Advertisement
Convertor dialling can also be used internally or from DDI (prefix+convertor
type+internal DNR).
A.5.
CV USED FOR PROGRAMMING THE DATA PORT
If the CV is assigned as data then it can be related to a number of parameters which can be
downloaded to a SOPHO-SET, SOPHO-LAM or LAM. The parameters are used for
programming the data port of the SOPHO-SET, SOPHO-LAM or LAM.
The SOPHO-SET, SOPHO-LAM or LAM is connected to a DLC port via a 2B+D line. Each
DLC port comprises 2 circuits which correspond to the user channels in the 2B+D line.
-
For a SOPHO-SET the second user channel (corresponding to an odd DLC-circuit)
corresponds with the data port.
-
For a SOPHO-LAM either user channel (corresponding to the even and odd DLC-circuit)
corresponds with the data port.
-
For a LAM both user channels (corresponding to both the even and odd DLC-circuits)
correspond with the data port.
The DLC-circuit corresponding to a data port is assigned a DNR. A CV is assigned to the DNR
as described above. This CV must be for data and subsequently have the additional interface
parameters.
The parameters are downloaded to the data port in the following circumstances:
-
Manual request with OM-command DOWNLD.
-
If the DLC-circuit is transferred to the service condition INS.
-
Whenever the SOPHO-SET, SOPHO-LAM or LAM is connected to the telephone line.
-
Upon manual request of the user.
-
If the OM-command CHAGCV is used.
Downloading involves sending the parameters of the CV to the SOPHO-SET, SOPHO-LAM
or LAM using the 2B+D protocol. The SOPHO-SET, SOPHO-LAM or LAM interprets the
values and programs the setting of the data port accordingly.
The CV is created or changed using the OM-command CRCVAL or CHCVAL. It is assigned as
either data (D) or voice (V). If the CV is assigned as data then the additional parameters can
be defined. These additional parameters are separated into 4 groups: <V.24-circuits>,
<speed+mode>, <miscellaneous>, <guard 1 + guard 2>.
The parameters and their ranges for the SOPHO-SET 308, SOPHO-SET S375 D, SOPHO-
SET P375 D, SOPHO-SET P370 D, SOPHO-LAM P375 and LAM 308 are not all the same.
63
Advertisement
