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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16 Card Reference
16.8.3 TXP_MR_2.5G and TXPP_MR_2.5G Cards
Note
If you create a GCC on either card of the protect group, the trunk (span) port stays permanently active,
regardless of the switch state. When you provision a GCC, you are provisioning unprotected overhead
bytes. The GCC is not protected by the protect group.
16.8.3.4 Splitter Protection
For the TXPP_MR_2.5G card, protection is done using splitter protection. In splitter protection, the
single client signal is injected into the client Rx port. It is then split into two separate signals on the two
trunk Tx ports. The two signals are transmitted over diverse paths. The far-end TXPP_MR_2.5G card
chooses one of the two trunk Rx port signals and injects it into the Tx client port. The TXPP_MR_2.5G
card switches the selected trunk Rx port signal in case of failure. See the
Muxponder Protection” section on page 16-114
for more details.
16.8.3.5 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is
compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off
pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For ALS
provisioning information, see the
“DLP-G230 Change Line Settings for TXP_MR_2.5G and
TXPP_MR_2.5G Cards” section on page 5-50
.
16.8.3.6 TXP_MR_2.5G and TXPP_MR_2.5G Safety Labels
The TXP_MR_2.5G and TXPP_MR_2.5G cards have several safety labels that provide laser radiation
and electrical shock warnings.
shows the laser radiation warning hazard level label. The faceplate of these cards are
clearly labeled with warnings about the equipment radiation level. Personnel must understand all
warning labels before working with these cards. The hazard level label warns the personnel against
exposure to laser radiation of Class 1M limits calculated in accordance with IEC60825-1 Ed.1.2.
Figure 16-58
Laser Radiation Warning—Hazard Level Label
shows the laser source connector label. This label indicates a laser source at the optical
connectors where it has been placed.
HAZARD
LEVEL 1
65542
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