ISDN Data and Telephony Protocol Engine (inc. X.25)
CMX228
1.5.6.2 Hayes Register Set
In addition to the commands, there are a group of registers for which data is entered in the following
format: AT{register}={value}<CR>. The following Hayes registers are supported:
S0
S37
- Number of rings on which to auto-answer
- Maximum rate adaption speed
- B/D-channel protocol
- X.25 receive window size
- X.25 transmit window size
- X.25 receive packet size
- X.25 transmit packet size
- X.25 NUI
%A2
%B0
%B1
%B2
%B3
%B13
%B18
%D0
%D1
%D2
%D3
%D9
%D10
%E8
%L3
%L4
%L10
!B1
- X.25 user data
- X.25 default receive window size
- X.25 default transmit window size
- X.25 default receive packet size
- X.25 default transmit packet size
- X.25 group number
- X.25 channel number
- V.120 MFO mode selection
- PAD forwarding character
- PAD idle timer
- PAD line folding
- LAPB T1 timer
!B2
- LAPB T4 timer
!B3
- LAPB N2 retry count
!B5
!C4
!C5
!C6
- X.25 LAPB active/passive
- B1-channel configuration
- B2-channel configuration
- Multiple Subscriber Numbering
- TEI selection
!C7
!C8
- ISDN Line Failure Detection enable/disable
The following is a more detailed description of the Hayes registers listed above:
S0 (Rings on Which to Auto-answer a Data Call)
Range
0 to 255
Default
0
Description
If set to 0 auto-answering will be disabled.
Any other value will cause one ‘RING’ result code to
be sent to the DTE after which the call is answered.
S37 (Maximum Rate Adaption Speed)
This forces the baud rate when handling incoming calls, to that defined by the S37 register contents,
provided auto-answer is set. Once a call is terminated the baud rate remains that set by the S37
register.
Value
0 (default)
9
Rate (baud)
Same as last AT speed
9600
12
13
18
31
19200
38400
57600
115200
ã 1999 Consumer Microcircuits Limited
ã 1999 Chiron Technology Limited
22
D/228/1
CMLMICRO [ CML MICROCIRCUITS ]
