<s>
The	O
Bearer-Independent	B-Protocol
Call	I-Protocol
Control	I-Protocol
(	O
BICC	O
)	O
is	O
a	O
signaling	O
protocol	O
based	O
on	O
N-ISUP	O
that	O
is	O
used	O
for	O
supporting	O
narrowband	O
Integrated	B-Protocol
Services	I-Protocol
Digital	I-Protocol
Network	I-Protocol
(	O
ISDN	B-Protocol
)	O
service	O
over	O
a	O
broadband	O
backbone	O
network	O
.	O
</s>
<s>
BICC	O
signaling	O
messages	O
are	O
nearly	O
identical	O
to	O
those	O
in	O
ISDN	B-Protocol
User	I-Protocol
Part	I-Protocol
(	O
ISUP	O
)	O
;	O
the	O
main	O
difference	O
being	O
that	O
the	O
narrowband	O
circuit	O
identification	O
code	O
(	O
CIC	O
)	O
has	O
been	O
modified	O
.	O
</s>
<s>
Transport	O
links	O
are	O
most	O
commonly	O
Asynchronous	O
Transfer	O
Mode	O
(	O
ATM	O
)	O
or	O
Internet	B-Protocol
Protocol	I-Protocol
(	O
IP	O
)	O
.	O
</s>
<s>
The	O
Third-Generation	O
Partnership	O
Project	O
(	O
3GPP	O
)	O
has	O
included	O
BICC	O
CS	O
2	O
in	O
the	O
Universal	B-Protocol
Mobile	I-Protocol
Telecommunications	I-Protocol
System	I-Protocol
(	O
UMTS	B-Protocol
)	O
release	O
4	O
.	O
</s>
