User's Manual

NETS

OVERVIEW OF NETS

166 ENVOY™ TRANSCEIVER REFERENCE MANUAL

Overview of NETs

NOTE: NET calling is available if the MIL-STD-188-141B ALE option is

installed.

A NET is a special ALE addressing capability. With NET addressing, two or more

stations are pre-configured to respond to the same NET address. When a station calls

a NET, all stations with that NET address and their self addresses in the NET

Members entry for the NET, respond in their designated response slot. In the

Envoy™ Transceiver, a NET contains the configuration information required for

making and receiving NET calls. This information defines the process for the

handshake during link establishment.

The full 3-way handshake process involves a leading call from the calling station, a

response from the called station, and an acknowledgement from the calling station.

Following the acknowledgement, all stations that are able to, enter the link.

A station can have a NET programmed in its NET menu and either:

• be a member of the NET, that is, their self address is in the NET Members

entry for the NET

• not be a member of the NET, that is, their self address is not in the NET

Members entry for the NET

NETs are used with an ALE/CALM HF network, which is associated with a scan table

that defines the channels that the NET may use when establishing an ALE link, and

the privacy mode for messaging within a call.

You can make a call to a NET by selecting the NET, Emergency, Message, Phone,

Selective, or Send Position call type and entering the NET address. You can set up a

contact to make a NET call.

Figure 46 shows an example of the information required to add a NET.

Figure 46: Information for a NET