User's Manual Part 1

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Barrett Selective Calling System
General
In addition to the use of the transceiver in simple voice mode to call other stations
there are several different types of Selective Calling systems available.
The calling systems available for the Barrett PRC-2090 transceiver are listed
below:-
International
A four and six digit Selective Call system, fully interoperable with the UN format
published in September 2004 and fully backwards compatible with all previous
Barrett 4 digit Selcall protocols.
Includes Selcall, Beacon Call, Pagecall (SMS) call, transceiver lock call and RFDS
tone calls.
Also if the options are fitted to the transceiver it includes:-
GPS calls, used to either transmit your position to another station or request
the position of another station fitted with the GPS option and receiver.
Telcalls for direct dial telephone number calling using base stations with
telephone interconnect facilities.
Person to person Secure Calls
OEM 1
A four and six digit Selective Call system compatible with other major HF
manufacturers including those using encryption. Includes Selcall, Telcall, Beacon
Call, Pagecall and GPS call.
CCIR
A four digit Selective Call system as specified by CCIR-493.
Includes Selcall, Beacon Call and tone calls.
Also, if the option is fitted to the transceiver, Telcalls for direct dial telephone
number calling using base stations with telephone interconnect facilities.
ALE FED STD 188 / MIL STD 188-141B (option)
MIL-STD Automatic Link Establishment system, see section “Automatic Link
Establishment”