88
B.6.
STANDARD SIGNALLING GROUPS
A number of standard signalling groups are available where the projecting bits and byte are
assigned the correct values for specific operation modes. See diagram
.
B.6.1. Modem used as Convertor
When the modem is used in the convertor configuration, the most important bit is bit 0 which
determines if the modem is used as convertor or leased line. There are 4 standard signalling
groups available for the MLU with the connected modem functioning as convertor. These 4
signalling groups are specified with the values for the projecting bits.
•
1604
Modem is used as a pool-modem in the convertor configuration for both incoming and
outgoing calls (STF - CT126 switched). The communication speed is fixed to the low
speed of the modem (DSRS - CT111 fixed off).
•
1606
Modem is used as a pool-modem in the convertor configuration for both incoming and
outgoing calls (STF - CT126 switched). The communication speed is fixed to the high
speed of the modem (DSRS - CT111 fixed on).
•
1608
Modem is used as a pool-modem in the convertor configuration for both incoming and
outgoing calls (STF - CT126 switched). The communication speed is call dependent (DSRS
- CT111 switched). The speed is switched to the high speed if the CV-speed indicates the
communication speed is 1200 bps or higher. The speed is switched to the low speed if the
CV-speed indicates the communication speed is less than 1200 bps.
•
160A
Modem is used as a pool-modem in the convertor configuration for both incoming and
outgoing calls (STF - CT126 switched). The communication speed is call dependent (DSRS
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BYTE 0
0
0
0
0
0
1
0
H`FF'
don't care
don't care don't care don't care don't care
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BYTE 0
0
0
0
1
0
1
0
H`FF'
don't care
don't care don't care don't care don't care
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BYTE 0
0
0
1
0
0
1
0
D`18'
don't care
don't care don't care don't care don't care don't care
Summary of Contents for SOPHO Call@Net
Page 110: ...110 ...