Advertisement
- CT111 switched). The speed is switched to the high speed if the CV-speed indicates the
communication speed is 2400 bps or higher. The speed is switched to the low speed if the
CV-speed indicates the communication speed is less than 2400 bps.
BIT 0
BIT 1
0
0
don't care
B.6.2. Modem used as Leased Line
When the modem is used in the leased line configuration, the most important bit is bit 0 which
determines if the modem is used as convertor or leased line. There are 14 standard signalling
groups available for the MLU with the connected modem functioning as trunk (leased) line. In
the next part of this paragraph, the 14 signalling groups are specified together with the values
for the projecting bits and byte.
• 160C
Modem is used as a pool-modem in the leased line configuration for outgoing calls only:
the MLU expects a constant carrier on the line but without guarding the line.
When transmitting, the modem uses the low band (STF - CT126 off).
The communication speed is fixed to low speed (DSRS - CT111 off).
BIT 0
BIT 1
1
1
• 160E
Modem is used as a pool-modem in the leased line configuration for outgoing calls only:
the MLU expects a constant carrier on the line and guards the line.
When transmitting, the modem uses the low band (STF - CT126 off).
The communication speed is fixed to low speed (DSRS - CT111 off).
BIT 0
BIT 1
1
1
• 1610
Modem is used as a pool-modem in the leased line configuration for outgoing calls only:
the MLU expects a constant carrier on the line but without guarding the line.
When transmitting, the modem uses the low band (STF - CT126 off).
The communication speed is fixed to high speed (DSRS - CT111 on).
BIT 2
BIT 3
1
0
don't care don't care don't care don't care don't care
BIT 2
BIT 3
0
0
don't care
BIT 2
BIT 3
0
0
don't care
BIT 4
BIT 5
0
1
BIT 4
BIT 5
0
0
BIT 4
BIT 5
1
0
BIT 6
BYTE 0
0
D`19'
BIT 6
BYTE 0
0
H`FF'
don't care
BIT 6
BYTE 0
0
H`FF'
don't care
89
Advertisement
