| Text
Messaging |
Text
messages may be sent to any unit with a means of displaying
them. The display on units so equipped is scrollable to
read messages of length exceeding that which can be displayed. |
| Time-out
Timer |
All
units are normally programmed with a software-defined
(default is 30 seconds) transmission timeout timer since
long transmissions are often caused by inadvertant mechanical
activation. A warning tone is normally sent to alert the
operator of the occurrence of this function. These features
can be modified by the system manager. |
| Virtual
ID Token Passing Protocol |
In
order to simplify the practical implementation of IP addressed
routing for every member of a DV/IP network, a token passing
protocol is used on air to truncate long IP addresses
when there are multiple members to a talkgroup. |
| Voice
Bank |
The
system can store up to 128 broadcast messages such as
weather reports, status reports, etc. which can be updated
easily and accessed individually by field units with simple
keypad commands. Permitted units can create and retrieve
Voice Bank messages. Voice bank messages can also be automatically
created, such as interval-based recording of weather reports,
traffic reports, etc. |
| Zero
Access Trunking |
Regardless
of activity on the registered cell, initialization of
a group or private call from a mobile, portable or control
station is accompanied by no access delay. Digitization
of the voice begins immediately as the radio requests
a channel assignment and any queuing and subsequent channel
access and message transmission is automatic. |
