XM1240S AT Commands Reference Manual
No. XM1240S-A00-106
xmodus swiss GmbH
20 / 46
3.7 ISDN CONFIGURATION COMMANDS
3.7.1 AT**BSIZE Selects B-Channel Packet Size
This command selects the maximum length of a data block in the X.31 and/or V.120
B-Channel protocols. This parameter will be changed by the setting of other B-
Channel protocols (ATBn).
AT**BSIZE=64
Selects a block length of 64 bytes
AT**BSIZE=128
Selects a block length of 128 bytes
AT**BSIZE=256
Selects a block length of 256 bytes
(default)
AT**BSIZE=512
Selects a block length of 512 bytes
AT**BSIZE=1024
Selects a block length of 1014 bytes
AT**BSIZE=2048
Selects a block length of 2048 bytes
3.7.2 AT**DTE
Selects B-Channel Layer 2 Address
This command selects the Layer 2 link address used for X.25-B protocol. . This
parameter will be changed by the setting of other B-Channel protocols (ATBn).
AT**DTE=0
Calling side = DTE; Called side = DCE
AT**DTE=1
Reacts as DTE (address = 01) (default)
AT**DTE=3
Reacts as DCE (address = 03)
3.7.3 AT**K
X.75 / V.120 Window Size
The isdn-modem will operate an X.75 or V.120 error corrected link using a window
size controlled by the parameter supplied. A window size from 1 – 7 can be supplied.
The value of 1 is chosen for compatibility with other products. A value of 2 – 7 should
be chosen for best performance (default = 7).
AT**K=n
n = 1 – 7 , default = 7
All manuals and user guides at all-guides.com
