Alcatel-Lucent 9500 MXC, User Manual, Page: 400 / 916

Chapter 7. Node and Terminal Plug-ins
Vol. IV-7-10 Alcatel-Lucent
Procedure :
1. From the Plug-ins screen, select the required module.
• For a protected Node link, two RACs are displayed within one Link or Ring
module. RACs are labelled primary and secondary for a hot standby or
diversity link, or east and west for a ring configuration.
Upgrading a 3.3 link to 4.0:
After upgrading one end to 4.0, the upgraded end will continue to use the
Legacy modem profile (as above).
After upgrading the other end to 4.0, the upgraded link uses the Legacy modem
profile until NMS communications is established, whereupon the terminals
auto-negotiate to switch the modem profile from Legacy to Standard. Both ends
must have Auto confirmed as their Configured Modem profile
Repairing a link running 3.3 on one end and 3.4 to 3.7 on the other:
Normal co-channel operation is not possible if one end is operating with 3.3
SW or earlier, and the other with 3.4, 3.5, 3.6, or 3.7.
To restore operation, first one end of the link is upgraded to 4.0. Note that it
will continue to use the same Current Modem Profile it was previously
using.
• If the 3.3 end is upgraded the link will remain non-operational as the
retained modem profile is Legacy, but by manually setting the Configured
Modem Profile of the upgraded end to match the Standard profile required
by the other (3.4 to 3.7) end, a link is established and it will commence
carrying traffic.
• If the 3.4 to 3.7 end is upgraded the link will remain non-operational as
the retained modem profile is Standard, but by manually setting the
Configured Modem Profile of the upgraded end to match the Legacy
profile required by the 3.3 end, a link will be established.
• With both ends upgraded to 4.0 or later, and with their Configured Modem
Profiles set to Auto, both ends will auto-negotiate to confirm Standard as
their Current Modem Profile.
With 4.0 SW software installed, the Supported Remote Profiles are those
detected as being supported at the remote end of the link.
If the remote end has 4.0 SW, the Supported Remote Profiles will indicate
Standard and Legacy.
If the remote end has 3.3 SW or earlier, it will indicate Legacy.
If the remote end has 3.4 to 3.7 SW, it will indicate Standard.
Protected RAC 40 operation is essentially the same as for non-protected, but
where a conflict occurs, the decision falls in favour of the Standard modem
profile. These conflicts are only likely to occur after reconfiguration of INU/
INUe slots from existing links to new links.
Both RACs will always use the same modem profile. If either RAC is forced to
use Standard or Legacy, then both RACs are forced to that modem profile.
If one is forced to Standard and the other to Legacy, then both will use the
Standard modem profile.
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