Operator's Manual

OM-E 2072-09689-00
4-18
In addition to individual station addressses, the CCIR addressing plan specifies the following types of
destination addresses (see Table 4-1 and Table 4-2):
• Sub-Group Addresses – addresses ending with a single 0 are directed to a set of stations called
sub-group. When using four-digit addresses, the first three digits of the address determine the
sub-group address, whereas when using six-digit addresses, the first five digits of the address
determine the sub-group address.
For example, a transceiver with self-address 1234 is included in sub-group 1230, and it will
accept all calls with address 1230.
• Group Addresses – addresses ending in two consecutive 0 are directed to a set of stations called
group. When using four-digit addresses, the first two digits of the address determine the group
address, whereas when using six-digit addresses, the first four digits of the address determine the
group address.
For example, a transceiver with self-address 1234 is included in group 1200, and it will accept all
calls with address 1200.
• All Addresses – addresses ending with in three consecutive 0 are called the all address. When
using four-digit addresses, all the stations with the same first digit will accept the all call; when
using six-digit addresses, all the stations with the same three digits will accept the all call.
•
••
• Beacon Address – a beacon call is identified by its last two digits, which are 99.
Figure 4-4 and Figure 4-5 illustrate the concept of groups and sub-groups for the two CCIR addressing
plans. As a result, when assigning self-addresses to an individual station, never select addresses ending
in one or more 0, nor addresses ending in 99. Such addresses are allowed only as destination
addresses.
Table 4-1. Four-Digit CCIR Addressing Plan
Address Type Description
Sub-Group A call transmitted to XXX0 is received by up to 9 transceivers with
individual addresses in the range of XXX1 to XXX9.
Group A call transmitted to XX00 is received by up to 89 transceivers with
individual addresses in the range of XX01 to XX99.
All A call transmitted to X000 is received by up to 890 transceivers with
individual addresses in the range of X001 to X999.
Beacon A call transmitted to XX99 is interpreted as a beacon call
Table 4-2. Six-Digit CCIR Addressing Plan
Address Type Description
Sub-Group A call transmitted to XXXXX0 is received by up to 9 transceivers with
individual addresses in the range of XXXXX1 to XXXXX9.
Group A call transmitted to XXXX00 is received by up to 89 transceivers with
individual addresses in the range of XXXX01 to XXXX99.
All A call transmitted to XXX000 is received by up to 890 transceivers with
individual addresses in the range of XXX001 to XXX999.
Beacon A call transmitted to XXXX99 is interpreted as a beacon call