<s>
The	O
iNum	B-Protocol
(	O
international	O
number	O
)	O
initiative	O
was	O
a	O
project	O
by	O
Voxbone	O
to	O
create	O
a	O
global	O
dial	O
code	O
for	O
Voice	B-Application
over	I-Application
IP	I-Application
communications	O
.	O
</s>
<s>
Voxbone	O
is	O
a	O
Belgian	O
company	O
specializing	O
in	O
wholesale	O
telephone	O
numbers	O
for	O
VoIP	B-Application
applications	O
.	O
</s>
<s>
The	O
International	O
Telecommunication	O
Union	O
(	O
ITU	O
)	O
allocated	O
a	O
portion	O
of	O
the	O
non-geographic	O
"	O
country	B-General_Concept
code	I-General_Concept
"	O
+883	B-General_Concept
to	O
this	O
initiative	O
.	O
</s>
<s>
Specifically	O
,	O
iNums	B-Protocol
were	O
telephone	O
numbers	O
in	O
the	O
format	O
+883	B-General_Concept
5100	O
xxxxxxxx	O
.	O
</s>
<s>
Many	O
providers	O
offered	O
iNum	B-Protocol
numbers	O
and	O
calls	O
between	O
them	O
at	O
no	O
cost	O
to	O
their	O
customers	O
,	O
but	O
some	O
charged	O
for	O
the	O
service	O
.	O
</s>
<s>
The	O
iNum	B-Protocol
networking	O
was	O
based	O
on	O
SIP	B-Application
standards	O
and	O
supported	O
voice	O
,	O
video	O
and	O
SMS	B-Device
.	O
</s>
<s>
Transcoding	B-Algorithm
was	O
available	O
between	O
G.711	O
and	O
G.729	O
.	O
</s>
<s>
Video	B-Application
codecs	I-Application
supported	O
were	O
H.263	O
+	O
and	O
H.264	O
,	O
but	O
theoretically	O
any	O
codec	B-General_Concept
,	O
including	O
Skype	B-Application
's	O
SILK	O
and	O
G.722	B-Algorithm
,	O
for	O
high-definition	O
voice	O
,	O
could	O
be	O
supported	O
as	O
long	O
as	O
the	O
originating	O
and	O
terminating	O
networks	O
both	O
supported	O
it	O
and	O
transcoding	B-Algorithm
was	O
not	O
required	O
.	O
</s>
<s>
Approximately	O
400	O
organizations	O
were	O
allocated	O
iNum	B-Protocol
ranges	O
.	O
</s>
<s>
Popular	O
VoIP	B-Application
providers	O
offering	O
iNum	B-Protocol
numbers	O
to	O
the	O
general	O
public	O
included	O
Callcentric	O
,	O
ippi	O
,	O
Localphone	O
and	O
VoIP.ms	O
.	O
</s>
<s>
While	O
+883	B-General_Concept
is	O
a	O
valid	O
ITU	O
dial	O
code	O
,	O
not	O
all	O
telephone	O
carriers	O
could	O
route	O
the	O
calls	O
correctly	O
.	O
</s>
<s>
Skype	B-Application
,	O
Belgacom	O
,	O
British	O
Telecom	O
,	O
Colt	O
,	O
Google	B-Application
Voice	I-Application
,	O
KPN	O
,	O
Orange	O
Switzerland	O
,	O
Sprint	O
USA	O
and	O
Verizon	O
Europe	O
were	O
among	O
the	O
large	O
communications	O
companies	O
that	O
routed	O
voice	O
calls	O
to	O
iNum	B-Protocol
.	O
</s>
<s>
SMS	B-Device
to	O
iNum	B-Protocol
was	O
supported	O
by	O
several	O
agreements	O
with	O
international	O
messaging	O
providers	O
.	O
</s>
<s>
It	O
was	O
also	O
possible	O
to	O
call	O
iNums	B-Protocol
through	O
access	O
numbers	O
in	O
many	O
countries	O
and	O
cities	O
,	O
so	O
callers	O
could	O
make	O
local	O
calls	O
