i-modul ISDN HIX V4
Special AT Commands for Voice Functions
Command
Description
ATB
B channel protocol
Transmission protocol for data in B channel.
Note:
In order to use the i-modul ISDN HIX V4 for voice
connections, the B channel protocol must be con-
figured to ATB40 (external IOM) to use the CO-
DEC interface.
ATB0
V.110 asynchronous (e.g.: for connections to
GSM devices)
ATB3
HDLC async to sync conversion (PPP asynchro-
nous, single link PPP) (e.g.: for internet / commu-
nication network access)
ATB4
HDLC transparent (octets are packed in HDLC
frames)
ATB5
Byte-transparent voice (B channel data)
ATB6
Byte-transparent data (B channel data)
ATB10
X.75-NL (e.g.: for direct ISDN-ISDN data connec-
tions)
ATB13 V.120
asynchronous
ATB20
X.31 B channel (X.25 B channel, option)
ATB21
X.31 D channel (option)
ATB31 Multilink
PPP
ATB40 external
IOM
ATB43 external
data
ATB45
external audio data
ATS70
Enable Codec port
This command enables or disables the CODEC of the i-modul
ISDN HIX V4 hardware and changes the structure of the serial
data output (":$" or ":1").
Depending on the setting of the S register S70, the incoming
call signals an IOM call (:$RINGIxDxxxOxxxB0x) or a CODEC
call (:1RINGIxDxxxOxxxB0x).
ATS70=0
Incoming call is indicated as IOM call
Example: :$RINGI1D211O222B01
ATS70=1
Incoming call is indicated as CODEC call and en-
ables the CODEC
Example: :1RINGI1D211O222B01
If the command interface receives an external IOM command (AT:%xxx) or
a Codec command (AT:1xxx), the value for the data structure in this S regis-
ter will be changed automatically.
Table 15: Overview of the AT commands for accepting voice connections
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