User`s guide

System Administrator’s Guide – Release 7.2.3.x
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Revised: September 1, 2010
Page 44
Redial Memory – Sets the length of time the redial memory persists in the phone station. This setting is useful
to adjust to maintain privacy on phones that are used in shared areas.
RTP Media Port Range
– This parameter specifies the range of UDP ports used for Real Time Packet
communications. Using a maximum range of values makes the phone the most secured from snooping and
denial of service activities. However, when remote phones are placed behind 3
rd
-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 14, Remote Allworx Phones, for more information
SIP NAT Keep-alive Interval
– Some NAT firewalls will 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.
SIP Port
– This is the UDP port number used for the SIP protocol by the phone. The default value of 5060
should be used unless the port expander is behind a 3
rd
-party firewall and the network requires a different
value.
Time Zone
– Specifies the time zone that the handset uses to compute its 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.
Checkbox parameters
Audible Dialing
– When enabled, DTMF sounds are heard on the handset or speaker when dialing the phone.
When disabled, dialing operations are silent.
Auto On Hold
– When one call is active on the phone and another call comes in (with a free Call/Line
Appearance PFK), if the PFK for the new call is pressed, the first call is automatically put on hold instead of
terminated.
Auto Retrieve Calls
– When the phone is on the hook and a call is on hold, then when the phone is taken off
hook, the call on hold is automatically retrieved. When this is not enabled, the phone gets an open line (if
available) when taken off-hook.
Call Supervision
– When enabled, the handset can be monitored by another handset that have a Call
Supervision PFK.
Call Timer Display
– When disabled prevents the phone from displaying any call duration timers.
Caller ID Display
– When disabled prevents the phone from displaying any caller ID information during calls.
Configuration Menu
– When disabled, this prevents the phone station operator from accessing the station
configuration menu. This is useful for securing phones located in common areas.
DTMF Playout
– When disabled, DTMF digits are not allowed to be sent during an active call.
Intercom Auto Answer
– When disabled, incoming intercom calls must be manually answered like a regular
phone call. Otherwise, intercom calls automatically answer with a live microphone after the alerting tone.
Keypad Dialing
– If not enabled, the keypad cannot be used to initiate or transfer a call. This does not prevent
the keypad from functioning during an active call. It prevents the use of the keypad to initiate any functions
directly with the Allworx
server (for example: dial number, Call Park, etc.).