to	O
iNum	B-Protocol
when	O
their	O
local	O
carrier	O
did	O
not	O
support	O
routing	O
.	O
</s>
<s>
The	O
caller	O
would	O
dial	O
the	O
local	O
access	O
number	O
,	O
then	O
after	O
the	O
automated	O
greeting	O
dial	O
the	O
desired	O
iNum	B-Protocol
.	O
</s>
<s>
In	O
addition	O
,	O
iNums	B-Protocol
could	O
be	O
called	O
through	O
VoIP	B-Application
methods	O
such	O
as	O
ENUM	B-Language
(	O
RIPE	O
e164.arpa	O
)	O
and	O
SIP	B-Protocol
URI	I-Protocol
(	O
format	O
8835100xxxxxxxx@sip.inum.net	O
)	O
.	O
</s>
<s>
Country	B-General_Concept
code	I-General_Concept
+888	O
was	O
allocated	O
for	O
the	O
United	O
Nations	O
Office	O
for	O
the	O
Coordination	O
of	O
Humanitarian	O
Affairs	O
(	O
OCHA	O
)	O
international	O
disaster	O
response	O
and	O
implemented	O
using	O
the	O
iNum	B-Protocol
platform	O
.	O
</s>
<s>
Voxbone	O
offered	O
free	O
SIP	B-Application
termination	O
to	O
all	O
service	O
providers	O
who	O
offered	O
it	O
to	O
their	O
customers	O
at	O
or	O
below	O
the	O
cost	O
of	O
a	O
local	O
call	O
,	O
leading	O
many	O
providers	O
to	O
offer	O
the	O
service	O
at	O
no	O
cost	O
.	O
</s>
<s>
For	O
example	O
,	O
Callcentric	O
and	O
ippi	O
offered	O
free	O
iNum	B-Protocol
numbers	O
and	O
calls	O
to	O
any	O
customer	O
,	O
and	O
VoIP.ms	O
offered	O
them	O
at	O
no	O
additional	O
cost	O
to	O
existing	O
customers	O
.	O
</s>
<s>
Localphone	O
initially	O
offered	O
free	O
iNum	B-Protocol
numbers	O
,	O
later	O
charging	O
$0.25	O
per	O
month	O
from	O
July	O
2018	O
,	O
but	O
calls	O
were	O
always	O
free	O
.	O
</s>
<s>
Google	B-Application
Voice	I-Application
began	O
supporting	O
calls	O
to	O
iNum	B-Protocol
in	O
2012	O
,	O
initially	O
at	O
no	O
cost	O
,	O
but	O
in	O
2013	O
it	O
set	O
a	O
rate	O
of	O
$0.03	O
per	O
minute	O
.	O
</s>
<s>
After	O
initial	O
interest	O
by	O
many	O
VoIP	B-Application
providers	O
,	O
adoption	O
was	O
slow	O
.	O
</s>
<s>
Most	O
providers	O
did	O
not	O
support	O
iNum	B-Protocol
calls	O
at	O
all	O
,	O
and	O
some	O
of	O
those	O
that	O
supported	O
such	O
calls	O
charged	O
for	O
them	O
,	O
undermining	O
the	O
value	O
of	O
the	O
project	O
.	O
</s>
<s>
The	O
iNum	B-Protocol
blog	O
had	O
no	O
new	O
posts	O
after	O
April	O
2015	O
,	O
and	O
in	O
July	O
2019	O
the	O
whole	O
iNum	B-Protocol
website	O
was	O
redirected	O
to	O
the	O
Voxbone	O
website	O
,	O
which	O
no	O
longer	O
mentioned	O
the	O
project	O
.	O
</s>
<s>
Callcentric	O
,	O
one	O
of	O
the	O
initial	O
supporters	O
,	O
reluctantly	O
discontinued	O
its	O
iNum	B-Protocol
service	O
in	O
November	O
2019	O
due	O
to	O
incompatibility	O
after	O
an	O
equipment	O
upgrade	O
.	O
</s>
<s>
Calls	O
to	O
iNum	B-Protocol
may	O
still	O
connect	O
internally	O
within	O
the	O
same	O
provider	O
,	O
but	O
not	O
between	O
providers	O
.	O
</s>
