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1.3
Warnings
about
Firewalls
If
you
plan
on
using
remote
phones
or
a
3
to
your
firewall.
Many
popular
firewalls
and
routers
are
incompatible
or
unreliable
with
remote
rd
phones
and
3
party
VoIP
connections.
The
following
devices
may
not
be
SIP‐compliant;
Fonality
recommends
that
you
AVOID
using:
Microsoft
ISA
Router(s)
/
Firewall(s)
•
Linksys
/
Cisco
WRT54G
series
routers
•
Netgear
FVX538
•
Fonality
customers
report
great
success
with
the
following
firewall
devices:
Edgewater
Networks
EdgeMarc
4200
series
•
Fortinet
Fortigate
50
(remote
telecommuter)
•
Fortinet
Fortigate
60
(main
office)
•
Cisco
router
with
QoS
capability
(2600
series,
etc.)
•
Linksys
BEFSR81
(remote
telecommuter)
•
While
Fonality
recommends
the
above
devices,
we
*do
not*
support
them.
Please
contact
your
vendor
or
networking
specialist
for
assistance
configuring
the
device(s)
to
work
with
your
Fonality
Phone
System.
1.4
Firewall
Configuration
If
you
plan
to
provide
softphones
or
home
phones
to
telecommuters,
or
if
you
are
going
to
be
using
rd
a
3
party
VoIP
connection,
open
the
following
ports
on
your
firewall
ahead
of
time:
UDP
5060
(for
phone
registration)
•
UDP
10000‐20000
(for
audio
traffic)
•
TCP
6600
(for
remote
HUD)
•
If
you
have
a
hardware
or
software
VPN
solution
between
the
telecommuter's
location
and
your
main
office,
you
do
NOT
need
to
open
any
of
the
ports
above.
rd
party
VoIP
connection,
you
will
need
to
make
changes
6
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