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Chapter 9 – Modem (Transparent) Mode
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A) 84
Commands for MultiConnect IP - 1 (Dialing End)
# set operation-mode modem
# set serial s0 escape-monitor enable
# set serial s0 escape-string "+++inets0"
# set serial s0 stop-bits 1
# set serial s0 baud-rate 115200
# set serial s0 data-bits 8
# set serial s0 parity none
# set serial s0 flow-control rts-cts
# set serial s1 stop-bits 1
# set serial s1 baud-rate 115200
# set serial s1 data-bits 8
# set serial s1 parity none
# set serial s1 flow-control rts-cts
# save
Commands for MultiConnect IP - 2 (Answering End)
# set operation-mode modem
# set serial s0 escape-monitor enable
# set serial s0 escape-string "+++inets0"
# set serial s0 baud-rate 115200
# set serial s0 data-bits 8
# set serial s0 parity none
# set serial s0 stop-bits 1
# set serial s0 flow-control rts-cts
# set serial s1 baud-rate 115200
# set serial s1 data-bits 8
# set serial s1 parity none
# set serial s1 stop-bits 1
# set serial s1 flow-control rts-cts
# save
Steps for Establishing a Physical Link in Transparent Mode
1. Complete the configuration listed above.
2. At the dialing end, invoke the following commands:
atz
at&f
atdt <dial no>
3. Once the physical connection is up, the data channel between the two MultiConnect IP
modules is established.
Note: Only raw data is forwarded between the MultiConnect IP modules, and no data
integrity check is provided.
4. Type +++ followed by ATH0 to hangup the modem.
Notes
• You can switch from Data mode to Command mode using the escape-monitor-string
command. The Command mode transfers control to the Command Shell of MultiConnect IP.
• You can switch from Command mode to Data mode using the restore session command.
• The data session is dropped if the physical link goes down.