Westermo TD-34 - Manual (Page 57)

57 6610-2203
11. Dialback applications 2
TD-34 #1
2-wire leased line
#1 #4
TD-34 #2 Modem #3
PSTN
Equipment:
2 pcs TD-34, 1 pcs Modem, 2-wire leased line, PSTN simulator, PC with terminal program,
power supplies.
Switch settings:
TD-34 #1 TD-34 #2 Modem #3
SW1 2, 3, 5, 6 ON 2, 3, 5, 6 ON –
SW2 All OFF All OFF –
SW3 5 ON 5, 7 ON –
SW4 3, 5, (8) ON (8) ON –
AT commands: AT*WDB, AT*WSYNC
Application:
Step 1:
Configuration
Set switches on TD-34 #1 and #2
Set switch SW3:5 OFF on TD-34 #1
Power ON TD-34 #1 and Moden #3
Set Modem #3 with 9600, 8N1, auto modulation
AT*WDB=4,1,0 on TD-34 #1
Power OFF TD-34 #1 and Modem #3
Set switch SW3:5 ON on TD-34 #1
Step 2: Dialback
Power ON TD-34 #1, #2 and Modem #3
Wait for DCD on TD-34 #1 and #2
Remove 2-wire leased line on TD-34 #2
Wait for PSTN connection (TD-34 # and Modem #3)