmits at 1550nm and
receives at 1310nm. Therefore, converters are usually used in pairs.
Single Fiber
Single fiber technology is available on all
Transition Networks Media Converters in
maximum distance ranges from 20 to 80km.

Single Fiber