<s>
Calling	B-Application
party	I-Application
pays	I-Application
(	O
CPP	O
)	O
is	O
a	O
payment	O
model	O
in	O
telephony	O
,	O
especially	O
in	O
cellular	O
markets	O
,	O
that	O
states	O
that	O
the	O
total	O
cost	O
of	O
a	O
call	O
is	O
borne	O
by	O
the	O
caller	O
and	O
not	O
the	O
receiver	O
.	O
</s>
<s>
Bill	B-Application
and	I-Application
keep	I-Application
model	O
.	O
</s>
<s>
Thus	O
,	O
the	O
"	O
Calling	B-Application
party	I-Application
pays	I-Application
"	O
(	O
CPP	O
)	O
principle	O
combined	O
with	O
the	O
presence	O
of	O
a	O
strong	O
regulator	O
,	O
and	O
the	O
"	O
Receiving	O
party	O
pays	O
"	O
(	O
RPP	O
)	O
principle	O
,	O
are	O
deemed	O
to	O
eliminate	O
the	O
negative	O
effects	O
of	O
the	O
monopolistic	B-Application
market	O
for	O
termination	O
rates	O
.	O
</s>
