Reference Manual

Table Of Contents
Operating the transceiver from a computer
2110 SSB Transceiver Reference Manual 257
A typical use for the variable expansion feature is as follows:
Sending and receiving calls
When you make calls using CICS commands, you do not need to use the hangup
command when you are making successive calls or using the chan or scan commands.
For example, after sending a Get Position call, CICS enables you to change the channel
then send another Get Position call without using the hangup command to close the
existing link.
Responses and outputs
CICS is an interface from which random outputs will occur, for example, when calls are
received. Additionally, depending on the configuration of the equipment, the order of
responses to commands may change. Software operating on this interface must be able to
adapt to these irregularities to enable correct system behaviour under all conditions. It is
recommended that echo is switched off to avoid intermixing of the commands you enter
with the responses from the system (see page 266, echo command).
Message length in a Message call
The permitted message length when making a Message call depends on the type of call
system, the Privacy Mode selected, and the character set (see page 274, pagecall
command).
Error reporting in a received AMD message
If you receive a call containing a message in which an error has been detected, the
corrupted part of the message will be replaced with tilde characters (~).
Command typed at
initiating station
Information displayed at receiving station
alecall BH "My
position is
$GPS on $DATE
at $TIME"
ALE-LINK: 'Ch 27980', M2, BH,
05/02 02:13, "MY POSITION IS 8958.04N
13841.23E +0.0M 101622 (A) ON THU FEB 05
2004 AT 02:18:16 "
alecall B? +lqa
"My
position is
$GPS"
LQA: 'Ch 27980', M2, 0/29, -/-, 100%
ALE-LINK: 'Ch 27980', M2, B?,
05/02 02:23, "MY POSITION IS 8958.04N
13841.23E +0.0M 101622 (A)"
CAUTION
If a response is not received to a Get Status, Get Position, or Message call
(for example, a page call ack to a Message call) you must use the
hangup, chan, scan or call command to receive subsequent calls.
Control software using these commands must take this into account.