User's Manual

FreeWave Technologies Spread Spectrum Transceiver User Manual

900 MHz and 2.4 GHz

V5.0S

Call Book Selections

(2) Edit Call Book

The Call Book is an innovative feature in FreeWave which offers both security

and flexibility in use. The Call Book accomplishes this by allowing the user to

determine with which other FreeWave Transceivers a given Transceiver will

communicate, based on the serial numbers for both the master and slave. The

transceiver's serial number is encoded in the microprocessor and identified on

the bottom label of the unit. The instructions provided in this section are for point-

to-point mode only. Use of the Call Book for Multipoint systems is explained later

in this chapter.

For two FreeWave Transceivers to communicate in point-to-point mode, three

events must occur:

1. The serial number for the master must be listed in the slave's Call Book.

2. The serial number for the slave must be listed in the master's Call Book (if

slave security is disabled)

3. The master must be programmed to call the slave.

As shown in figure 7, the Call Book allows users to set up a list of up to 10

FreeWave Transceivers with whom they can communicate, designate up to 4

repeaters to be used in communicating with a given transceiver, and tell the

master which slave to call. To direct the master to call a slave the user must be

in the Call Book Menu. A specific slave may be called by entering C at the

prompt, followed by the menu number corresponding to that slave. To call any

available slave in the list the user should enter C and then A (for All).

Note: To call a slave through one or more repeaters you must call that slave

directly (as opposed to using the Call All option). When Call All is selected

the master is not able to connect with any slaves through repeaters. This

is because the master calls every slave in the list when instructed to call

all and will connect with the first slave to respond. When calling through a

repeater, the master must first call that repeater and establish a

communications link with it prior to making contact with the slave.