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Call Control Commands
DIVA T/A ISDN Modem Reference Guide
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Page 40
AT%A 2=n
Protocol Control
. Specifies the protocol you want to use for your ISDN connection.
n=0 HDLC-Transparent mode
n=2 V.120 rate adaption protocol.
n=4 V.110 rate adaption protocol (international version only)
n=95 PPP asynchronous to synchronous conversion (International default).
n=96 Multilink PPP connection (North American default).
Notes:
• Both PPP and Multilink PPP require that a PPP communications stack be installed on
your computer.
• Both the DIVAT/A and the remote device must be set to the same protocol.
• If your workstation is configured as a Windows for Workgroups Remote Access Service
(RAS) client, you must configure the V.120 rate adaption protocol on the DIVA T/A
workstation and the remote device (RAS Server ISDN adapter).
• When using Multilink PPP for incoming calls, only SPAP or PAP authentication are
supported.
• (Windows NT only) In order to support incoming calls with Windows NT RAS Server,
you must enable the parameter “Allow clear text authentication” in the RAS Server
setup. Refer to the RAS online help on how to configure this parameter.
• This parameter is static. Changes do not take effect until you restart your DIVA T/A.
AT%A 4=n
ISDN Communication Speed
. Specifies the ISDN communication speed (56 or 64
Kbps) at which the DIVA T/A will try to connect to the remote station. The speed only
applies to calls initiated by your DIVAT/A.
n=0 Connect at 64 Kbps (default).
n=1 Connect at 56 Kbps.
AT%A95=c
Incoming Data Call Answer
. Sets how incoming data calls are handled (accepted or
rejected).
c=E All incoming data calls can be accepted either by the DIVA T/A (ATS0=1) or by the
application (default).
c=D All incoming data calls are rejected upon receipt.
AT&Zn=v
Store Telephone Number
. Stores a telephone number v in memory location n. Each
number consists of the telephone number (up to 25 characters) and an optional
subaddress (up to 20 characters), separated by a period. Valid characters include the
digits 0 to 9 as well as *, #, space, hyphen, and parenthesis.
Range for n: 0-9, so up to ten telephone numbers may be stored.
Note: The maximum number of dialed digits (that is, the numbers 0-9 and symbols #
and *) is 20 in North America and 40 for International. If you need to dial a number
longer than 25 digits, use the ATDn command (see page 41
).
ATA
Answer Calls
. Instructs the DIVA T/A to accept an incoming call.