AT Commands and S-Registers
B-36
Issue 1 April 1994
Call Establishment Rules
Table B-2 shows how connections are made according to the
settings of the originating and answering DataPort 2001
%VS (VoiceSpan Toggle) and S63 (Call Discriminate) options.
Note that the default setting for both is 1. A standard modem
acts as if it had both configuration options set to 0.
Table B-2. Call Establishment Rules
Originator
"
S63=0,
%VS=0
S63=0,
%VS=1
S63=1,
%VS=0
S63=1,
%VS=1
Answerer
S63=0,
%VS=0
V.32 bis
No
Connect
V.32 bis
V.32 bis
S63=0,
%VS=1
No
Connect
VoiceSpan
No
Connect
VoiceSpan
S63=1,
%VS=0
V.32 bis
VoiceSpan
V.32 bis
VoiceSpan
S63=1,
%VS=1
V.32 bis
VoiceSpan
V.32 bis
VoiceSpan