User's Manual

25MN024-010

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.