Maintaining a Ceragon MHS Link
Chapter 12
FA4800 User Manual
Release 1.9.30
12-9
Figure 12-8: Secondary Link operating as the Hot Standby link
Notice that the active link notice is highlighted in red, so that there is no
mistaking which link is operational.
Maintaining a Ceragon MHS Link
IDU Replacement
There are two situations, which must be treated differently.
Situation 1:
To replace either of the IDUs at Site 1.4 or the IDU at Site 2.2, nothing spe-
cial is required. Simply disconnect the IDU to be replaced – and replace it
with a new one. Replacing a secondary link IDU obviously has no effect on
the TDM service. Disconnecting the Site 1.4 primary IDU activates Hot
Standby. After the Site 1.4 primary IDU is replaced, the Link will detect the
change and switch back to the primary link.
If you replaced the Site 2.2 IDU, remember to reconnect the MHS cable.
Situation 2:
Replacing the Site 1.2 IDU is different, and requires several steps.
