SEA 7157 Operator's Manual page 28

DETAILS OF A "CLASS A" CALL
The DATA TC1 selection also has 10 TC2
options to specify the data protocol.
FAX/DAT Facsimile data.
V.21 300 bps duplex modem.
V.22 1200 bps duplex modem.
V.22-bis 2400 bps duplex modems.
V.23 600/1200 bps modems.
V.26-bis 2400/1200 bps modems.
V.26-ter
2400 bps duplex modems using echo
cancellation.
V.27-ter 4800/2400 bps modems.
V.32 Duplex modems up to 9600 bps.
NO-INFO
No additional information.
After the TC2 option is selected, the operator is
prompted to include the position with the call,
switch to another working channel after the call
is transmitted or no other information.
If an individual address has been specified, the
operator must indicate if an ACK is required
from the receiving station.
If Distress Acknowledgment or Distress Relay
has been selected, you will be prompted to enter
the DSC ID of the ship in distress as well as the
position and nature of the distress.
GMDSS CLASS A CALLS
3:01
1
1=FAX/DAT
3=V.22
5=V.23
7=V.26TER
DATA Telecommand 2 options (TC2)
3:01
1
1=V.27TER
3=NO INFO
DATA Telecommand 2 options (TC2)
3:02
1
1=NO OTHER INFO
2=INCLUDE POSITION
3=ALT WORKING CHAN
SELECT 1-3
Final options before transmit
3:02
1
1=REQUEST ACK
2=NO ACK NEEDED
3=SENT ACK
SELECT END 1-3
Specify if ACK is needed for channel change
23
(cont.)
47° 47N 122° 19W
US EXAMP
A
2=V.21
4=V.22BIS
6=V.26
UP=MORE
47° 47N 122° 19W
US EXAMP
A
2=V.32
UP=MORE
47° 47N 122° 19W
A US EXAMP
<1
47° 47N 122° 19W
A US EXAMP
<1