USER’S MANUAL
Section 7: ISDN BASICS 140
Zephyr Xstream ISDN Compatibility
Protocols
The
Telco
network
and
the
Zephyr
Xstream
communicate
via
a
‘protocol’
–
the
language
the
user
equipment
and
the
telephone
network
use
to
converse
(on
the
D
channel)
for
setting
up
calls
and
the
like.
This
is
where
there
are
differences
depending
upon
the
central
office
equipment
used
on
the
line
and
the
standards
which
are
supported
by
that
particular
equipment.
While
each
type
will
work
with
the
Zephyr
Xstream,
the
differences
need
to
be
taken
into
account
when
lines
are
ordered
and
the
Zephyr
Xstream
set
up.
In
the
USA,
telephone
companies
use
either
AT&T/Lucent
5ESS,
Northern
Telecom/Nortel
DMS
‐
100,
or
Siemens
EWSD
switches.
Each
of
these
can
support
the
National
ISDN
1
(NI
‐
1)
protocol
standard,
which
has
been
specified
by
Bellcore,
the
technical
lab
that
was
jointly
owned
by
the
phone
companies.
However,
both
AT&T
and
Northern
Telecom
had
“custom”
versions
of
ISDN
which
pre
‐
date
the
NI
‐
1
standard
and
a
few
switches
have
not
been
upgraded
to
the
newer
NI
‐
1
standard.
t
CURIOSITY NOTE!
There is also a newer National ISDN-2 (NI-2) standard, but it designed to be compatible with
NI-1 for all of the basic functions.
In
Europe
(as
well
as
much
of
the
rest
of
the
world),
the
common
standard
is
Euro
‐
ISDN,
following
the
ETS
300
standards.
It
is
an
(apparently
successful!)
attempt
for
all
of
the
European
telephone
networks
to
use
a
single,
compatible
protocol.
In
Japan,
the
protocol
used
is
called
INS64.
Summary of Contents for Zephyr Xstream
Page 2: ......
Page 26: ...USER S MANUAL Section 1 QUICK RESULTS 14...
Page 30: ...USER S MANUAL Section 2 INTRODUCTION Getting to Know the Zephyr Xstream 18...
Page 70: ...USER S MANUAL Section 3 GUIDED TOUR of the HARDWARE 58...
Page 144: ...USER S MANUAL Section 6 AUDIO CODING REFERENCE 132...
Page 164: ...USER S MANUAL Section 8 LIVEWIRETM IP Audio 152...
Page 310: ...USER S MANUAL Appendix 1 Codec Interoperability Information 298...
Page 320: ...USER S MANUAL Appendix 3 ISDN Cause Phrases Values 308...
Page 324: ...USER S MANUAL Appendix 4 Known Working SPID Formats by Telco 312...
Page 356: ...USER S MANUAL Appendix 9 Modular Cable Guide 344...
