Andrew ION-B Series, User Manual

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Although TPRF31 proves to be very fl exible, complex distribution systems usually can be better
served by rack-based ION-B Master Units: such ION-B installations are based on one or more
TPRN-subracks, thus exploiting the wide range of ION-B passive cards (TDPN, TMP, TBSI, TLCN2,
TLCN4, TLTN, TLDN), in order to build the passive network which best matches the costumer’s
needs.
Let’s see some examples of such rack-based confi gurations.
Firstly, assume that the BTSs are not duplexed. In this case, no TDPN module (see fi g. 2.14)
is required. Moreover, assuming that the Master Unit is made up of one or more subracks
located in a single site, we do not need an interconnect link in order to remotise a second
subrack. The scheme of this network confi guration is reported hereafter in fi gure 2.14.
Now let’s consider the same network confi guration, but with duplexed BTSs. In this case, some
TDPN modules (see fi g. 2.7) are required in order to combine UL and DL ports on single RF
channels. The scheme of this network confi guration is reported hereafter in fi gure 2.15.
If we need to expand our ION-B network to a wider area, please note that the Interconnect-
link option allows you to use a second subrack station at a distance of up to 20km from the
site where the main subrack station is located.
Please refer to the dedicated Interconnect link brochure (Table 2.3) for further details.