102
Figure C-3 Switched Line Configuration with SOPHO-LAM convertor.
As described in section
3.1.2. Data Terminal Connected to a DLC/DTX (CONVERTORS)
the
SOPHO-LAM convertor configuration for switched lines can NOT be used for both incoming
and outgoing calls (direction of call set-up). The reason for this is that both configurations use
different convertor settings.
The convertor modems in a pool for incoming calls should be configured as follows:
-
Switched line configuration;
-
silent mode (result codes disabled, Hayes command ATQ1);
-
Automatic answering ON (Hayes command ATS0=1);
-
CT107 indicates the state of the analogue connection (according to the V.24 specification,
Hayes command AT&S1);
-
when CT108 changes from ON to OFF the modem must go on hook (Hayes command
V.24
V.24
2B+D
2B+D
IMP
64 kbps
IMP
64 kbps
V.24
DCE
SOPHO-
LAM
DLC/
DTX-I
DLC/
DTX
SN
2
3
4
4
1
1
MODEM
MODEM
PSTN
2B+D,( B=64kbps, user channel.
Special cable (See appendix C)
SOPHO-LAM P375 release 3 in DTE mode (!)
Modulated carrier.
TA = Terminal Adapter
DCE-SOPHO-SET,
SOPHO-LAM or LAM
DTE-A
DTE-B
MODEM - A
MODEM - B
TA-A
TA-B
1
3
2
4
IMP
64 kbps
IMP
64 kbps
ALC
ATU
Trunk line
Summary of Contents for SOPHO Call@Net
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