Motorola MCS 2000 User Manual page 243

Field Definitions
Call ID
Call Text
Enter the four-digit (hexadecimal) MDC CALL ID comprised of
hexadecimal digits "A" through "F" for this member of the call list.
The Call ID is used to target a radio when an individual or group call
has to be sent to that radio or set of radios. The valid range of values is
1 through FFFF.
A Call ID preceded by the hexadecimal digit "E" is interpreted by the
RSS as a Group ID. IDs of the form "Exxx" (where x implies any
hexadecimal digit) should therefore be avoided for Individual/Primary ID
specification. Note also that the digit "F" serves as a wild-card character;
it can be strategically placed in a Call ID to make it match other Call
IDs thus creating the effect of a group ID. The string "FFFF" would for
instance specify all radios in system.
Enter the alphanumeric name for this Call ID. This name will appear
on the radio display to facilitate ease of operation.
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