Special ISDN Parameters
INSYS ISDN TA 4.0
13
Special ISDN Parameters
You can make additional ISDN settings with this command set.
Only one command is allowed per line; default values are printed bold.
Command
Description
AT**BSIZE
Configures B channel block size
Defines the maximum length x of a received or transmitted data block in
the B channel (default: BSIZE = 2048).
AT**BSIZE
=
x
The value changes with configuring the B channel protocol (
ATB
x).
AT**DBITS
Number of data bits
x at the DTE interface (7,8)
Number of data bits
x for asynchronous characters (7, default:
8
)
AT**DBITS
=
x
AT**DTE
Configures B channel layer 2 address
Configures the layer 2 link address. Only valid for HDLC based protocols
(X.75, LAPB).
AT**DTE=0
Calling party reacts as
DTE,
Calling party reacts as DCE (default, X.75 standard)
AT**DTE
=1
TA reacts as DTE (own address = 01)
AT**DTE
=3
TA reacts as DCE (own address = 03)
The value changes with configuring the B channel protocol (
ATB
x).
AT**K
Configures layer 2 window size
Sets the window size
x of the layer 2 B channel protocol:
x = 1 ..7, de-
fault:
7
AT**K
=
x
The default value depends on the configured B channel protocol.
AT**LLC
Configures layer 2 compatibility (LLC)
Defines the LLC value for outgoing calls in hexadecimal format. Sometimes,
a certain LLC value is required to transfer detailed information about the
used B channel protocol to the called party. This can be achieved by con-
figuring the LLC to a fix value.
AT**LLC=-
Deletes the LLC value (default: LLC is empty).
AT**LLC=8890
Entering a new LLC value
The value changes with configuring the B channel protocol (
ATB
x).
AT**PTP
Configures the ISDN interface type
AT**PTP=0
Configures
Point-to-Multipoint mode (default); for multi-
point interface
AT**PTP=1
Configures Point-to-Point mode (to connect ISDN exchange
systems); for point-to-point interface
AT**RPWD
Password for remote configuration
Sets the password for remote configuration to
nn (1..32 chars). Default: no
password.
AT**RPWD
=
nn
88
