Wavecom W61PC V7.5.0 User Manual
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Transmission Modes
WAVECOM Decoder W61PC/LAN Manual V7.5
Parameter hex
Value ZVEI (first data word)
Value VDEW (following data words)
0
User defined
Not used
1
Call to mobile
Call to mobile
2
Call to base station
Direct Access
3
Identification
Identification
4
Acknowledgement
Acknowledgement
5
Spare (indicate VDEW)
Sequence telegram
6
Separation call
Separation call
7
Spare
Recall
8
Priority call
Emergency call
9
Status request
Status request/response
A
Spare
Position request
B
Acknowledgement
Acknowledgement
C
Spare
Quick dialing
D
User defined
Data
E
User defined
Spare
F
Emergency call
Not used
Status for ZVEI and VDEW (STAT:)
Four bits are available. In the VDEW system these four bits indicate the number of follow-up telegrams.
The last follow-up telegram and a basic telegram without follow-up telegrams are indicated by 0xA. In
ZVEI the status bits can be used by the carrier.
Rhombic labeling (RAUTE:)
Four bits are used as additional distinction for a producer designation. The use is not determined.
Manufacturer identification (Herst:)
Two digits are used. The classification is determined by ZVEI.
In the newer VDEW system the rhombic labeling and the manufacturer identification are combined into
one field of three digits, called EVU number (EVU#:).
Call number ZVEI and VDEW (Ruf#:)
Three digits are used. The hundred-position digit is transmitted first, the one-position digit last. Group
calls are transmitted as pseudo-tetrads of '1111' (16). For a group call in the 10s range the digit repre-
senting 1s is filled with logical ‘1’. For a group call in the 100s range, the 1s and 10s digit are filled with
logical ‘1’, and for a 1000s range call all 12 bits are filled with logical ‘1’.
EVU and call number are transferred in a block of six digits. The partitioning is either 3 digits for either
items or 2 EVU digits plus 4 call number digits. The chosen variant cannot be derived from the data, so
both versions are displayed.
The following picture shows a trace of a VDEW transmission with basic telegram and a single follow-up
telegram, displaying both versions of partitioning, i.e. 3 + 3 as well as 2 + 4.