User guide

System Administrator’s Guide – Release 7.5
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Toll Free 1-866-ALLWORX • 585-421-3850 • www.allworx.com
Revised: April 9, 2013
Page 77
Using a maximum range of values
makes the phone the most secured
from snooping and denial of service
activities. However, when placing
remote phones behind 3rd-party
firewalls, under certain conditions the
UDP port range may need to be greatly
restricted so that mapping rules can be
created for each phone behind the
firewall. See Chapter
17, Remote
Allworx Phones and Port Expanders,
for more information.
SIP NAT Keep-
alive Interval
Some NAT firewalls automatically time
out and close connections to devices it
protects. If a remote phone is behind
such a firewall, then this setting
prevents the timeout. Messages called
keep-alive packets are sent from the
phone to the Allworx server at the
frequency specified. The value should
be set to an interval that is shorter than
the firewall timeout.
Yes No
SIP Port UDP port number used for the SIP
protocol by the phone. Use the default
value of 5060 unless the port expander
is behind a 3rd-party firewall and the
network requires a different value.
Yes Yes
Handset
Network
Template
Select a Handset Network Profile
Template to download to the handset.
Yes No
Network
Settings
Controls whether the handset will use
the selected Network Template or if it
should rely on the network settings
entered on the phone.
Yes No
Time Zone Specify the time zone for the handset to
compute the local time. Select Use
Current Server Setting if the telephone
is in the same time zone as the server.
For a remote phone, you may want to
use the time zone of its actual location.
Yes No
Unannounced
Transfer Mode
Choose whether unannounced (Blind)
transfers are completed immediately
after the phone number for the recipient
is dialed or if the person initiating the
transfer must hang up to complete the
transfer. Choosing “Immediate” will
result in unannounced (blind) transfer
behavior that was standard in server
software releases 7.3 and lower.
Requiring hang-up permits the person
initiating the transfer to hold on the line
Yes No