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CFIP PhoeniX C Series TDM/IP Split Mount System Technical Description and Configuration Guide
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Rev. 1.0
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© SAF Tehnika JSC 2013
Protection scheme is properly configured now. IP management access uses NAT functionality.
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Master unit at provider side is accessible directly at 192.168.3.201
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Slave unit at provider side is accessible at 192.168.3.201:1080
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Master unit at customer side is accessible at 192.168.3.201:1180
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Slave unit at customer side is accessible at 192.168.3.201:1280
The LAN 3 port on any other IDUs can be alternatively used for management access with the similar
NAT functionality (port 1080 for neighbour unit over FO, port 1180 for remote over air unit, port 1280
for remote diagonal over air unit).
The identical slave unit port configuration (port speed, port groups) and NAT configuration (NAT
records, static route) as at master unit can be helpful for quick reconfiguration from slave to master
mode, but it isn't required for normal protection function.
Example 8 – Basic 1+1 FD protection scheme
The 1+1 / FD (frequency diversity) protection mode protects against system HW failures (hitless
protects against ODU_Rx, ODU_Tx, IDU_RxAFE, IDU_TxAFE), by the same way it protects against
multipath fading. 1+1 / FD mode uses usually one antenna with OMT adapter, two ODUs are
connected into this adapter. Two transmitters are active in such protection schemes, two receivers
receive the same signal which is upconverted to different frequency. The master IDU decides what
stream will be used for final data demultiplexing.
The application example for 1+1 / FD mode is shown at the Figure 114.The configuration of the most
important GUI pages at LOCATION 1 (provider side) is shown at the figures 107 -113.
This concrete example describes application where PROTECTED design is selected on both link sides,
modulation is QAM128 in BW 30 MHz and appropriate maximal data speed is about 169 Mbps. The
management access is similar to Example 3 – Out-of-band MNG in separated channel described on
page 95. All data sources are connected into master unit (IDU 1, IDU 3), slave and master IDUs are
interconnected by means of fiber optic cable connected into ports SFP 1, the separate management is
also interconnected by means of Ethernet cable. The protection setting rules correspond with
appropriate explanation in chapter Basic port settings – Design PROTECTED on page 78.
Main Advantages
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The most universal protection scheme.
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Simple SW reconfiguration from master to slave IDU mode.
Disadvantages
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Two frequencies must be used.
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No protection against data interface part failure at master IDU.
