Natel - Wavecom W40PC Manual

ALH(P:42,I1:5461,CH:3,WT:6,M:0,N:4)
Invitation to all mobile units belonging to group 42-5461 (P:42,I1:5461) to transmit. The
message is sent on control channel 3 (CH:3), the TSC responses may be delayed by 6 slots
(WT:6), no subdivision of the radio population is enabled (M:0) and the next frame contains 4
random access timeslots (N:4).
A radio unit calls another unit with the same prefix:
AHY(P:79,I1:760,I2:770,D:0,P:0,CHK:1,E:0,AD:0)
General availability check on the called (D:0) unit 760 (I1:760) sent before allocating a traffic
channel. The TSC is checking if the called unit is ready for a data call (CHK:1). The calling
party 770 (I2:770) is requesting a non-emergency transaction. No data codeword (AD:0) is
appended to this AHY message.
GTC(P:79,I1:760,CH:427,I2:770,N:0)
Calling unit 770 and called unit 760 are directed to proceed with traffic on channel 427
(CH:427). The next frame contains no timeslots (N:0).
A broadcast message:
BCAST(SYSDEF:5,SYS:20265,CH:520,SPARE:0,RSVD:00,ADJ:2)
Option for non-active radio units to determine the signal strength (SYSDEF:5) at the
following time slice on control channel 520 (CH:520) of system 20265 (SYS:20265) having
local serial number 2 (ADJ:2).

NATEL

Parameter
Frequency range
System
Modulation
Receiver settings
Signal source
Selective call systems are an efficient supplement to voice traffic.
The entire call number is transmitted by consecutive tones in decade sequence. When two
identical digits are to be transmitted consecutively, then an eleventh frequency is used as a
repetition identifier. If there more than two identical digits are to be transmitted the repetition
tone is appended to the digit tone (e.g. 22222 is transmitted as f2 fw f2 fw f2, where f2 is the
tone for "2" and fw is the repetition tone).
In most systems the accuracy of the single frequencies has to be within +1/-1.5% of the
nominal value.
Decoding the selective calls is started by clicking on a system. If transmission and system
selection conform, the call sign is displayed on the monitor. In the "Options" menu a "Time
stamp" function can be enabled to add date and time to each call.
Tone Allocation
DIGIT
0
164 • Transmission Modes
Value
VHF/UHF
SELCAL Analog
INDIRECT-FM
FM 12 kHz, narrow
AF (only)
NATEL
1633
WAVECOM Decoders v6.15 W40PC, W41PC, W51PC