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Chapter 8 – Auto Dial-in Feature 
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A) 
77
 
 
MultiConnect IP Auto Dial-In Setup in Telnet Mode Commands   
 
# set serial auto-telnet enable 
# set serial s0 auto-dialin enable 
# set serial s0 auto-dialin trig-mode dtr-char 
# set serial s0 auto-dialin-ipaddress 202.54.39.96 
# set serial s0 auto-dialin-port 5000 
# set serial s0 auto-dialin-protocol telnet 
 
# 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 
# set serial s1 connect-type modem 
# set serial s1 modem dial-number 123 
 
# set serial s1 modem dialing-trig-mode none 
(Refer to the Chapter 6 Prerequisite Configurations - Physical Link Established over the Modem 
Port for more details) 
 
# set ppp ppp0 ipcp-mode client-only 
# set ppp ppp0 username "MultiConnect" 
# set ppp ppp0 password "MultiConnect" 
# save 
 
 
Once the PPP link is up with an IP address, the auto dial-in session can be probed. When 
detecting either a DTR signal or when any character is received from the serial device connected 
to the RS-232 serial port of MultiConnect IP, the Telnet client on board in the MultiConnect IP 
establishes a Telnet session to 202.54.39.96 on port 23. 
The serial tunnel between the serial device and the Telnet Server terminates in one of the 
following conditions. 
• 
The connection is broken between the serial device and the serial port of the 
MultiConnect IP.  
• 
The Telnet Client on board is terminated. 
• 
The Telnet Server terminates the session.  
 
Notes: 
1. 
You cannot open more than one Dial-in session.  
2. 
The Dial-in session is closed when the configuration session is closed (if opened). 
3. 
When escape-monitor is enabled, care should be taken during file transfer that the escape-
monitor-string
 is not part of the data.