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Connection
INSYS GPRS 5.1 serial
38
A selection of parameters, adjusted to the
application, for forming TCP packets in the
integrated TCP/IP stack helps prevent un-
necessary high costs for the data transmis-
sion.
The INSYS GPRS 5.1 serial sends a data pack-
et to the remote terminal when:
The maximum set value (default: 512
byte) has been reached
Since the preset waiting time (default:
100 ms) no character has been sent via
the serial interface, and data is already
waiting in the send buffer
(see Chapter 8.8)
AT**TCPBLOCK=
<block-size>
AT**TCPAGG=<agg-time>
5.2.9
Termination
Connections can be terminated as follows:
Manual termination using the
ATH
command in online command mode
By DTR drop (for the setting
AT&D2
)
If the remote terminal hangs up
After switching from data mode to online
mode, the connection will remain estab-
lished. However, data is no longer transmit-
ted to the remote terminal. The online
command mode is also activated by DTR
drop with the setting
AT&D1
, or by activat-
ing the reset input twice within 10 seconds.
Data traffic
<1 Sec.
Pause>
+++
<1 Sec.
Pause>
ATH
The connection was terminated
Ok
5.3
GSM Data Connection (CSD Call)
CSD is the simple modem-like data connection in the GSM network, without using
the GPRS service. Remote terminals for the connection can be analogue modems,
ISDN adapter, or GSM devices.
With the help of HSComm GPRS, the INSYS GPRS 5.1 serial can automatically ac-
cept the CSD call. Click on the tab “Basic settings”.
Содержание GPRS 5.1
Страница 1: ...INSYS GPRS 5 1 serial Manual...
Страница 2: ......
Страница 64: ...Functions INSYS GPRS 5 1 serial 64 Configuration of the first device...
Страница 65: ...INSYS GPRS 5 1 serial Functions 65 Configuration of the second device...
Страница 102: ......