Insys ISDN Terminal Adapter 4.0 11-02-01-02-00.015 Manuale Utente
Codici prodotto
11-02-01-02-00.015
30
Operating Manual INSYS ISDN TA 4.0
Version 2.02 – 01.04
acctab1 1234567890
accepts only specified number
acctab2 *456*
accepts all numbers with 456 somewhere in the middle
acctab3 ? 2345678 ??
accepts all numbers with 2345678 in the middle preceeded by one digit
and followed by two digits.
and followed by two digits.
acctab2 *1234/987
accepts all numbers that end with 1234 and have the subaddress 987
acctab3 *
accepts all incoming calls without subaddress
acctab3-
deletes entry no. 3
Note:
If you are not sure, which format the incoming call has, use the command
ATV2
ATV2
to display the format of the calling number in the RING message.
This number can be taken over into the acctab list.
6.5 Data Flow Control
There are two possibilities of flow control between PC and INSYS ISDN TA.
6.5.1 Hardware Handshake (RTS/CTS)
The two control lines RTS and CTS of the serial interface are used to control the data flow
here. As soon as the buffer of the INSYS ISDN TA is full, the INSYS ISDN TA resets the CTS
line to indicate that no more data can be accepted from the PC.
If the internal data buffer of the INSYS ISDN TA is processed, it sets the CTS line back to
ON, thereby informing the PC, that it is again ready to receive data.
The control line RTS is used by the PC. A set RTS line (state ON) indicates the INSYS ISDN
TA that it can request data from the PC.
The hardware controlled data flow control is set in the INSYS ISDN TA with the com-
mands AT&K and AT&R.
here. As soon as the buffer of the INSYS ISDN TA is full, the INSYS ISDN TA resets the CTS
line to indicate that no more data can be accepted from the PC.
If the internal data buffer of the INSYS ISDN TA is processed, it sets the CTS line back to
ON, thereby informing the PC, that it is again ready to receive data.
The control line RTS is used by the PC. A set RTS line (state ON) indicates the INSYS ISDN
TA that it can request data from the PC.
The hardware controlled data flow control is set in the INSYS ISDN TA with the com-
mands AT&K and AT&R.
It depends on the respective software, which runs on the PC, whether the RTS/CTS lines
are served.
are served.
6.5.2 Software Handshake (XON/XOFF)
Both ASCII control characters XON (CHR(19)) and XOFF (CHR(17)) are used to control the
data flow.
If the input buffer of the INSYS ISDN TA has exceeded a predetermined XOFF fill level, the
INSYS ISDN TA inserts an XOFF character into the data stream to the PC. This character
causes the PC to stop sending further data.
Once the INSYS ISDN TA has processed the input buffer so far that it falls below a prede-
termined XON fill level, the INSYS ISDN TA includes the XON character in the data
stream. This character causes the PC to start sending data again to the INSYS ISDN TA. In
a similar manner, the PC can control the data flow from the INSYS ISDN TA to the PC.
The XON/XOFF procedure is only possible, if the XON or XOFF characters are not present
in the data to be transmitted, so as a rule only for ASCII texts. When transmitting pro-
data flow.
If the input buffer of the INSYS ISDN TA has exceeded a predetermined XOFF fill level, the
INSYS ISDN TA inserts an XOFF character into the data stream to the PC. This character
causes the PC to stop sending further data.
Once the INSYS ISDN TA has processed the input buffer so far that it falls below a prede-
termined XON fill level, the INSYS ISDN TA includes the XON character in the data
stream. This character causes the PC to start sending data again to the INSYS ISDN TA. In
a similar manner, the PC can control the data flow from the INSYS ISDN TA to the PC.
The XON/XOFF procedure is only possible, if the XON or XOFF characters are not present
in the data to be transmitted, so as a rule only for ASCII texts. When transmitting pro-