<s>
Optimum	O
offers	O
landline	O
VOIP	B-Application
telephone	O
service	O
branded	O
as	O
Optimum	B-Protocol
Voice	I-Protocol
;	O
the	O
service	O
utilizes	O
a	O
telephone	O
cable	O
modem	O
to	O
provide	O
the	O
service	O
,	O
either	O
alone	O
or	O
combined	O
into	O
a	O
household	O
's	O
main	O
cable	O
modem	O
box	O
.	O
</s>
<s>
By	O
2004	O
the	O
name	O
Optimum	B-Protocol
Voice	I-Protocol
was	O
used	O
to	O
offer	O
"	O
a	O
new	O
phone	O
service	O
"	O
based	O
on	O
cable-modem	O
technology	O
.	O
</s>
<s>
Although	O
references	O
such	O
as	O
"	O
Cablevision	O
's	O
Optimum	O
"	O
do	O
not	O
include	O
the	O
Altice	O
name	O
,	O
both	O
names	O
reflect	O
major	O
market	O
share	O
:	O
one	O
study	O
showed	O
Optimum	B-Protocol
Voice	I-Protocol
as	O
the	O
eight-largest	O
phone	O
service	O
provider	O
in	O
the	O
U.S.	O
</s>
